Zobrazeno 1 - 10
of 79
pro vyhledávání: '"J.T. Gammel"'
Publikováno v:
Journal of Physics: Condensed Matter. 10:L437-L443
Recent experiments have revealed a magnetic excitation with an unexpectedly low energy of meV in . Having noticed that the effective oxygen - oxygen hopping is driven to be positive by the surrounding Li ions with s orbitals, we employ a three-band P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f612aa1a058af4a30689bbddb844513b
https://doi.org/10.1088/0953-8984/10/26/001
https://doi.org/10.1088/0953-8984/10/26/001
Publikováno v:
Physical Review Letters. 80:3284-3287
Quantum breathers are studied numerically in several electron-phonon coupled finite chain systems, in which the coupling results in intrinsic nonlinearity but with varying degrees of nonadiabaticity. As for quantum nonlinear lattice systems, we find
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59ec1a4df9d9ab149c45f549f2c0afc3
https://doi.org/10.1103/physrevlett.80.3284
https://doi.org/10.1103/physrevlett.80.3284
Publikováno v:
Physical Review B. 57:R3241-R3244
Using a two-dimensional three-band Peierls-Hubbard model appropriate to layered transition-metal oxides, and in an inhomogeneous Hartree-Fock approximation, we show that several kinds of charge-localized mesoscopic patterns (stripes) may exist: verti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c63acbe0482ba39d6ab5e21062f57213
https://doi.org/10.1103/physrevb.57.r3241
https://doi.org/10.1103/physrevb.57.r3241
Autor:
J.T. Gammel, Laura A. Worl, A. R. Bishop, Steven P. Love, X.Z. Huang, Basil I. Swanson, Avadh Saxena
Publikováno v:
Synthetic Metals. 56:3413-3420
Halogen-bridged mixed-valence transition metal linear chain complexes (or MX chains, M: Pt, Pd, Ni; X: Cl, Br, I) are highly anisotropic, quasi-one-dimensional (Q1D) materials that are related to conducting polymers, mixed stack charge-transfer salts
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https://explore.openaire.eu/search/publication?articleId=doi_________::ddffad811a264e2d6b8f03121a3ae05b
https://doi.org/10.1016/0379-6779(93)90137-l
https://doi.org/10.1016/0379-6779(93)90137-l
Akademický článek
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Publikováno v:
Synthetic Metals. 50:631-646
We study the nature of triplet states in correlated quasi-one-dimensional bands, with emphasis on the half-filled case relevant to conducting polymers. To incorporate both electron-phonon and electron-electron interaction effects, we use a Peierls-ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::443525bc5b5a2858bf1b6e315fc49a41
https://doi.org/10.1016/0379-6779(92)90220-d
https://doi.org/10.1016/0379-6779(92)90220-d
Publikováno v:
Synthetic Metals. 42:2727-2732
We study a two-band Peierls-Hubbard model for halogen-bridged mixed-valence transition metal linear chain complexes (MX chains). Electron-electron correlations (both Hubbard and PPP-like expressions) are incorporated using several techniques. A seque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3b5c7cd731b481a3983d017cfe77407
https://doi.org/10.1016/0379-6779(91)91461-i
https://doi.org/10.1016/0379-6779(91)91461-i
Publikováno v:
Synthetic Metals. 42:2715-2720
Theoretical modeling of halogen-bridged mixed valence insulators such as [Pt(en)2] [Pt(en)2Cl2](ClO4)4 (en = N2C2H8) is described in terms of an extended Peierls-Hubbard tight-binding model incorporating 3 4 - filling of 2-bands. Ground and polaronic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e4a533960b3cc45ea1c07e5828e8034
https://doi.org/10.1016/0379-6779(91)91459-n
https://doi.org/10.1016/0379-6779(91)91459-n
Publikováno v:
Synthetic Metals. 42:2755-2759
We have studied the effects of electron-electron (e-e) correlations on the ground state and excitations of MX chains within a 3/4-filled two-band discrete Peierls-Hubbard model with on-site and inter-site electron-phonon (e-p) couplings. We have used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e34626638363d581995977589dbadb
https://doi.org/10.1016/0379-6779(91)91467-o
https://doi.org/10.1016/0379-6779(91)91467-o
Publikováno v:
Synthetic Metals. 42:2745-2748
The resonance Raman spectroscopy of defect states in [Pt(en) 2 ][Pt(en) 2 Cl 2 ](CIO 2 ) 4 serves to resolve the twwo intragap defect adsorption features (A and B bands) located immediately to the red of the charge transfer band edge into five separa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36605bae1ccdb630a6365eafc5f6f728
https://doi.org/10.1016/0379-6779(91)91464-l
https://doi.org/10.1016/0379-6779(91)91464-l