4 citations · 13 across the 11 of their papers we have counts for
11 papers
Weak localization in magnetic Euler bands
Doh Young Kim, Seung Hun Lee, Akira Furusaki +1
We study the quantum correction to the conductivity due to disorder in two-dimensional fragile topological bands with nonzero Euler class. Contrary to graphene where two Dirac node…
Majorana-assisted nonlocal spin correlation in quasi-one-dimensional Kitaev spin liquids
Yuki Yamazaki, Shingo Kobayashi, Akira Furusaki
We propose Majorana-assisted nonlocal spin correlation as a manifestation of Majorana nonlocality in quasi-one-dimensional (1D) Kitaev spin liquids. Focusing on the flux-free secto…
Symmetry-Enforced Nodal -Wave Magnets
Moritz M. Hirschmann, Akira Furusaki, Max Hirschberger
Owing to their relevance for spintronics, electronic band splitting and spin-polarization textures in magnets are active areas of research. In non-collinear magnets, alternating sp…
Spatiotemporal chaos in the interface growth of topological insulators
Yutaro Tanaka, Akira Furusaki
We demonstrate that topological insulators exhibit an intrinsic interfacial instability that amplifies small interface fluctuations, resulting in chaotic behavior during interface…
Euler band topology in superfluids and superconductors
Shingo Kobayashi, Manabu Sato, Akira Furusaki
Real band topology often appears in systems with space-time inversion symmetry and is characterized by invariants such as the Euler and second Stiefel-Whitney classes. Here, we exa…
Three-dimensional spinless Euler insulators with rotational symmetry
Manabu Sato, Shingo Kobayashi, Motoaki Hirayama +1
The Euler class is a -valued topological invariant that characterizes a pair of real bands in a two-dimensional Brillouin zone. One of the symmetries that permits its d…
Identification of gapless phases by a twisting operator
Hang Su, Tengzhou Zhang, Yuan Yao +1
We propose a general necessary condition for a spin chain with SO(3) spin-rotation symmetry to be gapped. Specifically, we prove that the ground state(s) of an SO(3)-symmetric gapp…
Representation-protected topology of spin-singlet -wave superconductors
Shingo Kobayashi, Akira Furusaki
We show that spin-singlet -wave multi-band superconductors have a topological phase protected by rotation symmetry and time-reversal symmetry without spin-orbit coupling in two…
Exact quantization of topological order parameter in SU() spin models, -ality transformation and ingappabilities
Hang Su, Yuan Yao, Akira Furusaki
We show that the ground-state expectation value of twisting operator is a topological order parameter for - and -symmetric symmetry-protected topologic…
Modulating Hamiltonian Approach to Quantum Many-Body Systems and Crystalline Topological Phases Protected by Generalized Magnetic Translations
Yuan Yao, Akira Furusaki
We discuss the topology of the parameter space of invertible phases with an onsite symmetry , i.e., quantum many-body ground states that have neither fractionalization nor spont…
Ideal Spin-Orbit-Free Dirac Semimetal and Diverse Topological Transitions in PrCoGa Family
Manabu Sato, Juba Bouaziz, Shuntaro Sumita +5
Topological semimetals, known for their intriguing properties arising from band degeneracies, have garnered significant attention. However, the discovery of a material realization…