A. Koda

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20012026

most citedTime-Reversal Symmetry-Breaking Superconductivity in Heavy Fermion PrOs4Sb12 detected by Muon Spin Relaxation

306 citations · 1.3k across the 62 of their papers we have counts for

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26 papers · 1 filter

cond-mat.str-el2023★ 13 cited

Persistent spin dynamics in magnetically ordered honeycomb cobalt oxides

Ping Miao, Xianghong Jin, Weiliang Yao +7

In the quest to find quantum spin liquids, layered cobalt oxides Na2Co2TeO6 and Na3Co2SbO6 have been proposed as promising candidates for approximating the Kitaev honeycomb model.…

cond-mat.str-el2021★ 5 cited

Pyrochlore Oxide Hg2Os2O7 on Verge of Metal-Insulator Boundary

Kota Kataoka, Daigorou Hirai, Akihiro Koda +3

Semimetallic osmium pyrochlore oxide Cd2Os2O7 undergoes a magnetic transition to an all-in-all-out (AIAO)-type order at 227 K, followed by a crossover to an AIAO insulator at aroun…

cond-mat.str-el2021★ 12 cited

Dimensional reduction by geometrical frustration in a cubic antiferromagnet composed of tetrahedral clusters

Ryutaro Okuma, Maiko Kofu, Shinichiro Asai +10

Dimensionality is a critical factor in determining the properties of solids and is an apparent built-in character of the crystal structure. However, it can be an emergent and tunab…

cond-mat.str-el2020★ 4 cited

Magnetism behavior of $T^{'}$ -type Eu $_{2}$ CuO $_{4}$ revealed by muon spin rotation/relaxation measurements

M. Fujita, K. M. Suzuki, S. Asano +4

We performed muon spin rotation/relaxation measurements to investigate the magnetic behavior of $T^{'}$ -type Eu $_{2}$ CuO $_{4}$ (ECO), which is the parent compound of electron-dope…

cond-mat.str-el2020★ 7 cited

Muon Spin Relaxation and fluctuating magnetism in the pseudogap phase of YBa $_{2}$ Cu $_{3}$ O $_{y}$

Zihao Zhu, Jian Zhang, Zhaofeng Ding +16

We report results of a muon spin relaxation study of slow magnetic fluctuations in the pseudogap phase of underdoped single-crystalline YBa $_{2}$ Cu $_{3}$ O $_{y}$ , $y = 6.77$ and 6.8…

cond-mat.str-el2020★ 6 cited

Electronic charge transfer driven by spin cycloidal structure

Y. Ishii, S. Horio, Y. Noda +11

Muon spin rotation and resonant soft X-ray scattering experiments on prototype multiferroics RMn2O5 (R = Y, Sm) are used to demonstrate that the local electric displacements are dr…

cond-mat.str-el2020★ 34 cited

Extreme Suppression of Antiferromagnetic Order and Critical Scaling in a Two-Dimensional Random Quantum Magnet

Wenshan Hong, Lu Liu, Chang Liu +16

Sr $_{2}$ CuTeO $_{6}$ is a square-lattice Néel antiferromagnet with superexchange between first-neighbor $S = 1/2$ Cu spins mediated by plaquette centered Te ions. Substituting Te by W, th…

cond-mat.str-el2020★ 7 cited

Magnetism driven by strong electronic correlation in the heavily carrier-doped iron oxypnictide LaFeAsO $_{0.49}$ H $_{0.51}$

M. Hiraishi, K. M. Kojima, H. Okabe +7

The magnetism of the second antiferromagnetic phase (AF2) arising in the iron-based LaFeAsO $_{1 - x}$ H $_{x}$ superconductor for $x ≳ 0.4$ was investigated by muon spin rotation m…

cond-mat.str-el2020★ 7 cited

Origin of magnetovolume effect in a cobaltite

Ping Miao, Zhijian Tan, Sanghyun Lee +21

The layered perovskite PrBaCo2O5.5+x demonstrates a strong negative thermal expansion (NTE) which holds potential for being fabricated into composites with zero thermal expansion.…

cond-mat.str-el2019★ 10 cited

Unusual slow magnetic fluctuations and critical slowing down in Sr $_{2}$ Ir $_{1 - x}$ Rh $_{x}$ O $_{4}$

C. Tan, Z. F. Ding, J. Zhang +9

Hidden magnetic order of Sr $_{2}$ Ir $_{1 - x}$ Rh $_{x}$ O $_{4}$ , $x = 0.05$ and 0.1, has been studied using muon spin relaxation spectroscopy. In zero applied field and weak longitudinal fiel…

cond-mat.str-el2019★ 15 cited

Quantum magnetisms in uniform triangular lattices Li2AMo3O8 (A = In, Sc)

K. Iida, H. Yoshida, H. Okabe +8

Molecular based spin-1/2 triangular lattice systems such as LiZn $_{2}$ Mo $_{3}$ O $_{8}$ have attracted research interest. Distortions, defects, and intersite disorder are suppressed in suc…

cond-mat.str-el2019★ 1 cited

Successive magnetic ordering sequence observed from muon spin rotation in T'-structured R2CuO4 (R = Eu, Nd)

K. M. Suzuki, S. Asano, H. Okabe +4

The magnetic behavior and effects of oxygen-reduction annealing on the magnetism of T'-structured R2CuO4 (R = Eu and Nd), which is the parent compound of electron-doped cuprate sup…

cond-mat.str-el2018★ 11 cited

Metallic Spin Liquid-like Behavior of LiV $_{2}$ O $_{4}$

H. Okabe, M. Hiraishi, A. Koda +6

LiV $_{2}$ O $_{4}$ spinel is known to exhibit heavy fermion-like behavior below a characteristic temperature $T_{K} ≃ 20$ K, while it preserves a paramagnetic state down to $T\sim10^{-…

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★ 4 cited

Magnetic Properties of One-Dimensional Quantum Spin System Rb2Cu2Mo3O12 Studied by Muon Spin Relaxation

Seiko Ohira-Kawamura, Keisuke Tomiyasu, Akihiro Koda +5

Magnetic properties of a one-dimensional frustrated quantum spin system Rb2Cu2Mo3O12 is investigated by the muon spin relaxation (muSR) technique. Although this system shows an inc…

cond-mat.str-el2017★ 27 cited

Tomonaga-Luttinger spin liquid in the spin-1/2 inequilateral diamond-chain compound K $_{3}$ Cu $_{3}$ AlO $_{2}$ (SO $_{4}$ ) $_{4}$

M. Fujihala, H. Koorikawa, S. Mitsuda +14

K $_{3}$ Cu $_{3}$ AlO $_{2}$ (SO $_{4}$ ) $_{4}$ is a highly one-dimensional spin-1/2 inequilateral diamond-chain antiferromagnet. Spinon continuum and spin-singlet dimer excitations are observed in…

cond-mat.str-el2016★ 1 cited

Metal-Insulator Transition and Pseudogap in Bi $_{1.76}$ Pb $_{0.35}$ Sr $_{1.89}$ CuO $_{6 + δ}$ High- $T_{c}$ Cuprates

M. Miyazaki, R. Kadono, M. Hiraishi +6

It is inferred from bulk-sensitive muon Knight shift measurement for a Bi $_{1.76}$ Pb $_{0.35}$ Sr $_{1.89}$ CuO $_{6 + δ}$ single-layer cuprate that metal-insulator (MI) transition (in th…

cond-mat.str-el2015★ 11 cited

Structural anomalies and short-range magnetic correlations in the orbitally degenerated system Sr $_{2}$ VO $_{4}$

Ichihiro Yamauchi, Kazuhiro Nawa, Masatoshi Hiraishi +10

We report on the electronic ground state of a layered perovskite vanadium oxide Sr $_{2}$ VO $_{4}$ studied by the combined use of synchrotron radiation x-ray diffraction (SR-XRD) and muo…

cond-mat.str-el2015★ 20 cited

Evidence for ordered magnetic moments at oxygen sites in antiferromagnetic Sr $_{2}$ IrO $_{4}$ and Sr $_{3}$ Ir $_{2}$ O $_{7}$

M. Miyazaki, R. Kadono, M. Hiraishi +5

In this study, the magnetic ground state of iridium perovskites (Sr $_{n + 1}$ Ir $_{n}$ O $_{3 n + 1}$ , where $n = 1$ , 2, and $\infty$ ) was considered using muon spin spectroscopy ( $μ$ SR). Wh…

cond-mat.str-el2014★ 26 cited

Magnetic frustration in iridium spinel compound CuIr $_{2}$ S $_{4}$

K. M. Kojima, 2 R. Kadono, M. Miyazaki +6

We demonstrate via a muon spin rotation experiment that the electronic ground state of the iridium spinel compound, CuIr $_{2}$ S $_{4}$ , is not the presumed spin-singlet state but a nove…

cond-mat.str-el2012★ 5 cited

muSR Investigation of magnetically ordered states in A-site ordered perovskite manganites RBaMn2O6 (R = Y and La)

Y. Kawasaki, T. Minami, M. Izumi +9

The magnetically ordered states of the A-site ordered perovskite manganites LaBaMn2O6 and YBaMn2O6 have been investigated by muon spin relaxation in zero external magnetic field. O…

cond-mat.str-el2011★ 5 cited

Quasi-One-Dimensional Spin Dynamics in $d$ -Electron Heavy-Fermion Metal Y $_{1 - x}$ Sc $_{x}$ Mn $_{2}$

M. Miyazaki, R. Kadono, M. Hiraishi +6

Slow spin fluctuations ( $ν < 1 0^{12}$ s $^{-} 1$ ) observed by the muon spin relaxation technique in Y $_{1 - x}$ Sc $_{x}$ Mn $_{2}$ exhibits a power law dependence on temperature ( $ν \propto T^{α}$ )…

cond-mat.str-el2010★ 16 cited

Magnetic ground state of pyrochlore oxides close to metal-insulator boundary probed by muon spin rotation

M. Miyazaki, R. Kadono, K. H. Satoh +5

Magnetism of ruthernium pyrochlore oxides A2Ru2O7 (A = Hg, Cd, Ca), whose electronic properties within a localized ion picture are characterized by non-degenerate t2g orbitals (Ru5…

cond-mat.str-el2007★ 23 cited

Muon spin relaxation and hyperfine-enhanced 141Pr nuclear spin dynamic in Pr(Os,Ru)4Sb12 and (Pr,La)Os4Sb12

Lei Shu, D. E. MacLaughlin, Y. Aoki +20

Zero- and longitudinal-field muon spin relaxation (MuSR) experiments have been carried out in the alloy series Pr(Os1-xRux)4Sb12 and Pr1-yLayOs4Sb12 to elucidate the anomalous dyna…

Persistent spin dynamics in magnetically ordered honeycomb cobalt oxides

Pyrochlore Oxide Hg2Os2O7 on Verge of Metal-Insulator Boundary

Dimensional reduction by geometrical frustration in a cubic antiferromagnet composed of tetrahedral clusters

Magnetism behavior of T′-type Eu2​CuO4​ revealed by muon spin rotation/relaxation measurements

Muon Spin Relaxation and fluctuating magnetism in the pseudogap phase of YBa2​Cu3​Oy​

Electronic charge transfer driven by spin cycloidal structure

Extreme Suppression of Antiferromagnetic Order and Critical Scaling in a Two-Dimensional Random Quantum Magnet

Magnetism driven by strong electronic correlation in the heavily carrier-doped iron oxypnictide LaFeAsO0.49​H0.51​

Origin of magnetovolume effect in a cobaltite

Unusual slow magnetic fluctuations and critical slowing down in Sr2​Ir1−x​Rhx​O4​

Quantum magnetisms in uniform triangular lattices Li2AMo3O8 (A = In, Sc)

Successive magnetic ordering sequence observed from muon spin rotation in T'-structured R2CuO4 (R = Eu, Nd)

Metallic Spin Liquid-like Behavior of LiV2​O4​

Local spin structure of the α-RuCl3​ honeycomb-lattice magnet observed via muon spin rotation/relaxation

Magnetic Properties of One-Dimensional Quantum Spin System Rb2Cu2Mo3O12 Studied by Muon Spin Relaxation

Tomonaga-Luttinger spin liquid in the spin-1/2 inequilateral diamond-chain compound K3​Cu3​AlO2​(SO4​)4​

Metal-Insulator Transition and Pseudogap in Bi1.76​Pb0.35​Sr1.89​CuO6+δ​ High-Tc​ Cuprates

Structural anomalies and short-range magnetic correlations in the orbitally degenerated system Sr2​VO4​

Evidence for ordered magnetic moments at oxygen sites in antiferromagnetic Sr2​IrO4​ and Sr3​Ir2​O7​

Magnetic frustration in iridium spinel compound CuIr2​S4​

muSR Investigation of magnetically ordered states in A-site ordered perovskite manganites RBaMn2O6 (R = Y and La)

Quasi-One-Dimensional Spin Dynamics in d-Electron Heavy-Fermion Metal Y1−x​Scx​Mn2​

Magnetic ground state of pyrochlore oxides close to metal-insulator boundary probed by muon spin rotation

Muon spin relaxation and hyperfine-enhanced 141Pr nuclear spin dynamic in Pr(Os,Ru)4Sb12 and (Pr,La)Os4Sb12

Magnetism behavior of $T^{'}$ -type Eu $_{2}$ CuO $_{4}$ revealed by muon spin rotation/relaxation measurements

Muon Spin Relaxation and fluctuating magnetism in the pseudogap phase of YBa $_{2}$ Cu $_{3}$ O $_{y}$

Magnetism driven by strong electronic correlation in the heavily carrier-doped iron oxypnictide LaFeAsO $_{0.49}$ H $_{0.51}$

Unusual slow magnetic fluctuations and critical slowing down in Sr $_{2}$ Ir $_{1 - x}$ Rh $_{x}$ O $_{4}$

Metallic Spin Liquid-like Behavior of LiV $_{2}$ O $_{4}$

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

Tomonaga-Luttinger spin liquid in the spin-1/2 inequilateral diamond-chain compound K $_{3}$ Cu $_{3}$ AlO $_{2}$ (SO $_{4}$ ) $_{4}$

Metal-Insulator Transition and Pseudogap in Bi $_{1.76}$ Pb $_{0.35}$ Sr $_{1.89}$ CuO $_{6 + δ}$ High- $T_{c}$ Cuprates

Structural anomalies and short-range magnetic correlations in the orbitally degenerated system Sr $_{2}$ VO $_{4}$

Evidence for ordered magnetic moments at oxygen sites in antiferromagnetic Sr $_{2}$ IrO $_{4}$ and Sr $_{3}$ Ir $_{2}$ O $_{7}$

Magnetic frustration in iridium spinel compound CuIr $_{2}$ S $_{4}$

Quasi-One-Dimensional Spin Dynamics in $d$ -Electron Heavy-Fermion Metal Y $_{1 - x}$ Sc $_{x}$ Mn $_{2}$