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Physics

University of Nebraska - Lincoln

2006

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Exchange Bias Training Effect In Coupled All Ferromagnetic Bilayer Structures, Christian Binek, Srinivas Polisetty, Xi He, A. Berger Feb 2006

Exchange Bias Training Effect In Coupled All Ferromagnetic Bilayer Structures, Christian Binek, Srinivas Polisetty, Xi He, A. Berger

Department of Physics and Astronomy: Faculty Publications

Exchange coupled bilayers of soft and hard ferromagnetic thin films show remarkable analogies to conventional antiferromagnetic/ferromagnetic exchange bias heterostructures. Not only do all these ferromagnetic bilayers exhibit a tunable exchange bias effect, they also show a distinct training behavior upon cycling the soft layer through consecutive hysteresis loops. In contrast with conventional exchange bias systems, such all ferromagnetic bilayer structures allow the observation of training induced changes in the bias-setting hardmagnetic layer by means of simple magnetometry. Our experiments show unambiguously that the exchange bias training effect is driven by deviations from equilibrium in the pinning layer. A comparison of …

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Search For Charged Higgs Bosons From Top Quark Decays In Pp̅ Collisions At √S = 1:96 Tev, A. Abulencia, Kenneth A. Bloom, Cdf Collaboration Feb 2006

Search For Charged Higgs Bosons From Top Quark Decays In Pp̅ Collisions At √S = 1:96 Tev, A. Abulencia, Kenneth A. Bloom, Cdf Collaboration

Kenneth Bloom Publications

We report the results of a search for a charged Higgs boson in the decays of top quarks produced in pp̅ collisions at a center-of-mass energy of 1.96 TeV. We use a data sample corresponding to an integrated luminosity of 193 pb-1 collected by the upgraded Collider Detector at Fermilab. No evidence for charged Higgs production is found, allowing 95% C.L. upper limits to be placed on BR(t→ H+b) for different charged Higgs decay scenarios. In addition, we present in the minimal supersymmetric standard model (mH±, tan β) plane the …

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Precision Top-Quark Mass Measurement In The Lepton+Jets Topology In Pp̅ Collisions At √S =1.96 Tev, A. Abulencia, Kenneth A. Bloom, Cdf Collaboration Jan 2006

Precision Top-Quark Mass Measurement In The Lepton+Jets Topology In Pp̅ Collisions At √S =1.96 Tev, A. Abulencia, Kenneth A. Bloom, Cdf Collaboration

Kenneth Bloom Publications

We report two measurements of the top-quark mass Mtop using the CDF II detector at the Fermilab Tevatron in a 318 pb-1 data sample of tt̅ events in the lepton + jets final state. One method uses an event-based likelihood technique resulting inMtop = 173.2-2.4+2.6(stat) ± 3.2(syst) GeV/c2 or 173.2-4.0+4.1GeV/c2. The second method reconstructs a top-quark mass in each event using the measured invariant mass of the hadronically decaying W boson to constrain the jet energy scale to obtain a value forMtop of …

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Search For Neutral Higgs Bosons Of The Minimal Supersymmetric Standard Model Decaying To Τ Pairs In Pp̅ Collisions At √S = 1:96 Tev, A. Abulencia, Kenneth A. Bloom, Cdf Collaboration Jan 2006

Search For Neutral Higgs Bosons Of The Minimal Supersymmetric Standard Model Decaying To Τ Pairs In Pp̅ Collisions At √S = 1:96 Tev, A. Abulencia, Kenneth A. Bloom, Cdf Collaboration

Kenneth Bloom Publications

We present a search for neutral supersymmetric Higgs bosons decaying to τ pairs produced in pp̅ collisions at √s =1:96 TeV. The data, corresponding to 310 pb-1 integrated luminosity, were collected with the Collider Detector at Fermilab in run II of the Tevatron. No significant excess above the standard model backgrounds is observed. We set exclusion limits on the production cross section times branching fraction to τ pairs for Higgs boson masses in the range from 90 to 250 GeV/c2.

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Structure Of Sc2O3 Films Epitaxially Grown On Α -Al2O3 (0001), A.R. Kortan, N. Kopylov, J. Kwo, M. Hong, C.P. Chen, J.P. Mannaerts, Sy_Hwang Liou Jan 2006

Structure Of Sc2O3 Films Epitaxially Grown On Α -Al2O3 (0001), A.R. Kortan, N. Kopylov, J. Kwo, M. Hong, C.P. Chen, J.P. Mannaerts, Sy_Hwang Liou

Sy-Hwang Liou Publications

The crystal structure of scandium oxide films epitaxially grown on α -Al2O3 (0001) under an ultrahigh-vacuum is studied by single-crystal x-ray diffraction. The Sc2O3 film grows in bixbyite phase on the basal (0001) surface of the sapphire substrate with its (111) axis aligned parallel to the substrate normal. In-plane orientation of the film, however, exhibits two distinct growth directions that are defined by the two possible surface orientations of the stepped α -Al2O3 substrate. The atomic structure of the high-quality epitaxial film is fully relaxed and the film has unusual thickness …

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Electronic Structure And Vibrational Spectra Of C2B10-Based Clusters And Films, Kyungwha Park, M. R. Pederson, L. L. Boyer, Wai-Ning Mei, Renat F. Sabirianov, Xiao Cheng Zeng, Satya S. Bulusu, Seamus Curran, James Dewald, Ellen Day, Shireen Adenwalla, Manuel Diaz, Luis G. Rosa, Snjezana Balaz, Peter A. Dowben Jan 2006

Electronic Structure And Vibrational Spectra Of C2B10-Based Clusters And Films, Kyungwha Park, M. R. Pederson, L. L. Boyer, Wai-Ning Mei, Renat F. Sabirianov, Xiao Cheng Zeng, Satya S. Bulusu, Seamus Curran, James Dewald, Ellen Day, Shireen Adenwalla, Manuel Diaz, Luis G. Rosa, Snjezana Balaz, Peter A. Dowben

Department of Physics and Astronomy: Faculty Publications

The electronic structure, total energy, and vibrational properties of C2B10H12 (carborane)molecules and C2B10 clusters formed when the hydrogen atoms are removed from carborane molecules are studied using density functional methods and a semiempirical model. Computed vibrational spectra for carborane molecules are shown to be in close agreement with previously published measured spectra taken on carborane solids. Semiconducting boron carbide films are prepared by removing hydrogen from the three polytypes of C2B10H12 deposited on various surfaces. Results from x-ray and Raman scattering measurements on these films are reported. …

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Search For W And Z Bosons In The Reaction P̅P → Two Jets + Γ At √S = 1.8 Tev, Darin Acosta, Kenneth A. Bloom, Cdf Collaboration Jan 2006

Search For W And Z Bosons In The Reaction P̅P → Two Jets + Γ At √S = 1.8 Tev, Darin Acosta, Kenneth A. Bloom, Cdf Collaboration

Kenneth Bloom Publications

We present a study of the dijet invariant mass distribution for the reaction p̅p → two jets + γ + X, at a center of mass energy of 1.8 TeV, using data collected by the CDF experiment. We compare the data to predictions for the production of a photon with two jets, together with the resonant processes p̅p → W/Z + γ +X, in which the W and Z bosons decay hadronically. A fit is made to the dijet invariant mass distribution combining the nonresonant background and resonant processes. We use the result to establish …

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Effect Of Electric Field Doping On The Anisotropic Magnetoresistance In Doped Manganites, X. Hong, J. -B. Yau, J. D. Hoffman, C. H. Ahn Jan 2006

Effect Of Electric Field Doping On The Anisotropic Magnetoresistance In Doped Manganites, X. Hong, J. -B. Yau, J. D. Hoffman, C. H. Ahn

Xia Hong Publications

We have modulated the anisotropic magnetoresistance (AMR) in 3–4 nm manganite films using the ferroelectric field effect—a method that electrostatically varies the carrier density without affecting the lattice distortion. While significant changes have been induced in TC and p, the AMR ratio remains the same when the magnetic state is not changed. This scaling behavior is in striking contrast to chemical doping results, where similar modulation of the carrier concentration (~0.1/Mn) changes the AMR ratio by ≥30%. The results reveal unambiguously the dominant role of chemical distortion in determining the AMR in manganites.

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Kenneth Bloom: Publications List Through January 2006 Jan 2006

Kenneth Bloom: Publications List Through January 2006

Kenneth Bloom Publications

Lists 280 publications from arXiv, Physical Review Letters, Physical Review D, Physics Letters B, and IEEE Transactions on Nuclear Science. Includes works in press as of January 2006.

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Cluster-Assembled Nanocomposites, Yinfan Xu, M.L. Yan, David J. Sellmyer Jan 2006

Cluster-Assembled Nanocomposites, Yinfan Xu, M.L. Yan, David J. Sellmyer

David Sellmyer Publications

This chapter focuses on a gas-aggregation technique to prepare magnetic nanoclusters with controllable cluster sizes and size distributions. The review includes current research on nanoclusters, such as uncoated and oxide-coated Fe, Co and Fe clusters and clusters made from alloys, but special emphasis is on highly anisotropic L10-ordered FePt clusters, which are of potential interest for magnetic recording with ultrahigh areal densities of more than 1 Tera bit/in2. In particular, we discuss magnetic and structural properties of FePt nanoclusters and thin films. Another approach discussed in the chapter is to create cluster nanocomposites by multilayering …

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Search For R-Parity Violating Supersymmetry Via The Llē Couplings Λ121, Λ122 Or Λ133 In Pp Collisions At √ S = 1.96 Tev, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, Do Collaboration Jan 2006

Search For R-Parity Violating Supersymmetry Via The Llē Couplings Λ121, Λ122 Or Λ133 In Pp Collisions At √ S = 1.96 Tev, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, Do Collaboration

Kenneth Bloom Publications

A search for gaugino pair production with a trilepton signature in the framework of R-parity violating supersymmetry via the couplings λ121, λ122, or λ133 is presented. The data, corresponding to an integrated luminosity of L ≈ 360 pb−1, were collected from April 2002 to August 2004 with the D∅ detector at the Fermilab Tevatron Collider, at a center-of-mass energy of √s = 1.96 TeV. This analysis considers final states with three charged leptons with the flavor combinations eel, μμl, and eeτ (l = e or μ). No evidence for supersymmetry is …

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Exact Analytical Solution For The Vector Electromagnetic Field Of Gaussian, Flattened Gaussian, And Annular Gaussian Laser Modes, Scott M. Sepke, Donald Umstadter Jan 2006

Exact Analytical Solution For The Vector Electromagnetic Field Of Gaussian, Flattened Gaussian, And Annular Gaussian Laser Modes, Scott M. Sepke, Donald Umstadter

Donald Umstadter Publications

The exact vector integral solution for all the electromagnetic field components of a general flattened Gaussian laser mode is derived by using the angular spectrum method. This solution includes the pure and annular Gaussian modes as special cases. The integrals are of the form of Gegenbauer’s finite integral and are computed analytically for each case, yielding fields satisfying the Maxwell equations exactly in the form of quickly converging Fourier–Gegenbauer series.

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Piezoresponse Force Microscopy And Recent, Alexei Gruverman, Sergei V. Kalinin Jan 2006

Piezoresponse Force Microscopy And Recent, Alexei Gruverman, Sergei V. Kalinin

Alexei Gruverman Publications

In this paper, we review recent advances in piezoresponse force microscopy (PFM) with respect to nanoscale ferroelectric research, summarize the basic principles of PFM, illustrate what information can be obtained from PFM experiments and delineate the limitations of PFM signal interpretation relevant to quantitative imaging of a broad range of piezoelectrically active materials. Particular attention is given to orientational PFM imaging and data interpretation as well as to electromechanics and kinetics of nanoscale ferroelectric switching in PFM.

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Search For Scalar Leptoquarks In The Acoplanar Jet Topology In Pp Collisions At √ S = 1.96 Tev, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration Jan 2006

Search For Scalar Leptoquarks In The Acoplanar Jet Topology In Pp Collisions At √ S = 1.96 Tev, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration

Kenneth Bloom Publications

A search for leptoquarks has been performed in 310 pb−1 of data from pp collisions at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron Collider. The topology analyzed consists of acoplanar jets with missing transverse energy. The data show good agreement with standard model expectations, and a lower mass limit of 136 GeV has been set at the 95% C.L. for a scalar leptoquark decaying exclusively into a quark and a neutrino.

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Ferromagnetism And Structure Of Epitaxial Cr-Doped Anatase Tio2 Thin Films, T. C. Kaspar, T. Droubay, V. Shutthanandan, S. M. Heald, C. M. Wang, D. E. Mccready, S. Thevuthasan, J. D. Bryan, D. R. Gamelin, A. J. Kellock, M. F. Toney, X. Hong, C. H. Ahn, S. A. Chambers Jan 2006

Ferromagnetism And Structure Of Epitaxial Cr-Doped Anatase Tio2 Thin Films, T. C. Kaspar, T. Droubay, V. Shutthanandan, S. M. Heald, C. M. Wang, D. E. Mccready, S. Thevuthasan, J. D. Bryan, D. R. Gamelin, A. J. Kellock, M. F. Toney, X. Hong, C. H. Ahn, S. A. Chambers

Xia Hong Publications

The materials and magnetic properties of Cr-doped anatase TiO2 thin films deposited on LaAlO3(001) and SrTiO3(001) substrates by oxygen-plasma-assisted molecular beam epitaxy have been studied in detail to elucidate the origin of ferromagnetic ordering. Cr substitution for Ti in the anatase lattice, with no evidence of Cr interstitials, segregation, or secondary phases, was independently confirmed by transmission electron microscopy with energy dispersive x-ray spectroscopy, extended x-ray absorption fine structure, and Rutherford backscattering spectrometry in the channeling geometry. Epitaxial films deposited at ~0.1 Å/ s were found to have a highly defected crystalline structure, as quantified …

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Planar Hall-Effect Magnetic Random Access Memory, Y. Bason, L. Klein, J. -B. Yau, X. Hong, J. Hoffman, C. H. Ahn Jan 2006

Planar Hall-Effect Magnetic Random Access Memory, Y. Bason, L. Klein, J. -B. Yau, X. Hong, J. Hoffman, C. H. Ahn

Xia Hong Publications

We suggest a type of magnetic random access memory (MRAM) that is based on the phenomenon of the planar Hall effect (PHE) in magnetic films, and we demonstrate this idea with manganite films. The PHE-MRAM is structurally simpler than the currently developed MRAM that is based on magnetoresistance tunnel junctions, with the tunnel junction structure being replaced by a single-layer film.

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Electromechanical Imaging Of Biomaterials By Scanning Probe Microscopy, B. J. Rodriguez, Sergei V. Kalinin, J. Shin, Stephen Jesse, V. Grichko, T. Thundat, Arthur P. Baddorf, Alexei Gruverman Jan 2006

Electromechanical Imaging Of Biomaterials By Scanning Probe Microscopy, B. J. Rodriguez, Sergei V. Kalinin, J. Shin, Stephen Jesse, V. Grichko, T. Thundat, Arthur P. Baddorf, Alexei Gruverman

Alexei Gruverman Publications

The majority of calcified and connective tissues possess complex hierarchical structure spanning the length scales from nanometers to millimeters. Understanding the biological functionality of these materials requires reliable methods for structural imaging on the nanoscale. Here, we demonstrate an approach for electromechanical imaging of the structure of biological samples on the length scales from tens of microns to nanometers using piezoresponse force microscopy (PFM), which utilizes the intrinsic piezoelectricity of biopolymers such as proteins and polysaccharides as the basis for high-resolution imaging. Nanostructural imaging of a variety of protein-based materials, including tooth, antler, and cartilage, is demonstrated. Visualization of protein …

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Bioelectromechanical Imaging By Scanning Probe Microscopy: Galvani’S Experiment At The Nanoscale, Sergei V. Kalinin, B. J. Rodriguez, J. Shin, Stephen Jesse, V. Grichko, T. Thundat, Arthur P. Baddorf, Alexei Gruverman Jan 2006

Bioelectromechanical Imaging By Scanning Probe Microscopy: Galvani’S Experiment At The Nanoscale, Sergei V. Kalinin, B. J. Rodriguez, J. Shin, Stephen Jesse, V. Grichko, T. Thundat, Arthur P. Baddorf, Alexei Gruverman

Alexei Gruverman Publications

Since the discovery in the late 18th century of electrically induced mechanical response in muscle tissue, coupling between electrical and mechanical phenomena has been shown to be a near-universal feature of biological systems. Here, we employ scanning probe microscopy (SPM) to measure the sub-Angstrom mechanical response of a biological system induced by an electric bias applied to a conductive SPM tip. Visualization of the spiral shape and orientation of protein fibrils with 5 nm spatial resolution in a human tooth and chitin molecular bundle orientation in a butterfly wing is demonstrated. In particular, the applicability of SPM-based techniques for the …

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Structure And Magnetism Of Atomically Thin Fe Layers On Flat And Vicinal Pt Surfaces, D. Repetto, T. Y. Lee, S. Rusponi, Jan Honolka, K. Kuhnke, Violetta Sessi, Ulrich Starke, H. Brune, P. Gambardella, C. Carbone, Axel Enders, K. Kern Jan 2006

Structure And Magnetism Of Atomically Thin Fe Layers On Flat And Vicinal Pt Surfaces, D. Repetto, T. Y. Lee, S. Rusponi, Jan Honolka, K. Kuhnke, Violetta Sessi, Ulrich Starke, H. Brune, P. Gambardella, C. Carbone, Axel Enders, K. Kern

Axel Enders Publications

Ultrathin Fe films on Pt substrates have been investigated under ultrahigh vacuum conditions by scanning tunneling microscopy, low energy electron diffraction, magneto-optical Kerr effect, x-ray magnetic circular dichroism measurements, and Kerr microscopy. We present a comparison between Fe films on flat Pt(111) and stepped Pt(997), with particular focus on the magnetic anisotropy in the submonolayer thickness range below 0.2 monolayer coverage, and above the spin reorientation transition at 3 monolayer thickness. The comparison of structure and magnetism suggests that the perpendicular easy axis found for films thinner than three monolayers is due to dominating contributions from both film interfaces to …

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Magnetism Of Fe Clusters And Islands On Pt Surfaces, D. Repetto, Jan Honolka, S. Rusponi, H. Brune, Axel Enders, Klaus Kern Jan 2006

Magnetism Of Fe Clusters And Islands On Pt Surfaces, D. Repetto, Jan Honolka, S. Rusponi, H. Brune, Axel Enders, Klaus Kern

Axel Enders Publications

Clusters and islands of Fe atoms have been prepared by noble gas buffer layer assisted growth as well as by standard molecular beam epitaxy on Pt substrates. Xe buffer layers have been utilized to promote the formation of compact, relaxed Fe clusters with narrow size distribution. Without the Xe buffer, strained Fe islands with a characteristic misfit dislocation network are formed. Magnetization loops obtained by magneto-optical Kerr effect measurements reveal that in-plane easy magnetization axis is only found for the relaxed clusters, pointing out the important role of epitaxial lattice deformations for the magnetic anisotropy.

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Angular Momentum Partitioning In The Dissociation Of Diatomic Molecules, Timothy J. Gay, J. D. Bozek, J. E. Furst, Gordon A. Gallup, A. S. Green, A. L. D. Kilcoyne, J. R. Machacek, J. W. Maseberg, K. W. Mclaughlin, Mark A. Rosenberry Jan 2006

Angular Momentum Partitioning In The Dissociation Of Diatomic Molecules, Timothy J. Gay, J. D. Bozek, J. E. Furst, Gordon A. Gallup, A. S. Green, A. L. D. Kilcoyne, J. R. Machacek, J. W. Maseberg, K. W. Mclaughlin, Mark A. Rosenberry

Timothy J. Gay Publications

We discuss recent experiments that study the transfer of angular momentum from a projectile to the residual target in collisions between the simple diatomic molecules H2 and N2 and spin-polarized electrons or circularly-polarized photons. We observe the fluorescence of both the atomic fragments and excited molecular states, and measure the circular polarization fraction of this light, P3. The incident electron energies range from 10 to 100 eV; the incident photon energies from 33 to 38 eV.

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Analytical Solutions For The Electromagnetic Fields Of Tightly Focused Laser Beams Of Arbitrary Pulse Length, Scott M. Sepke, Donald Umstadter Jan 2006

Analytical Solutions For The Electromagnetic Fields Of Tightly Focused Laser Beams Of Arbitrary Pulse Length, Scott M. Sepke, Donald Umstadter

Donald Umstadter Publications

The analytical solution for a monochromatic focused laser beam was recently published [Opt. Lett. 31, 1447 (2006)]. The effect of introducing bandwidth by including a finite-length temporal pulse envelope is included exactly. This is done formally first in the frequency domain for an arbitrary pulse shape, and the specific case of a cosine-squared envelope is then solved analytically for all pulse lengths, thereby decreasing the computation time by 2 orders of magnitude. The inclusion of longer wavelengths reduces the fraction of laser energy in the focus from 86.5% to 83.5% for a 5 fs Ti:sapphire laser and 72.7% in a …

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Erratum: Dynamics Of Filament Formation In A Kerr Medium [Phys Rev. A 71, 063811 (2005)], Martin Centurion, Ye Pu, Mankei Tsang, Demetri Psaltis Jan 2006

Erratum: Dynamics Of Filament Formation In A Kerr Medium [Phys Rev. A 71, 063811 (2005)], Martin Centurion, Ye Pu, Mankei Tsang, Demetri Psaltis

Martin Centurion Publications

We have found an error in this paper -- [Phys Rev. A 71, 063811 (2005)]. In our calculation of the intensity threshold for breakdown in CS2 we erroneously used the ionization energy of molecular CS2 (10.08 eV). The correct value should be 3.3 eV, the band gap energy of liquid CS2 . Using the band gap energy, nonlinear absorption will be a three-photon process, and the calculated breakdown threshold becomes 8.5 × 1011 W/cm2 (as opposed to the value of 2×1013 W/cm2 reported previously). Multiphoton absorption and plasma defocusing could then become significant …

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Magic Alkali-Fullerene Compound Clusters Of Extreme Thermal Stability, Axel Enders, N. Malinowski, D. Ievlev, E. Zurek, Jochen Autschbach, Klaus Kern Jan 2006

Magic Alkali-Fullerene Compound Clusters Of Extreme Thermal Stability, Axel Enders, N. Malinowski, D. Ievlev, E. Zurek, Jochen Autschbach, Klaus Kern

Axel Enders Publications

The thermal stability of free pure C60-, as well as C60-alkali, and -alkaline-earth metal compound clusters is investigated. We find that small (C60) m-clusters (m ≤ 6) decay at comparatively low temperatures below 400 K, as a consequence of weak intermolecular van der Waals interaction. Adding barium or potassium to the clusters dramatically increases the decay temperatures for “magic” configurations of (C60)mBa2m−1 and (C60)mK2m, which reach values as high as 1780 K. Contrary to common belief, the superstable compound …

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The Electronic Structure And Band Hybridization Of Co/Ti Doped Bafe12O19, Natalie Palina, H. Modrow, R. Müller, J. Hormes, Peter A. Dowben, Yaroslav B. Losovyj Jan 2006

The Electronic Structure And Band Hybridization Of Co/Ti Doped Bafe12O19, Natalie Palina, H. Modrow, R. Müller, J. Hormes, Peter A. Dowben, Yaroslav B. Losovyj

Department of Physics and Astronomy: Faculty Publications

We identify contributions to the valence band of the nanosized BaFe12−2xCoxTixO19 barium ferrite particles, from the cobalt and titanium dopants. Resonant photoemission results show that cobalt and titanium dopants strongly hybridize with the barium ferrite matrix. Fano resonances are identified in the valence band region, at the Ba (5s), Ti (3p) and Co (3p) thresholds, and there are significant contributions to the density of states, residing within 2 eV of the Fermi level, from barium and/or iron.

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"Preface" To Advanced Magnetic Nanostructures, David J. Sellmyer, Ralph Skomski Jan 2006

"Preface" To Advanced Magnetic Nanostructures, David J. Sellmyer, Ralph Skomski

Department of Physics and Astronomy: Faculty Publications

A key trend in modern science and technology is the exploitation of phenomena occurring on length scales between 1 nm and 1000 nm. This nanotechnology or nanoscience approach has lead to the emergence of fi elds such as nanobiology, nanoelectronics, and nanochemistry. An important and—in many respects—pivotal area is nanomagnetism. From early precursors in the first half of the 20th century to recent developments, magnetic nanostructures are interesting scientific objects with many present and emerging applications, including permanent magnets, soft magnets, magnetic recording media, sensors, and structures and materials for spin electronics. A key advantage of artificial magnetic nanostructures is …

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A Three-Grating Electron Interferometer, G. Gronniger, Brett E. Barwick, Herman Batelaan Jan 2006

A Three-Grating Electron Interferometer, G. Gronniger, Brett E. Barwick, Herman Batelaan

Department of Physics and Astronomy: Faculty Publications

We report the observation of fringes from a three-grating electron interferometer. Interference fringes have been observed at low energies ranging from 6 to 10 keV. Contrasts of up to 25% are recorded and exceed the maximal contrast of the classical equivalent Moiré deflectometer. This type of interferometer could serve as a separate beam Mach–Zehnder interferometer for low-energy electron interferometry experiments.

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