588 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of OsakaJP141 papers
- The University of TokyoJP58 papers
- Nagoya UniversityJP42 papers
- Kyoto UniversityJP39 papers
- National Astronomical Observatory of JapanJP33 papers
- University of Wisconsin–MadisonUS27 papers
- University of GenevaCH25 papers
- Tokyo Metropolitan UniversityJP24 papers
- University of MichiganUS24 papers
- Centre National de la Recherche ScientifiqueFR23 papers
- Institute of Space and Astronautical ScienceJP23 papers
- Japan Aerospace Exploration AgencyJP23 papers
14 papers · 1 filter
Triple- collinear state with compensated ferrimagnetic nature on frustrated kagome lattice
Kazushi Aoyama, Hikaru Kawamura
Spin-selective band splitting without net magnetization and spin-orbit couplings serves for a next-generation spin-current generator, and its typical platforms are altermagnets and…
Effects of frequency mixing on Shapiro-step formations in sliding charge-density-waves
Yu Funami, Kazushi Aoyama
A one-dimensional charge density wave (CDW) is driven to slide by a dc electric field, carrying an electric current. In an additional ac field with frequency , it…
Fractal and subharmonic responses driven by surface acoustic waves during charge density wave sliding
Yu Funami, Kazushi Aoyama
We theoretically investigate the effects of surface acoustic waves (SAWs) on an electric-field-driven sliding motion of a one-dimensional charge density wave (CDW), which is initia…
Spin and thermal transport and critical phenomena in three-dimensional antiferromagnets
Kazushi Aoyama
We investigate spin and thermal transport near the Néel transition temperature in three dimensions, by numerically analyzing the classical antiferromagnetic model on th…
Hedgehog lattice and field-induced chirality in breathing-pyrochlore Heisenberg antiferromagnets
Kazushi Aoyama, Hikaru Kawamura
We theoretically investigate a - classical Heisenberg model on the breathing pyrochlore lattice, where the nearest-neighbor (NN) exchange interactions for small and large…
Emergent skyrmion-based chiral order in zero-field Heisenberg antiferromagnets on the breathing kagome lattice
Kazushi Aoyama, Hikaru Kawamura
We show that classical Heisenberg antiferromagnets on the breathing kagome lattice can be a platform to realize a zero-field topological order of the scalar spin chirality which ca…
Observation of topological vortex fluctuations in the frustrated Heisenberg magnet NaCrO
K. Tomiyasu, Y. P. Mizuta, M. Matsuura +2
Spin fluctuations in the triangular-lattice Heisenberg antiferromagnet NaCrO are investigated by means of quasi-elastic neutron scattering with high energy resolution and wide…
Effects of spin-lattice coupling and a magnetic field in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice
Kazushi Aoyama, Masaki Gen, Hikaru Kawamura
We theoretically investigate spin-lattice coupling (SLC) effects on the in-field ordering properties of classical Heisenberg antiferromagnets on the breathing pyrochlore lattice. H…
Hedgehog-lattice spin texture in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice
Kazushi Aoyama, Hikaru Kawamura
The hedgehog lattice, a three-dimensional periodic array of magnetic monopoles and antimonopoles, is known to be realized in the presence of the Dzyaloshinskii-Moriya (DM) interact…
Spin ordering induced by lattice distortions in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice
Kazushi Aoyama, Hikaru Kawamura
We theoretically investigate effects of lattice distortions on the spin ordering of classical Heisenberg antiferromagnets on the breathing pyrochlore lattice. In the model, local l…
= 1/2 ferromagnetic-antiferromagnetic alternating Heisenberg chain in a zinc-verdazyl complex
Hironori Yamaguchi, Yasuhiro Shinpuku, Tokuro Shimokawa +6
We successfully synthesized the zinc-verdazyl complex [Zn(hfac)](-Py-V) [hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate; -Py-V = 3-(2-pyridyl)-1,5-diphenylverdazyl],…
Field-induced incommensurate phase in the strong-rung spin ladder with ferromagnetic legs
H. Yamaguchi, H. Miyagai, M. Yoshida +12
We report magnetization, specific heat, and NMR measurements of 3-Br-4-F-V [=3-(3-bromo-4-fluorophenyl)-1,5-diphenylverdazyl], a strong-rung S=1/2 Heisenberg spin ladder with ferro…
Field-Induced Ferromagnetic Order and Colossal Magnetoresistance in La_{1.2}Sr_{1.8}Mn_2O_7: a ^{139}La NMR study
Y. Shiotani, J. L. Sarrao, Guo-qing Zheng
In order to gain insights into the origin of colossal magneto-resistance (CMR) in manganese oxides, we performed a ^{139}La NMR study in the double-layered compound La_{1.2}Sr_{1.8…
Spin Fluctuation in Heavy Fermion CeRu_2Si_2
Hiroaki Kadowaki, Masugu Sato, Shuzo Kawarazaki
Spin fluctuations of the archetypal heavy-fermion compound CeRu_2Si_2 have been investigated by neutron scattering in an entire irreducible Brillouin zone. The dynamical susceptibi…