Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Sumita, Shuntaro"'
We study the spatial profile of phonon angular momentum in a junction between a chiral crystal and a non-chiral (achiral) crystal with a smooth, flat contact at low temperatures. In this junction, the angular momentum is generated by an imbalance in
Externí odkaz:
http://arxiv.org/abs/2409.08874
Publikováno v:
Phys. Rev. B 110, L100403 (2024)
Spin parity effects refer to those special situations where a dichotomy in the physical behavior of a system arises, solely depending on whether the relevant spin quantum number is integral or half-odd integral. As is the case with the Haldane conjec
Externí odkaz:
http://arxiv.org/abs/2402.19311
Autor:
Sato, Manabu, Bouaziz, Juba, Sumita, Shuntaro, Kobayashi, Shingo, Tateishi, Ikuma, Blügel, Stefan, Furusaki, Akira, Hirayama, Motoaki
We propose from first-principles calculations that spin-orbit-free materials in the $RE_8\mathrm{Co}X_3$ group ($RE$ = rare earth elements, $X$ = Al, Ga, or In) are ideal spinless Dirac semimetals whose Fermi surfaces are fourfold degenerate band-cro
Externí odkaz:
http://arxiv.org/abs/2401.13930
The Stoner instability remains a cornerstone for understanding metallic ferromagnets. This instability captures the interplay of Coulomb repulsion, Pauli exclusion, and two-fold fermionic spin degeneracy. In materials with spin-orbit coupling, this f
Externí odkaz:
http://arxiv.org/abs/2310.00838
We theoretically investigate superconductivity under a spin-split band structure owing to a collinear-type antiferromagnetic order in quasi-two-dimensional organic compounds $\kappa$-(BEDT-TTF)$_2X$. We find that the magnetic order can induce a Fulde
Externí odkaz:
http://arxiv.org/abs/2308.14227
Vortex lines in superconducting Dirac semimetals realize crystal-symmetry-protected gapless vortex-line phases in which gapless excitations propagate inside a vortex line, in the presence of appropriate crystal symmetry, spin-orbit coupling, and mult
Externí odkaz:
http://arxiv.org/abs/2302.07451
Autor:
Sumita, Shuntaro, Takasan, Kazuaki
Publikováno v:
J. Phys. Soc. Jpn. 91, 074703 (2022)
We show that Weyl superconductivity can be induced by finite supercurrent in noncentrosymmetric spin-orbit-coupled superconductors with line nodes. We introduce a three-dimensional tight-binding model of a tetragonal superconductor in a $D+p$-wave pa
Externí odkaz:
http://arxiv.org/abs/2201.07397
We show that finite current in superconductors can induce topological phase transitions, as a result of the deformation of the quasiparticle spectrum by a finite center-of-mass (COM) momentum of the Cooper pairs. To show the wide applicability of thi
Externí odkaz:
http://arxiv.org/abs/2110.06959
Autor:
Sumita, Shuntaro
0048
甲第22236号
理博第4550号
新制||理||1654(附属図書館)
学位規則第4条第1項該当
Doctor of Science
Kyoto University
DFAM
甲第22236号
理博第4550号
新制||理||1654(附属図書館)
学位規則第4条第1項該当
Doctor of Science
Kyoto University
DFAM
Externí odkaz:
http://hdl.handle.net/2433/253071