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182 papers
Topological superconductors and Majorana fermions based on -wave magnets with
Motohiko Ezawa
We study superconductors coupled with -wave magnets with . They are essentially different between altermagnets with and odd-parity magnets due to…
Observation of g-wave altermagnetic multipole
Ryo Misawa, Rikuto Oiwa, Shunsuke Kitou +16
Over the past few years, altermagnets have emerged as a new class of collinear magnets with broken time-reversal symmetry, offering novel opportunities for spintronics beyond conve…
Magnetization induced by a nonlinear response to temperature gradient in , and altermagnets
Motohiko Ezawa
It is a highly nontrivial question whether magnetization is induced by a nonlinear response to a temperature gradient in systems where the linear response is forbidden by inversion…
Fourth-order and six-order nonlinear spin current rectifier in three-dimensional -wave and -wave odd-parity magnet
Motohiko Ezawa
Higher-order symmetric -wave magnets consist of two groups. One includes -wave, -wave and -wave altermagnets, while the other includes -wave and -wave odd-parity…
Spin-selective elliptic optical dichroism and perfectly spin-polarized third-order nonlinear photocurrent in altermagnets
Motohiko Ezawa
We show that the low-energy theory of a -wave altermagnet is characterized by anisotropic Dirac cones with spin-split band structures based on a recently proposed tight-binding…
Non-Clifford symmetry protected topological hyper-cluster states and multi-qubit universal measurement-based quantum computation
Motohiko Ezawa
A cluster state is a highly entangled quantum state that serves as a universal resource for measurement-based quantum computation. It is generated by applying controlled-Z (CZ) gat…