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Defect physics of BaCuChF (Ch=S, Se, Te) p-type transparent conductors

Creator:: Zakutayev, A., Tate, Janet, and Schneider, G.
Abstract:: Native point defects, defect complexes, and oxygen impurities in BaCuChF were studied using density functional theory calculations, self-consistent thermodynamic simulations, and various experimental techniques. Unintentional p-type conductivity in BaCuChF is explained by the presence of copper vacancies with transition levels in the valence band. These acceptor-like defects are partially compensated...
Resource Type:: Article
Full Text:: /82�19�/195204�8� ©2010 The American Physical Society195204-1 both theoretical and experimental

Electronic structure and excitonic absorption in BaCuChF (Ch=S, Se, and Te)

Creator:: Zakutayev, A., Kykyneshi, R., Schneider, G., McIntyre, D. H., and Tate, Janet
Abstract:: Double excitonic absorption peaks are observed in textured BaCuSF and BaCuSeF thin films. The excitonic doublet separation increases with increasing fraction of heavy chalcogen in the thin-film solid solutions, in good agreement with the spin-orbit splitting of the valence bands calculated by density-functional theory. In BaCuSF and BaCuSeF, the excitons...
Resource Type:: Article
Full Text:: �15�/155103�9� ©2010 The American Physical Society155103-1 the full-potential linearized augmented

Origin of p-type conduction in single-crystal CuAlO₂

Creator:: Tate, Janet, Ju, H. L., Moon, J. C., Zakutayev, A., Richard, A. P., Russell, J., and McIntyre, D. H.
Abstract:: We report measurements of the structural, optical, transport, and magnetic properties of single crystals of the anisotropic p-type transparent semiconductor CuAlO₂. The indirect and direct band gaps are 2.97 and 3.47 eV, respectively. Temperature-dependent Hall measurements yield a positive Hall coefficient in the measured range and an activated carrier temperature...
Resource Type:: Article
Full Text:: -0121/2009/80�16�/165206�8� ©2009 The American Physical Society165206-1 yCuO + 1 2 �1 − y�Cu2O + 1

Scaling of thin-film Nd₁.₈₅Ce₀.₁₅CuO[subscript 4-y] resistivity-current isotherms at low fields: Implications for vortex phase transitions and universality

Creator:: Roberts, J. M., Brown, Brandon, Tate, Janet, Xi, X. X., and Mao, S. N.
Abstract:: We have investigated a second-order phase transition of the vortex lattice in thin-film Nd₁.₈₅Ce₀.₁₅CuO[subscript 4-y] from 1 mT to 1 T applied magnetic fields. The dc resistivity-current density data for each field exhibit critical scaling consistent with a second-order vortex-liquid to vortex-solid phase transition. The high-field data support the vortex-glass...
Resource Type:: Article
Full Text:: described previously. The NCCO 0163-1829/95/51(21}/15281(5}/$06.00 1995 The American Physical Society

Scaling of voltage-current characteristics of thin-film Y-Ba-Cu-O at low magnetic fields

Creator:: Roberts, J. M., Brown, Brandon, Hermann, B. A., Tate, J., and Tate, Janet
Abstract:: We have measured voltage-current characteristics for YBa₂Cu₃O₇ thin films in magnetic fields from 5 T to ambient, including some in the millitesla range. In all cases, the resistivity —current density isotherms can be separated into two classes: those which exhibit upward curvature, and have constant resistivity at low currents, and...
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Full Text:: 13 7 this work this work 0163-1829/94/49(10)/6890(5)/$06. 00 6890 1994 The American Physical

Evidence for three-dimensional flux creep in thin-film Bi₂Sr₂CaCu₂O₈₊δ

Creator:: Karapetrov, Goran and Tate, Janet
Abstract:: We have measured sweep-rate-dependent magnetization hysteresis curves of thin-film Bi₂Sr₂CaCu₂O[subscript 8+δ] using a Hall probe magnetometer in an unconventional geometry. We find a structure in the response well below the three-dimensional to two-dimensional crossover field. The observed strong enhancement of the perpendicular field component’s creep rate in the presence of...
Resource Type:: Article
Full Text:: Physical Society 52 EVIDENCE FOR THREE-DIMENSIONAL FLUX CREEP IN. . . 3777 The experiments testing the

Measurement of the muon antineutrino double-differential cross section for quasielastic-like scattering on hydrocarbon at Eν ∼ 3.5 GeV

Creator:: Schellman, Heidi, Fields, Laura J., and Patrick, Cheryl E.
Abstract:: We present double-differential measurements of antineutrino charged-current quasielastic scattering in the MINERvA detector. This study improves on a previous single-differential measurement by using updated reconstruction algorithms and interaction models and provides a complete description of observed muon kinematics in the form of a double-differential cross section with respect to muon...
Resource Type:: Article
Full Text:: , Medford, MA 02155, USA. Published by the American Physical Society under the terms of the Creative

Measurement of K⁺ production in charged-current ν[subscript]μ interactions

Creator:: Marshall, C. M., Aliaga, L., Altinok, O., Bellantoni, L., Bercellie, A., Betancourt, M., Bodek, A., Bravar, A., Budd, H., Cai, T., Carneiro, M. F., Chvojka, J., da Motta, H., Devan, J., Dytman, S. A., Díaz, G. A., Eberly, B., Endress, E., Felix, J., Fields, L., Filkins, A., Fine, R., Gago, A. M., Galindo, R., Gallagher, H., Ghosh, A., Golan, T., Gran, R., Griswold, S., Harris, D. A., Higuera, A., Hurtado, K., Kiveni, M., Kleykamp, J., Kordosky, M., Le, T., Maher, E., Majoros, I., Manly, S., Mann, W. A., Martinez Caicedo, D. A., McFarland, K. S., McGivern, C. L., McGowan, A. M., Messerly, B., Miller, J., Mislivec, A., Morfín, J. G., Mousseau, J., Naples, D., Nelson, J. K., Norrick, A., Nuruzzaman, Osta, J., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Rakotondravohitra, L., Ramirez, M. A., Ransome, R. D., Ray, H., Ren, L., Rimal, D., Rodrigues, P. A., Rosenberg, M., Ruterbories, D., Schellman, H., Schmitz, D. W., Shadler, L. A., Simon, C., Solano Salinas, C. J., Sánchez, S. F., Tice, B. G., Valencia, E., Walton, T., Wang, Z., Watkins, P., Wiley, K., Wolcott, J., Wospakrik, M., Zhang, D., and MINERvA Collaboration
Abstract:: Production of Kþ mesons in charged-current νμ interactions on plastic scintillator (CH) is measured using MINERvA exposed to the low-energy NuMI beam at Fermilab. Timing information is used to isolate a sample of 885 charged-current events containing a stopping Kþ which decays at rest. The differential cross section in Kþ...
Resource Type:: Article

Neutron-irradiation effects on the V-I characteristics of YBa₂Cu₃O₇₋δ twinned crystals: Linking transport results in a variety of copper oxide superconductors

Creator:: Brown, Brandon, Roberts, J. M., and Tate, Janet
Abstract:: We have investigated the depinning process of magnetic flux vortices in twinned crystals of YBa₂Cu₃O₇₋δ in intermediate applied magnetic fields parallel to the crystallographic c axis through precise resistivity measurements before and after fast-neutron irradiation. Of particular interest for each field is the power-law dependence of the electric field on...
Resource Type:: Article
Full Text:: Physical Society The other key to this analysis is the Larkin-Ovchinnikov length,Lp . Larkin and

Exciton dynamics in atomically thin MoS2: Interexcitonic interaction and broadening kinetics

Creator:: Sim, Sangwan, Park, Jusang, Song, Jeong-Gyu, In, Chihun, Lee, Yun-Shik, Kim, Hyungjun, and Choi, Hyunyong
Abstract:: We report ultrafast pump-probe spectroscopy examining exciton dynamics in atomically thin MoS2. Spectrally and temporally resolved measurements are performed to investigate the interaction dynamics of two important direct-gap excitons (A and B) and their associated broadening kinetics. The two excitons show strongly correlated interexcitonic dynamic, in which the transient blue-shifted...
Resource Type:: Article
Full Text:: American Physical Society SIM, PARK, SONG, IN, LEE, KIM, AND CHOI PHYSICAL REVIEW B 88, 075434 (2013

ScholarsArchive@OSU

Defect physics of BaCuChF (Ch=S, Se, Te) p-type transparent conductors

Electronic structure and excitonic absorption in BaCuChF (Ch=S, Se, and Te)

Origin of p-type conduction in single-crystal CuAlO₂

Scaling of thin-film Nd₁.₈₅Ce₀.₁₅CuO[subscript 4-y] resistivity-current isotherms at low fields: Implications for vortex phase transitions and universality

Scaling of voltage-current characteristics of thin-film Y-Ba-Cu-O at low magnetic fields

Evidence for three-dimensional flux creep in thin-film Bi₂Sr₂CaCu₂O₈₊δ

Measurement of the muon antineutrino double-differential cross section for quasielastic-like scattering on hydrocarbon at Eν ∼ 3.5 GeV

Measurement of K⁺ production in charged-current ν[subscript]μ interactions

Neutron-irradiation effects on the V-I characteristics of YBa₂Cu₃O₇₋δ twinned crystals: Linking transport results in a variety of copper oxide superconductors

Exciton dynamics in atomically thin MoS2: Interexcitonic interaction and broadening kinetics

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