32 citations · 58 across the 12 of their papers we have counts for
12 papers
Nonlocal Kondo-exchange-driven intrinsic anomalous Hall effect in localized- antiferromagnetic metals
Akimitsu Kirikoshi, Junya Otsuki
The anomalous Hall effect in antiferromagnetic metals has attracted considerable attention. Most known realizations involve itinerant electrons that simultaneously mediate char…
Magneto-optical imaging of macroscopic altermagnetic domains in MnTe
Gakuto Watanabe, Soichiro Yamane, Ryotaro Maki +6
Altermagnets are a new class of magnets accompanying global time-reversal symmetry breaking (TRSB) without net magnetization. The TRSB results in formation of novel altermagnetic d…
Multipolar fluctuations from localized 4f electrons in CeRh2As2
Koki Numa, Eri Matsuda, Akimitsu Kirikoshi +1
The heavy-fermion superconductor CeRh2As2 exhibits a non-superconducting phase transition that precedes the emergence of superconductivity. The nature of the corresponding order pa…
Light-induced nonlinear Edelstein effect under ferroaxial ordering
Akimitsu Kirikoshi, Satoru Hayami
Ferroaxial ordering, a spontaneous rotational distortion of the atomic arrangement, brings about a cross-product-type spin-orbit coupling (SOC) manifested as an electric toroidal d…
From localized 4f electrons to anisotropic exchange interactions in ferromagnetic CeRh6Ge4
Shoichiro Itokazu, Akimitsu Kirikoshi, Harald O. Jeschke +1
CeRh6Ge4 is a cerium-based ferromagnetic material exhibiting a quantum critical behavior under pressure. We derive effective exchange interactions, using the framework of density f…
Finite- antiferrotoroidal and ferritoroidal order in a distorted kagome structure
Akimitsu Kirikoshi, Satoru Hayami
A highly geometrically frustrated lattice structure such as a distorted kagome (or quasikagome) structure enriches physical phenomena through coupling with the electronic structure…
Classification of multiorbital superconducting state based on augmented multipoles
Akimitsu Kirikoshi, Satoru Hayami
The pairing interactions between electrons play an essential role in determining the properties in superconducting states. Recently, a plethora of unconventional superconducting st…
Rotational Response Induced by Electric Toroidal Dipole
Akimitsu Kirikoshi, Satoru Hayami
A ferroaxial ordering, which appears without mirror symmetry parallel to an electric axial moment, is described by a ferroic alignment of the electric toroidal (ET) dipole rather t…
Microscopic mechanism for intrinsic nonlinear anomalous Hall conductivity in noncollinear antiferromagnetic metals
Akimitsu Kirikoshi, Satoru Hayami
We theoretically investigate an intrinsic nonlinear anomalous Hall effect (INAHE) in space-time () symmetric antiferromagnetic metals. The INAHE is characterized by a…
Variational Approach to Many-Body Problems Incorporating Many-Body Effects at Finite Temperature
Akimitsu Kirikoshi, Wataru Kohno, Takafumi Kita
We develop a variational approach at finite temperature that incorporates many-body correlation self-consistently. The grand potential is constructed in terms of Green's function e…
Variational Wave Function for Inhomogeneous Bose--Einstein Condensate with 3/2-Body Correlations
Wataru Kohno, Akimitsu Kirikoshi, Takafumi Kita
We construct a variational wave function for inhomogeneous weakly interacting Bose--Einstein condensates beyond the mean-field approximation by incorporating -body correlation…
Ground-State Wave Function with Interactions between Different Species in -Component Miscible Bose-Einstein Condensates
Wataru Kohno, Akimitsu Kirikoshi, Takafumi Kita
We construct a variational ground-state wave function of weakly interacting M-component Bose-Einstein condensates beyond the mean-field theory by incorporating the dynamical 3/2-bo…