Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Atomic, Molecular and Optical Physics (25)
- Engineering (20)
- Materials Science and Engineering (17)
- Engineering Physics (15)
- Other Physics (12)
-
- Chemistry (9)
- Materials Chemistry (6)
- Quantum Physics (6)
- Nanoscience and Nanotechnology (5)
- Biological and Chemical Physics (4)
- Optics (4)
- Physical Chemistry (4)
- Computer Sciences (3)
- Electrical and Computer Engineering (3)
- Inorganic Chemistry (3)
- Engineering Science and Materials (2)
- Graphics and Human Computer Interfaces (2)
- Numerical Analysis and Scientific Computing (2)
- Semiconductor and Optical Materials (2)
- Analytical Chemistry (1)
- Applied Mathematics (1)
- Artificial Intelligence and Robotics (1)
- Astrophysics and Astronomy (1)
- Biochemistry, Biophysics, and Structural Biology (1)
- Biophysics (1)
- Chemical Engineering (1)
- Civil and Environmental Engineering (1)
- Institution
-
- Utah State University (48)
- University of Nebraska - Lincoln (41)
- University of Kentucky (14)
- Purdue University (8)
- City University of New York (CUNY) (6)
-
- Linfield University (4)
- University of South Florida (3)
- Virginia Commonwealth University (3)
- Wayne State University (3)
- Georgia Southern University (2)
- Murray State University (2)
- Old Dominion University (2)
- University of Central Florida (2)
- University of Louisville (2)
- University of Nevada, Las Vegas (2)
- University of Richmond (2)
- Bowling Green State University (1)
- Bucknell University (1)
- Chapman University (1)
- Dartmouth College (1)
- Gettysburg College (1)
- Kennesaw State University (1)
- LSU New Orleans (1)
- Louisiana State University (1)
- Michigan Technological University (1)
- Portland State University (1)
- San Jose State University (1)
- University of Arkansas, Fayetteville (1)
- University of Denver (1)
- University of Texas at El Paso (1)
- Keyword
-
- Graphene (9)
- Iridates (4)
- Pure sciences (4)
- Phosphorene (3)
- Physics (3)
-
- Quantum Hall effect (3)
- 2-dimensional systems (2)
- 2D materials (2)
- Capacitance (2)
- Carbon nanotubes (2)
- Diffusion (2)
- Dirac fermions (2)
- Electron diffraction (2)
- Films (2)
- Gold (2)
- Interface (2)
- Magnetism (2)
- Metal-insulator transition (2)
- Mobility (2)
- Quantum Monte Carlo (2)
- Quantum phase transitions (2)
- Resonant inelastic x-ray scattering (2)
- Semiconductor (2)
- Skyrmions (2)
- 2D Materials (1)
- 2d (1)
- Acoustic transmission (1)
- Adaptive Optics (1)
- Aharonov-Bohm effect (1)
- Aluminum iodide (1)
- Publication
-
- Posters (18)
- Presentations (13)
- Conference Proceedings (11)
- Physics and Astronomy Faculty Publications (10)
- Evgeny Tsymbal Publications (8)
-
- Department of Physics and Astronomy: Faculty Publications (6)
- Nebraska Center for Materials and Nanoscience: Faculty Publications (6)
- Stephen Ducharme Publications (6)
- Senior Theses and Projects (5)
- Dissertations, Theses, and Capstone Projects (4)
- Open Access Dissertations (4)
- Senior Theses (4)
- Electronic Theses and Dissertations (3)
- Physics Faculty Publications (3)
- Shireen Adenwalla Papers (3)
- Theses and Dissertations (3)
- USF Tampa Graduate Theses and Dissertations (3)
- Wayne State University Dissertations (3)
- Alexei Gruverman Publications (2)
- Center for Advanced Materials Faculty Publications (2)
- Honors Undergraduate Theses (2)
- Materials Research Science and Engineering Center: Faculty Publications (2)
- Peter Dowben Publications (2)
- Posters-at-the-Capitol (2)
- Publications and Research (2)
- Robert Streubel Papers (2)
- The 8th International Conference on Physical and Numerical Simulation of Materials Processing (2)
- The Summer Undergraduate Research Fellowship (SURF) Symposium (2)
- Theses and Dissertations--Physics and Astronomy (2)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (2)
- Publication Type
- File Type
Articles 151 - 159 of 159
Full-Text Articles in Condensed Matter Physics
2d Cocrystallization From H‑Bonded Organic Ferroelectrics, Donna A. Kunkel, James Hooper, Benjamin Bradley, Lisa Schlueter, Tom Rasmussen, Paulo Costa, Sunit Beniwal, Stephen Ducharme, Eva Zurek, Axel Enders
2d Cocrystallization From H‑Bonded Organic Ferroelectrics, Donna A. Kunkel, James Hooper, Benjamin Bradley, Lisa Schlueter, Tom Rasmussen, Paulo Costa, Sunit Beniwal, Stephen Ducharme, Eva Zurek, Axel Enders
Stephen Ducharme Publications
The synthesis of 2D H-bonded cocrystals from the room-temperature ferroelectric organics croconic acid (CA) and 3-hydroxyphenalenone (3-HPLN) is demonstrated through self-assembly on a substrate under ultrahigh vacuum. 2D cocrystal polymorphs of varied stoichiometry were identified with scanning tunneling microscopy, and one of the observed structural building blocks consists of two CA and two 3-HPLN molecules. Computational analysis with density functional theory confirmed that the experimental (CA)2(3-HPLN)2 tetramers are lower in energy than single-component structures due to the ability of the tetramers to pack efficiently in two dimensions, the promotion of favorable electrostatic interactions between tetramers, and the …
Fabrication Of Diisopropylammonium Bromide Aligned Microcrystals With In-Plane Uniaxial Polarization, Shashi Poddar, Haidong Lu, Jingfeng Song, Om Goit, Shah Valloppilly, Alexei Gruverman, Stephen Ducharme
Fabrication Of Diisopropylammonium Bromide Aligned Microcrystals With In-Plane Uniaxial Polarization, Shashi Poddar, Haidong Lu, Jingfeng Song, Om Goit, Shah Valloppilly, Alexei Gruverman, Stephen Ducharme
Stephen Ducharme Publications
Textured arrays of ferroelectric microcrystals of diisopropylammonium bromide were grown from solution at room temperature onto silicon substrates and studied by means of x-ray diffraction, atomic force microscopy, electron microscopy, and piezoresponse force microscopy. The needle-shaped crystals had dimensions of approximately 50 μm × 5 μm in the plane and were approximately 200 nm thick, where the dimensions and arrangement were influenced by growth conditions. The observations suggest an Ostwald ripening mechanism of the microcrystal growth. The crystals had the structure of the ferroelectric phase, where the polarization axis was in-plane and parallel to the long axis of …
The Metal/Organic Interface In Cobalt/Vinylidene Fluoride Heterostructures, Keith Foreman, E Echeverria, Mark A. Koten, R. M. Lindsay, N. Hong, Jeffrey E. Shield, Shireen Adenwalla
The Metal/Organic Interface In Cobalt/Vinylidene Fluoride Heterostructures, Keith Foreman, E Echeverria, Mark A. Koten, R. M. Lindsay, N. Hong, Jeffrey E. Shield, Shireen Adenwalla
Shireen Adenwalla Papers
Organic-based electronic devices are rapidly increasing in popularity, making it essential to understand and characterize the interface between organic materials and metallic electrodes. This work reports on the characterization of the interface between thin films of an emerging organic ferroelectric, vinylidene fluoride (VDF) oligomer, and Co, an important high Curie temperature ferromagnet. Using a wide battery of experimental techniques, it is shown that VDF oligomer thin films as thin as 15 nm can halt, or prevent, Co oxidization in atmospheric conditions, a necessary condition for device applications. Selectivity of magnetic properties, such as remanent magnetization, is enabled by the clarification …
Ferroelectric Characterization And Growth Optimization Of Thermally Evaporated Vinylidene Fluoride Thin Films, Keith Foreman, N. Hong, C. Labedz, C. Shearer, Stephen Ducharme, Shireen Adenwalla
Ferroelectric Characterization And Growth Optimization Of Thermally Evaporated Vinylidene Fluoride Thin Films, Keith Foreman, N. Hong, C. Labedz, C. Shearer, Stephen Ducharme, Shireen Adenwalla
Shireen Adenwalla Papers
Organic thin films have numerous advantages over inorganics in device processing and price. The large polarization of the organic ferroelectric oligomer vinylidene fluoride (VDF) could prove useful for both device applications and the investigation of fundamental physical phenomena. A VDF oligomer thin film vacuum deposition process, such as thermal evaporation, preserves film and interface cleanliness, but is challenging, with successful deposition occurring only within a narrow parameter space. We report on the optimal deposition parameters for VDF oligomer thin films, refining the parameter space for successful deposition, resulting in a high yield of robust ferroelectric films. In particular, we investigate …
Theory Of Magnon Motive Force In Chiral Ferromagnets, Utkan Güngördü, Alexey Kovalev
Theory Of Magnon Motive Force In Chiral Ferromagnets, Utkan Güngördü, Alexey Kovalev
Department of Physics and Astronomy: Faculty Publications
We predict that magnon motive force can lead to temperature dependent, nonlinear chiral damping in both conducting and insulating ferromagnets. We estimate that this damping can significantly influence the motion of skyrmions and domain walls at finite temperatures. We also find that in systems with low Gilbert damping moving chiral magnetic textures and resulting magnon motive forces can induce large spin and energy currents in the transverse direction.
Stability Of Skyrmion Lattices And Symmetries Of Quasi-Two-Dimensional Chiral Magnets, Utkan Güngördü, Rabindra Nepal, Oleg A. Tretiakov, Kirill D. Belashchenko, Alexey Kovalev
Stability Of Skyrmion Lattices And Symmetries Of Quasi-Two-Dimensional Chiral Magnets, Utkan Güngördü, Rabindra Nepal, Oleg A. Tretiakov, Kirill D. Belashchenko, Alexey Kovalev
Department of Physics and Astronomy: Faculty Publications
Recently there has been substantial interest in realizations of skyrmions, in particular in quasi-two-dimensional (2D) systems due to increased stability resulting from reduced dimensionality. A stable skyrmion, representing the smallest realizable magnetic texture, could be an ideal element for ultradense magnetic memories. Here we use the most general form of the quasi-2D free energy with Dzyaloshinskii-Moriya interactions constructed from general symmetry considerations reflecting the underlying system. We predict that the skyrmion phase is robust and it is present even when the system lacks the in-plane rotational symmetry. In fact, the lowered symmetry leads to increased stability of vortex-antivortex lattices with …
Magnetoelectric Domain Wall Dynamics And Its Implications For Magnetoelectric Memory, Kirill D. Belashchenko, Oleg Tchernyshyov, Alexey Kovalev, Oleg A. Tretiakov
Magnetoelectric Domain Wall Dynamics And Its Implications For Magnetoelectric Memory, Kirill D. Belashchenko, Oleg Tchernyshyov, Alexey Kovalev, Oleg A. Tretiakov
Department of Physics and Astronomy: Faculty Publications
Domain wall dynamics in a magnetoelectric antiferromagnet is analyzed, and its implications for magnetoelectric memory applications are discussed. Cr2O3 is used in the estimates of the materials parameters. It is found that the domain wall mobility has a maximum as a function of the electric field due to the gyrotropic coupling induced by it. In Cr2O3, the maximal mobility of 0.1 m/(s Oe) is reached at E = 0.06 V/nm. Fields of this order may be too weak to overcome the intrinsic depinning field, which is estimated for B-doped Cr2O3 …
First-Principles Studies Of Group Iv And Group V Related Two Dimensional Materials, Gaoxue Wang
First-Principles Studies Of Group Iv And Group V Related Two Dimensional Materials, Gaoxue Wang
Dissertations, Master's Theses and Master's Reports
Two dimensional (2D) materials have been extensively studied due to their novel properties and technologically important applications. Especially, the discovery of graphene has stimulated an avalanche of investigations to exploit its novel properties for applications at nanoscale. In the post-silicon era, graphene has been widely regarded as the most promising building blocks for the electronic devices. However, its metallic nature together with sensitivity to the environment leads to somewhat limited scope of applications. A finite band gap in a material is known to be essential for the fabrication of devices such as transistors. Such a limitation associated with graphene has …
Theoretical Investigations Of Zinc Blende And Wurtzite Semiconductor Quantum Wells On The Rotated Substrates, Igor Ivashev
Theoretical Investigations Of Zinc Blende And Wurtzite Semiconductor Quantum Wells On The Rotated Substrates, Igor Ivashev
Theses and Dissertations (Comprehensive)
We present a comprehensive set of computations of effective mass theory for both the Kane's parabolic band approximation and Luttinger-Kohn's valence band mixing approximation. We generalize the kp method to be able to evaluate band structures for the materials such as zincblende InGaAsN and GaAsBi compounds used in long wavelength lasers and wurtzite materials used in short wavelength lasers. We investigate methodology to study band structure of semiconductors that are grown away from natural direction. The strain influence is introduced via Bir and Pikus model. It is expected that band structure is strongly dependent on direction of crystal growth and …