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Exceptional rings in two-dimensional correlated systems with chiral symmetry
Tsuneya Yoshida, Robert Peters, Norio Kawakami +1
Emergence of exceptional points in two dimensions is one of the remarkable phenomena in non-Hermitian systems. We here elucidate the impacts of symmetry on the non-Hermitian physic…
Efficient method to compute -indices with glide symmetry and applications to Möbius materials, and
Tsuneya Yoshida, Akito Daido, Norio Kawakami +1
We propose an efficient method to numerically evaluate -indices of Möbius/hourglass topological phases with glide symmetry. Our method directly provides $\mathbb{Z}_4…
Non-Hermitian perspective of the band structure in heavy-fermion systems
Tsuneya Yoshida, Robert Peters, Norio Kawakami
We analyze a two-dimensional Kondo lattice model with special emphasis on non-Hermitian properties of the single-particle spectrum, following a recent proposal by Kozii and Fu. Our…
Magnetic states in a three-dimensional topological Kondo insulator
Robert Peters, Tsuneya Yoshida, Norio Kawakami
We theoretically study the magnetic phase diagram of a three-dimensional topological Kondo insulator by means of real-space dynamical mean field theory. We find that ferromagnetica…
Topological properties of magnetically ordered heavy-fermion systems in the presence of mirror symmetry
Kazuhiro Kimura, Tsuneya Yoshida, Norio Kawakami
We explore topological states with magnetic order in heavy-fermion systems by taking account of a mirror symmetry.Although without spatial symmetry, there is no topological phase i…
Topological Superconductivity in UCoGe
Akito Daido, Tsuneya Yoshida, Youichi Yanase
Topological nonsymmorphic crystalline superconductivity (TNCS) is an intriguing phase of matter, offering a platform to study the interplay between topology, superconductivity, and…