Hidekazu Tanaka

activity

19992023

most citedMajorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid

878 citations · 4.9k across the 71 of their papers we have counts for

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65 papers · 1 filter

cond-mat.str-el2023★ 3 cited

Magnetic phase diagram in three-dimensional triangular-lattice antiferromagnet Sr $_{3}$ CoTa $_{2}$ O $_{9}$ with small easy-axis anisotropy

Iori Nishizawa, Nobuyuki Kurita, Hidekazu Tanaka +1

We report the results of low-temperature magnetization and specific heat measurements of Sr $_{3}$ CoTa $_{2}$ O $_{9}$ powder, in which Co $^{2 +}$ ions with effective spin-1/2 form a uniform…

cond-mat.str-el2022★ 8 cited

Field-orientation dependence of quantum phase transitions in the S=1/2 triangular-lattice antiferromagnet Ba $_{3}$ CoSb $_{2}$ O $_{9}$

Kazuki Okada, Hidekazu Tanaka, Nobuyuki Kurita +3

Ba $_{3}$ CoSb $_{2}$ O $_{9}$ approximates the two-dimensional spin-1/2 triangular-lattice Heisenberg antiferromagnet. This compound displays magnetic-field-induced quantum phase transitions…

cond-mat.str-el2022★ 10 cited

Contrasting Magnetic Structures in SrLaCuSbO $_{6}$ and SrLaCuNbO $_{6}$ : Spin-1/2 Quasi-Square-Lattice $J_{1} - J_{2}$ Heisenberg Antiferromagnets

Masari Watanabe, Nobuyuki Kurita, Hidekazu Tanaka +4

We report the magnetic properties of the double perovskites SrLaCuSbO $_{6}$ (SLCSO) and SrLaCuNbO $_{6}$ (SLCNO). The temperature dependence of the magnetic susceptibilities of both com…

cond-mat.str-el2022★ 24 cited

Possible Intermediate Quantum Spin Liquid Phase in $α$ -RuCl $_{3}$ under High Magnetic Fields up to 100 T

Xu-Guang Zhou, Han Li, Yasuhiro H. Matsuda +6

Pursuing the exotic quantum spin liquid (QSL) state in the Kitaev material $α$ -RuCl $_{3}$ has intrigued great research interest recently. A fascinating question is on the possible ex…

cond-mat.str-el2021★ 15 cited

Structures of magnetic excitations in the spin-1/2 kagome-lattice antiferromagnets Cs $_{2}$ Cu $_{3}$ SnF $_{12}$ and Rb $_{2}$ Cu $_{3}$ SnF $_{12}$

Mutsuki Saito, Ryunosuke Takagishi, Nobuyuki Kurita +6

We show the structures of magnetic excitations in spin-1/2 kagome-lattice antiferromagnets Cs $_{2}$ Cu $_{3}$ SnF $_{12}$ and Rb $_{2}$ Cu $_{3}$ SnF $_{12}$ investigated by inelastic neutron scatt…

cond-mat.str-el2021★ 10 cited

Magnons and Spinons in $Ba_{2} CoTeO_{6}$ : A Composite System of Isolated Spin- $1/2$ Triangular Heisenberg-like and Frustrated Honeycomb Ising-like Antiferromagnets

Yuki Kojima, Nobuyuki Kurita, Hidekazu Tanaka +1

We report the neutron scattering results on magnetic orderings and excitations in $Ba_{2} CoTeO_{6}$ composed of two almost isolated subsystems A and B, which are desc…

cond-mat.str-el2021★ 18 cited

Continuous control of classical-quantum crossover by external high pressure in the coupled chain compound CsCuCl $_{3}$

Daisuke Yamamoto, Takahiro Sakurai, Ryosuke Okuto +4

In solid materials, the parameters relevant to quantum effects, such as the spin quantum number, are basically determined and fixed at the chemical synthesis, which makes it challe…

cond-mat.str-el2021★ 7 cited

First ESR Detection of Higgs Amplitude Mode and Analysis with Extended Spin-Wave Theory in Dimer System KCuCl $_{3}$

Masashige Matsumoto, Takahiro Sakurai, Yuki Hirao +3

KCuCl $_{3}$ is known to show a quantum phase transition from the disordered to antiferromagnetically ordered phases by applying pressure. There is a longitudinal excitation mode (Hig…

cond-mat.str-el2020★ 2 cited

Coupled spin-1/2 antiferromagnetic chain Cs $_{2}$ LiRuCl $_{6}$ with partially disordered crystal lattice

Kazumitsu Watanabe, Nobuyuki Kurita, Hidekazu Tanaka +4

We determined the crystal structure of Cs $_{2}$ LiRuCl $_{6}$ , which was synthesized first in this work, and investigated its magnetic properties. Cs $_{2}$ LiRuCl $_{6}$ has a hexagonal struct…

cond-mat.str-el2019

Novel Excitations near Quantum Criticality in Geometrically Frustrated Antiferromagnet CsFeCl $_{3}$

Shohei Hayashida, Masashige Matsumoto, Masato Hagihala +7

Investigation of materials that exhibit quantum phase transition provides valuable insights into fundamental problems in physics. We present neutron scattering under pressure in a…

cond-mat.str-el2019★ 19 cited

Successive phase transitions and quantum magnetization plateau in the spin-1 triangular-lattice antiferromagnet Ba $_{2}$ La $_{2}$ NiTe $_{2}$ O $_{12}$

Mutsuki Saito, Masari Watanabe, Nobuyuki Kurita +5

The crystal structure and magnetic properties of the spin-1 triangular-lattice antiferromagnet Ba $_{2}$ La $_{2}$ NiTe $_{2}$ O $_{12}$ are reported. Its crystal structure is trigonal $R\bar{3…

cond-mat.str-el2018★ 25 cited

Triplon band splitting and topologically protected edge states in the dimerized antiferromagnet

Kazuhiro Nawa, Kimihiko Tanaka, Nobuyuki Kurita +6

The search for topological insulators has been actively promoted in the field of condensed matter physics for further development in energy-efficient information transmission and p…

cond-mat.str-el2018★ 32 cited

Valence-Bond-Glass State with Singlet Gap in the Spin-1/2 Square-Lattice Random $J_{1}$ - $J_{2}$ Heisenberg Antiferromagnet Sr $_{2}$ CuTe $_{1 - x}$ W $_{x}$ O $_{6}$

Masari Watanabe, Nobuyuki Kurita, Hidekazu Tanaka +3

The double-perovskite compounds Sr $_{2}$ CuTeO $_{6}$ and Sr $_{2}$ CuWO $_{6}$ are magnetically described as quasi-two-dimensional spin-1/2 square-lattice $J_{1} - J_{2}$ Heisenberg antiferromagne…

cond-mat.str-el2018★ 40 cited

Quantum magnetic properties of the spin-1/2 triangular-lattice antiferromagnet Ba $_{2}$ La $_{2}$ CoTe $_{2}$ O $_{12}$

Yuki Kojima, Masari Watanabe, Nobuyuki Kurita +4

We report the crystal structure of Ba $_{2}$ La $_{2}$ CoTe $_{2}$ O $_{12}$ determined by Rietveld analysis using X-ray powder diffraction data. It was found from magnetic measurements that Ba…

cond-mat.str-el2018★ 7 cited

Localized magnetic excitations in the fully frustrated dimerized magnet Ba $_{2}$ CoSi $_{2}$ O $_{6}$ Cl $_{2}$

Nobuyuki Kurita, Daisuke Yamamoto, Takuya Kanesaka +4

Magnetic excitations of the effective spin $S$ =1/2 dimerized magnet Ba $_{2}$ CoSi $_{2}$ O $_{6}$ Cl $_{2}$ have been probed directly via inelastic neutron scattering experiments at temperatures…

cond-mat.str-el2018★ 878 cited

Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid

Y. Kasahara, T. Ohnishi, Y. Mizukami +9

The quantum Hall effect (QHE) in two-dimensional (2D) electron gases, which is one of the most striking phenomena in condensed matter physics, involves the topologically protected…

cond-mat.str-el2018★ 15 cited

Local spin structure of the $α$ -RuCl $_{3}$ honeycomb-lattice magnet observed via muon spin rotation/relaxation

Ichihiro Yamauchi, Masatoshi Hiraishi, Hirotaka Okabe +5

We report a muon spin rotation/relaxation ( $μ$ SR) study of single-crystalline samples of the $α$ -RuCl $_{3}$ honeycomb magnet, which is presumed to be a model compound for the Kitaev-…

cond-mat.str-el2017★ 215 cited

Unusual thermal Hall effect in a Kitaev spin liquid candidate $α$ -RuCl $_{3}$

Y. Kasahara, K. Sugii, T. Ohnishi +8

The Kitaev quantum spin liquid displays the fractionalization of quantum spins into Majorana fermions. The emergent Majorana edge current is predicted to manifest itself in the for…

cond-mat.str-el2017★ 5 cited

Experimental Verification of the Universality of Magnetic-Field-Induced Bose-Einstein Condensation of Magnons

Kazuki Shirasawa, Nobuyuki Kurita, Hidekazu Tanaka

CsFeBr $_{3}$ is an $S = 1$ hexagonal antiferromagnet that has a singlet ground state owing to its large easy-plane single-ion anisotropy. The critical behavior of the magnetic-fi…

cond-mat.str-el2017★ 14 cited

Quasi-two-dimensional Bose-Einstein condensation of lattice bosons in spin-1/2 XXZ ferromagnet K $_{2}$ CuF $_{4}$

Satoshi Hirata, Nobuyuki Kurita, Motoki Yamada +1

K $_{2}$ CuF $_{4}$ is magnetically described as a spin-1/2, quasi-two-dimensional (2D), square-lattice XXZ ferromagnet with weak easy-plane anisotropy. The magnetic ordering for an appli…

cond-mat.str-el2016★ 77 cited

Magnetic thermal conductivity far above the Néel temperatures in the Kitaev-magnet candidate $α$ -RuCl $_{3}$

Daichi Hirobe, Masahiro Sato, Yuki Shiomi +2

We have investigated the longitudinal thermal conductivity of $α$ -RuCl $_{3}$ , the magnetic state of which is considered to be proximate to a Kitaev honeycomb model, along with the…

cond-mat.str-el2016★ 17 cited

Quasi-two-dimensional Bose-Einstein condensation of spin triplets in dimerized quantum magnet Ba $_{2}$ CuSi $_{2}$ O $_{6}$ Cl $_{2}$

Makiko Okada, Hidekazu Tanaka, Nobuyuki Kurita +9

We synthesized single crystals of composition Ba $_{2}$ CuSi $_{2}$ O $_{6}$ Cl $_{2}$ and investigated its quantum magnetic properties. The crystal structure is closely related to that of the qu…

cond-mat.str-el2016★ 36 cited

Magnetic-field- and pressure-induced quantum phase transition in CsFeCl $_{3}$ proved via magnetization measurement

Nobuyuki Kurita, Hidekazu Tanaka

We have performed magnetization measurements of the gapped quantum magnet CsFeCl $_{3}$ at temperatures ( $T$ ) down to 0.5\,K at ambient pressure and down to 1.8\,K at hydrostatic pres…

cond-mat.str-el2016★ 51 cited

Magnetic Structure of the $S = 1/2$ Quasi-Two-Dimensional Square-Lattice Heisenberg Antiferromagnet Sr $_{2}$ CuTeO $_{6}$

Tomoyuki Koga, Nobuyuki Kurita, Maxim Avdeev +3

The magnetic structure of the double perovskite compound Sr $_{2}$ CuTeO $_{6}$ was determined from neutron powder diffraction data. This material is magnetically described as an $S\,{=}\…

Magnetic phase diagram in three-dimensional triangular-lattice antiferromagnet Sr3​CoTa2​O9​ with small easy-axis anisotropy

Field-orientation dependence of quantum phase transitions in the S=1/2 triangular-lattice antiferromagnet Ba3​CoSb2​O9​

Contrasting Magnetic Structures in SrLaCuSbO6​ and SrLaCuNbO6​: Spin-1/2 Quasi-Square-Lattice J1​−J2​ Heisenberg Antiferromagnets

Possible Intermediate Quantum Spin Liquid Phase in α-RuCl3​ under High Magnetic Fields up to 100 T

Structures of magnetic excitations in the spin-1/2 kagome-lattice antiferromagnets Cs2​Cu3​SnF12​ and Rb2​Cu3​SnF12​

Magnons and Spinons in Ba2​CoTeO6​: A Composite System of Isolated Spin-1/2 Triangular Heisenberg-like and Frustrated Honeycomb Ising-like Antiferromagnets

Continuous control of classical-quantum crossover by external high pressure in the coupled chain compound CsCuCl3​

First ESR Detection of Higgs Amplitude Mode and Analysis with Extended Spin-Wave Theory in Dimer System KCuCl3​

Coupled spin-1/2 antiferromagnetic chain Cs2​LiRuCl6​ with partially disordered crystal lattice

Novel Excitations near Quantum Criticality in Geometrically Frustrated Antiferromagnet CsFeCl3​

Successive phase transitions and quantum magnetization plateau in the spin-1 triangular-lattice antiferromagnet Ba2​La2​NiTe2​O12​