Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Ono, Seishiro"'
Topological superconductors and Majorana edge modes at their boundaries have been theoretically predicted. However, their experimental observation remains controversial. Recent theoretical studies suggest that chiral Majorana edge modes exhibit disti
Externí odkaz:
http://arxiv.org/abs/2411.09985
Theoretical prediction of topological superconductivity is key to their discovery. Recently, it is proved that in 199 out of 230 space groups, topological superconductivity coexists with an $s$-wave-like pairing symmetry, raising the hope of finding
Externí odkaz:
http://arxiv.org/abs/2407.20231
Publikováno v:
Phys. Rev. B 109, 085114 (2024)
In some insulators, corner charges are fractionally quantized, due to the topological invariant called a filling anomaly. The previous theories of fractional corner charges have been mostly limited to two-dimensional systems. In three dimensions, onl
Externí odkaz:
http://arxiv.org/abs/2311.15761
Autor:
Shiozaki, Ken, Ono, Seishiro
We compute the $E_2$ pages of the momentum-space and real-space Atiyah-Hirzebruch spectral sequence (AHSS) for topological crystalline insulators and superconductors up to three spatial dimensions, considering the cell decomposition in which if a gro
Externí odkaz:
http://arxiv.org/abs/2304.01827
Based on a recently developed framework, we conduct classifications of time-reversal symmetric topological superconductors with conventional pairing symmetries. Our real-space approach clarifies the nature of boundary modes in nontrivial phases. The
Externí odkaz:
http://arxiv.org/abs/2206.02489
Publikováno v:
Phys. Rev. Lett. 129, 027001 (2022)
The theory of symmetry indicators has enabled database searches for topological materials in normal conducting phases, which has led to several encyclopedic topological material databases. To date, such a database for topological superconductors is y
Externí odkaz:
http://arxiv.org/abs/2106.11985
Autor:
Shiozaki, Ken, Ono, Seishiro
Publikováno v:
Phys. Rev. B 104, 035424 (2021)
Recently, topological phases in non-Hermitian systems have attracted much attention because non-Hermiticity sometimes gives rise to unique phases with no Hermitian counterparts. Non-Hermitian Bloch Hamiltonians can always be mapped to doubled Hermiti
Externí odkaz:
http://arxiv.org/abs/2105.00677
Autor:
Ono, Seishiro, Shiozaki, Ken
Publikováno v:
Phys. Rev. X 12, 011021 (2022)
Determination of the symmetry property of superconducting gaps has been a central issue in studies to understand the mechanisms of unconventional superconductivity. Although it is often difficult to completely achieve the aforementioned goal, the exi
Externí odkaz:
http://arxiv.org/abs/2102.07676
Publikováno v:
Phys. Rev. Research 3, 023086 (2021)
While the symmetry-based diagnosis of topological insulators and semimetals has enabled large-scale discovery of topological materials candidates, the extension of these approaches to the diagnosis of topological superconductors remains a major open
Externí odkaz:
http://arxiv.org/abs/2008.05499
Autor:
Watanabe, Haruki, Ono, Seishiro
Publikováno v:
Phys. Rev. B 102, 165120 (2020)
A formula for the corner charge in terms of the bulk quadrupole moment is derived for two-dimensional periodic systems. This is an analog of the formula for the surface charge density in terms of the bulk polarization. In the presence of an $n$-fold
Externí odkaz:
http://arxiv.org/abs/2007.14932