Zobrazeno 1 - 10 of 45 pro vyhledávání: '"W. E. Pickett"'
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Akademický článek
High temperature superconductors at optimal doping
Autor: W. E. Pickett
Publikováno v: Iranian Journal of Physics Research, Vol 6, Iss 3, Pp 221-221 (2006)
Intensive study of the high temperature superconductors has been ongoing for two decades. A great deal of this effort has been devoted to the underdoped regime, where the new and difficult physics of the doped Mott insulator has met extra complicatio
Externí odkaz: https://doaj.org/article/075394b7f3354ababbb0a52907d78db5
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2
Effective Hamiltonian for potassium dynamics in theβ-pyrochlore superconductor KOs2O6
Autor: W. E. Pickett, J. Kuneš
Publikováno v: physica status solidi (a). 203:2962-2967
Based on ab initio energies and forces we construct an effective Hamiltonian for anharmonic dynamics of potassium cations in the /?-pyrochlore compound KOs 2 O 6 . We solve numerically the single-site problem which is characterized by an extremely fl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35f99bffb5ee5d612eedf519d93d34a5
https://doi.org/10.1002/pssa.200567138
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3
Electron-phonon coupling in MgB2-like materials: its magnitude and its limits
Autor: W. E. Pickett
Publikováno v: Brazilian Journal of Physics, Volume: 33, Issue: 4, Pages: 695-699, Published: DEC 2003
Brazilian Journal of Physics v.33 n.4 2003
Brazilian Journal of Physics
Sociedade Brasileira de Física (SBF)
instacron:SBF
That very strong coupling of the B-B bond-stretching E2g branch of phonons to the B 2psigma bonding hole states is responsible for the remarkable superconductivity in MgB2 is well established. This entirely new manner of driving the superconducting T
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d904f3afe2800cc3a2928d216d9b502
https://doi.org/10.1590/s0103-97332003000400011
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5
Uniaxial Strain Dependence ofTcinYBa2Cu3O7: Internal Strain Induced Intralayer Charge Transfer
Autor: W. E. Pickett
Publikováno v: Physical Review Letters. 78:1960-1963
Results of {ital ab initio} calculations on uniaxially strained YBa{sub 2}Cu{sub 3}O{sub 7} are correlated with known values of the uniaxial strain dependencies dT{sub c}/d{epsilon}{sub {alpha}} ({alpha}=x,y,z) of the superconducting critical tempera
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b34750f6683698fc9808faa747fd3e3
https://doi.org/10.1103/physrevlett.78.1960
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6
Anab initioinvestigation on the zinc-blende MnAs nanocrystallite
Autor: Huai-Yu Wang, C. Y. Fong, M. C. Qian, W. E. Pickett
Publikováno v: Journal of Applied Physics. 95:7459-7461
Among a new class of spintronics materials, nanoscale dots of the zinc-blende (ZB) MnAs have recently been synthesized on the GaAs(001) surface. We apply an ab initio pseudopotential method with the generalized gradient approximation to study magneti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee761856421c460b3da702f7a9593339
https://doi.org/10.1063/1.1687291
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7
Magnetoelectronic and Magnetostructural Coupling in the La 1 - x Ca x MnO 3 System
Autor: W. E. Pickett, D. J. Singh
Publikováno v: Europhysics Letters (EPL). 32:759-764
Phenomenological models of the "colossal magnetoresistance" manganites have emphasized a local picture for the Mn ion, and little attention has been given to the effects of Mn d-O p hybridization. We present self-consistent local spin-density electro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c5886696af2aead698f843b311e84e7
https://doi.org/10.1209/0295-5075/32/9/010
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8
Lattice instabilities, isotope effect, and high-Tcsuperconductivity inLa2−xBaxCuO4
Autor: Ronald E. Cohen, W. E. Pickett, Henry Krakauer
Publikováno v: Physical Review Letters. 67:228-231
Unlike ${\mathrm{La}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Sr}}_{\mathit{x}}$${\mathrm{CuO}}_{4}$, ${\mathrm{La}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ba}}_{\mathit{x}}$${\mathrm{CuO}}_{4}$, x\ensuremath{\sim}${\mathit{x}}_{\mathr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b8f85756bab1346ced13220bf4794f2
https://doi.org/10.1103/physrevlett.67.228
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9
Linear response separation of a solid into atomic constituents: Li, Al, and their evolution under pressure
Autor: Lilia Boeri, J. Kunstmann, W. E. Pickett
We present the first realization of the generalized pseudoatom concept introduced by Ball, and adopt the name enatom to minimize confusion. This enatom, which consists of a unique decomposition of the total charge density (or potential) of any solid
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7276519fb91020361dd37b05cd29a77d
http://hdl.handle.net/11573/974689
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10
Orbital-quenching-induced magnetism in Ba_2NaOsO_6
Autor: K. W. Lee, W. E. Pickett
The double perovskite \bnoo with heptavalent Os ($d^1$) is observed to remain in the ideal cubic structure ({\it i.e.} without orbital ordering) despite single occupation of the $t_{2g}$ orbitals, even in the ferromagnetically ordered phase below 6.8
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::582c4f710f1c42cfd0c3ef2a48546bf9
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