Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Tsumuraya, Takao"'
Autor:
Oshima, Yugo, Ishii, Yasuyuki, Pratt, Francis L., Watanabe, Isao, Seo, Hitoshi, Tsumuraya, Takao, Miyazaki, Tsuyoshi, Kato, Reizo
The molecular triangular lattice system, beta'-EtMe3Sb[Pd(dmit)2]2, is considered as a candidate material for the quantum spin liquid (QSL) state, although ongoing debates arise from recent controversial results. Here, the results of electron spin re
Externí odkaz:
http://arxiv.org/abs/2410.20076
Publikováno v:
J. Phys. Soc. Jpn 93(2024)123704
Electronic properties of molecular conductors exhibiting antiferromagnetic (AFM) spin order and charge order (CO) owing to electron correlation are studied using first-principles density functional theory calculations. We investigate two systems, a q
Externí odkaz:
http://arxiv.org/abs/2407.03455
Publikováno v:
J. Phys. Soc. Jpn. 93, 054704 (2024)
The Seebeck coefficient is examined for two-dimensional Dirac electrons in the three-quarter filled organic conductor alpha-(BEDT-TTF)_2I_3 under hydrostatic pressure, where the Seebeck coefficient is proportional to the ratio of the thermoelectric c
Externí odkaz:
http://arxiv.org/abs/2404.05914
Autor:
Itoi, Miho, Yoshimi, Kazuyoshi, Ma, Hanming, Misawa, Takahiro, Tsumuraya, Takao, Bhoi, Dilip, Komatsu, Tokutaro, Mori, Hatsumi, Uwatoko, Yoshiya, Seo, Hitoshi
We present a combined experimental and theoretical study on the quasi-one-dimensional organic conductor (TMTTF)$_2$PF$_6$, and elucidate the variation of its physical properties under pressure. We fully resolve the crystal structure by single crystal
Externí odkaz:
http://arxiv.org/abs/2403.13816
Publikováno v:
Phys. Rev. Lett. 131, 036401 (2023)
An $ab$ $initio$ investigation of the family of molecular compounds TM$_2$$X$ is conducted, where TM is either TMTSF or TMTTF and $X$ takes centrosymmetric monovalent anions. By deriving the extended Hubbard-type Hamiltonians from first-principles ba
Externí odkaz:
http://arxiv.org/abs/2210.13726
Publikováno v:
Applied Physics Express 15, 075506 (2022)
The origin of the phase stability of 18$R$ Mg-Zn-Y alloys with a long-period stacking order (LPSO) is studied using first-principles calculations. We calculate the heat of formation as a function of the number of Zn vacancies to discuss the role of Z
Externí odkaz:
http://arxiv.org/abs/2206.10873
Publikováno v:
Phys. Rev. Research 3, 043224 (2021)
The molecular solids $\beta^\prime$-$X$[Pd(dmit)$_2$]$_2$ (where $X$ represents a cation) are typical compounds whose electronic structures are described by single-orbital Hubbard-type Hamiltonians with geometrical frustration. Using the $ab$ $initio
Externí odkaz:
http://arxiv.org/abs/2109.10542
Autor:
Suzumura, Yoshikazu, Tsumuraya, Takao
Publikováno v:
J. Phys. Soc. Jpn. 90, 124707 (2021)
Effect of spin-orbit coupling (SOC) on Dirac electrons in the organic conductor $\alpha$-(BETS)$_2$I$_3$ [BETS = bis(ethylenedithio)tetraselenafulvalene] has been examined by calculating electric conductivity and spin magnetic susceptibility. A tight
Externí odkaz:
http://arxiv.org/abs/2107.09297
Publikováno v:
Phys. Rev. Research 3, 033215 (2021)
A class of Fe-Mn-Si-based alloys exhibits a reversible martensitic transformation between the $\gamma$ phase with a face-centered cubic~(fcc) structure and an $\epsilon$ phase with a hexagonal close-packed (hcp) structure. During the deformation-indu
Externí odkaz:
http://arxiv.org/abs/2010.07118
Autor:
Tsumuraya, Takao, Suzumura, Yoshikazu
Publikováno v:
Eur. Phys. J.l B, 94, 17 (2021)
We employed first-principles density-functional theory (DFT) calculations to characterize Dirac electrons in quasi-two-dimensional molecular conductor $\alpha$-(BETS)$_2$I$_3$ [= $\alpha$-(BEDT-TSeF)$_2$I$_3$] at a low temperature of 30K. We provide
Externí odkaz:
http://arxiv.org/abs/2006.11455