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Full-Text Articles in Physics
Quantum Many-Body Calculation Of Mixed-Parity Pairing In The Sr2ruo4 Superconductor Induced By Spin-Orbit Coupling, J. J. Deisz, Tim Kidd
Quantum Many-Body Calculation Of Mixed-Parity Pairing In The Sr2ruo4 Superconductor Induced By Spin-Orbit Coupling, J. J. Deisz, Tim Kidd
Faculty Publications
The unusual superconducting state in Sr2RuO4 has long been viewed as being analogous to a superfluid state in liquid 3He. Nevertheless, calculations based on this odd-parity state are presently unable to completely reconcile the properties of Sr2RuO4. Using a self-consistent quantum many-body scheme that employs realistic parameters, we are able to model several signature properties of the normal and superconducting states of Sr2RuO4. We find that the dominant component of the model superconducting state is of even parity and closely related to superconducting state for the high-Tc …
Reconstructed Fermi Surface Of Underdoped Bi2sr2cacu2o8+Δ Cuprate Superconductors, H.-B. Yang, J. D. Rameau, Z.-H. Pan, G. D. Gu, P. D. Johnson, H. Claus, D. G. Hinks, Tim Kidd
Reconstructed Fermi Surface Of Underdoped Bi2sr2cacu2o8+Δ Cuprate Superconductors, H.-B. Yang, J. D. Rameau, Z.-H. Pan, G. D. Gu, P. D. Johnson, H. Claus, D. G. Hinks, Tim Kidd
Faculty Publications
The Fermi surface topologies of underdoped samples of the high-Tc superconductor Bi2Sr2CaCu2O8+δ have been measured with angle resolved photoemission. By examining thermally excited states above the Fermi level, we show that the observed Fermi surfaces in the pseudogap phase are actually components of fully enclosed hole pockets. The spectral weight of these pockets is vanishingly small at the magnetic zone boundary, creating the illusion of Fermi ‘‘arcs.’’ The area of the pockets as measured in this study is consistent with the doping level, and hence carrier density, of the samples measured. Furthermore, …
Properties Of Hydrogen Terminated Diamond As A Photocathode, J. D. Rameau, J. Smedley, E. M. Muller, T. E. Kidd, P. D. Johnson
Properties Of Hydrogen Terminated Diamond As A Photocathode, J. D. Rameau, J. Smedley, E. M. Muller, T. E. Kidd, P. D. Johnson
Faculty Publications
Electron emission from the negative electron affinity (NEA) surface of hydrogen terminated, boron doped diamond in the [100] orientation is investigated using angle resolved photoemission spectroscopy (ARPES). ARPES measurements using 16 eV synchrotron and 6 eV laser light are compared and found to show a catastrophic failure of the sudden approximation. While the high energy photoemission is found to yield little information regarding the NEA, low energy laser ARPES reveals for the first time that the NEA results from a novel Franck-Condon mechanism coupling electrons in the conduction band to the vacuum. The result opens the door to the development …
Synthesis Of Freestanding Hfo2 Nanostructures, Tim Kidd, Aaron O'Shea, Kayla Boyle, Jeff Wallace, Laura Strauss
Synthesis Of Freestanding Hfo2 Nanostructures, Tim Kidd, Aaron O'Shea, Kayla Boyle, Jeff Wallace, Laura Strauss
Faculty Publications
Two new methods for synthesizing nanostructured HfO2 have been developed. The first method entails exposing HfTe2 powders to air. This simple process resulted in the formation of nanometer scale crystallites of HfO2. The second method involved a two-step heating process by which macroscopic, freestanding nanosheets of HfO2 were formed as a byproduct during the synthesis of HfTe2. These highly two-dimensional sheets had side lengths measuring up to several millimeters and were stable enough to be manipulated with tweezers and other instruments. The thickness of the sheets ranged from a few to a few …