Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Tetsuro Saso"'
Autor:
Hajime Shirai, Hiroaki Nakamura, Takashi Komine, Yasuhiro Hasegawa, Hiroyuki Morita, Tetsuro Saso, Y. Ishikawa
Publikováno v:
Physica B: Condensed Matter. 382:140-146
Carrier densities and mobilities in polycrystalline bismuth contaminated with 0.01 at% tin are determined by measurement of various electronic transport parameters in low magnetic fields from 50 to 300 K. The parameters measured include the Seebeck c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f4e313559c3f8b4fc2ea4f95f81eeb3
https://doi.org/10.1016/j.physb.2006.02.011
https://doi.org/10.1016/j.physb.2006.02.011
Autor:
Tetsuro Saso, Tetsuya Mutou
Publikováno v:
Journal of the Physical Society of Japan. 73:2900-2905
A simple tight-binding model is constructed for the description of the electronic structure of some Ce-based filled skutterudite compounds showing an energy gap or pseudogap behavior. Assuming band-diagonal electron interactions on this tight-binding
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9411e5ab9be47c0cc53972c532b5e7f
https://doi.org/10.1143/jpsj.73.2900
https://doi.org/10.1143/jpsj.73.2900
Autor:
Hisatomo Harima, Tetsuro Saso
Publikováno v:
Journal of the Physical Society of Japan. 72:1131-1137
A new LDA+U band calculation is performed on the Kondo insulator material YbB$_{12}$ and an energy gap of about 0.001Ryd is obtained. Based on this, a simple tight-binding model with 5d$\epsilon$ and 4f $\Gamma_8$ orbitals on Yb atoms and the nearest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50409d645aac73ab6205f75596dbd824
https://doi.org/10.1143/jpsj.72.1131
https://doi.org/10.1143/jpsj.72.1131
Autor:
Tetsuro Saso
Publikováno v:
Physica B: Condensed Matter. 328:58-62
Thermoelectric power of the Kondo insulators is analyzed theoretically. It is pointed out that Kelvin's relation found in 1851 must be modified for insulators at low temperatures. A realistic tight-binding model is constructed for the description of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8aae8eb7cb21aa9e4b308e95894f23e
https://doi.org/10.1016/s0921-4526(02)01809-4
https://doi.org/10.1016/s0921-4526(02)01809-4
Autor:
Tetsuro Saso, Kentaro Urasaki
Publikováno v:
Journal of physics and chemistry of solids. 63(6-8):1475-1478
Thermoelectric power (TEP) of the Kondo insulators is investigated theoretically within the framework of the dynamical mean field theory. It is found that the temperature dependence of the Seebeck coefficient changes from the ordinary behavior S ( T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85640952af8656dadc936fd5ea9010ce
http://id.nii.ac.jp/1586/00012494/
http://id.nii.ac.jp/1586/00012494/
Autor:
Tetsuro Saso, Kentaro Urasaki
Publikováno v:
Journal of the Physical Society of Japan. 68:3477-3480
Effects of electron correlation in FeSi are studied in terms of the two-band Hubbard model with the density of states obtained from the band calculation. Using the self-consistent second-order perturbation theory combined with the local approximation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae5282cf469ccdc32c96cf0810547b14
https://doi.org/10.1143/jpsj.68.3477
https://doi.org/10.1143/jpsj.68.3477
Autor:
Tetsuro Saso, Osamu Takagi
Publikováno v:
Journal of the Physical Society of Japan. 68:1997-2005
A new scheme is proposed for calculating excitation spectrum of a quantum dot expressed by the impurity Anderson model. It is based on the second order perturbation theory with respect to the Coulomb repulsion, but is modified so as to reproduce the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8b5ac55343c8afafc85c7c67be28119
https://doi.org/10.1143/jpsj.68.1997
https://doi.org/10.1143/jpsj.68.1997
Publikováno v:
Journal of the Physical Society of Japan. 77:312-314
YbB 12 is a typical Kondo insulator with an energy gap E g ∼100 K. It has a cubic symmetry, but the gap closing field shows anisotropy when magnetic field is applied. CeOs 4 Sb 12 shows weak insulating behavior below 50 T. It, however, should be a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddd40ca3ecfff26e9c3a12ef4ade1e4a
https://doi.org/10.1143/jpsjs.77sa.312
https://doi.org/10.1143/jpsjs.77sa.312
Publikováno v:
Journal of the Physical Society of Japan. 77:196-198
We construct an effective model of heavy fermion metal YbAl 3 . The nearly free electron method with the empty-core pseudo-potential scheme is employed for conduction electrons, which hybridize with localized 4f-electrons. The Hamiltonian includes on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a27c383c63954e555cf6ebeaf0a12b0
https://doi.org/10.1143/jpsjs.77sa.196
https://doi.org/10.1143/jpsjs.77sa.196
