M. Ochi

activity

20152023

most citedLarge Enhancement of Thermoelectric Efficiency Due to a Pressure-Induced Lifshitz Transition in SnSe

75 citations · 234 across the 12 of their papers we have counts for

collaborators

Showing 2018Show all

7 papers · 1 filter

cond-mat.mtrl-sci2018

Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO $_{2}$

Hidetomo Usui, Masayuki Ochi, Sota Kitamura +8

We study the electronic structure of delafossite PtCoO $_{2}$ to elucidate its extremely small resistivity and high mobility. The band exhibits steep dispersion near the Fermi level d…

cond-mat.mtrl-sci2018

Pressure-induced Insulator to Metal Transition of Mixed Valence Compound Ce(O,F)SbS $_{2}$

Ryo Matsumoto, Masanori Nagao, Masayuki Ochi +11

Transport properties of Ce $_{0.85}$ F0.15SbS $_{2}$ and undoped CeOSbS $_{2}$ under high pressure were investigated experimentally and theoretically. Electrical resistivity measuremen…

cond-mat.str-el2018

Impact of antiferromagnetic order on Landau level splitting of quasi-two-dimensional Dirac fermions in EuMnBi $_{2}$

H. Masuda, H. Sakai, M. Tokunaga +7

We report spin-split Landau levels of quasi-two-dimensional Dirac fermions in a layered antiferromagnet EuMnBi $_{2}$ , as revealed by interlayer resistivity measurements in a tilted m…

cond-mat.mtrl-sci2018

Thermoelectric performance of materials with Cu $C h_{4}$ ( $C h =$ S, Se) tetrahedra: Similarities and differences among their low-dimensional electronic structure from first principles

Masayuki Ochi, Hitoshi Mori, Daichi Kato +2

In this study, we perform a comparative theoretical study on the thermoelectric performance of materials with Cu $C h_{4}$ ( $C h =$ S, Se) tetrahedra, including famous thermoelectric mat…

cond-mat.str-el2018

Possible correlated insulating states in magic-angle twisted bilayer graphene under strongly competing interactions

Masayuki Ochi, Mikito Koshino, Kazuhiko Kuroki

We investigate correlated insulating states in magic-angle twisted bilayer graphene (TBG) by the exact diagonalization method applied to the extended Hubbard model with interaction…

cond-mat.mes-hall2018

Maximally-localized Wannier orbitals and the extended Hubbard model for the twisted bilayer graphene

Mikito Koshino, Noah F. Q. Yuan, Takashi Koretsune +3

We develop an effective extended Hubbard model to describe the low-energy electronic properties of the twisted bilayer graphene. By using the Bloch states in the effective continuu…

Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO2​

Pressure-induced Insulator to Metal Transition of Mixed Valence Compound Ce(O,F)SbS2​

Impact of antiferromagnetic order on Landau level splitting of quasi-two-dimensional Dirac fermions in EuMnBi2​

Thermoelectric performance of materials with CuCh4​ (Ch= S, Se) tetrahedra: Similarities and differences among their low-dimensional electronic structure from first principles

Possible correlated insulating states in magic-angle twisted bilayer graphene under strongly competing interactions

Maximally-localized Wannier orbitals and the extended Hubbard model for the twisted bilayer graphene

Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO $_{2}$

Pressure-induced Insulator to Metal Transition of Mixed Valence Compound Ce(O,F)SbS $_{2}$

Impact of antiferromagnetic order on Landau level splitting of quasi-two-dimensional Dirac fermions in EuMnBi $_{2}$

Thermoelectric performance of materials with Cu $C h_{4}$ ( $C h =$ S, Se) tetrahedra: Similarities and differences among their low-dimensional electronic structure from first principles