139 citations · 731 across the 22 of their papers we have counts for
22 papers
Competition between Geometrical Frustration and the Kondo Effect in CePdAl Revealed by High-Resolution Magnetization
Yusei Shimizu, Shota Nakamura, Yoichi Ikeda +4
CePdAl is a heavy-fermion compound with a quasi-kagome structure, where geometrical frustration competes with the Kondo effect. Using a high-sensitivity magnetometer, we observe cl…
Designing electronic magnetoelectric matter with organic quantum spin trimers
Yuko Hosokoshi, Christopher P. Aoyama, Zhuowei Zhang +17
Magnetoelectric (ME) phenomena are commonly driven by spin-lattice coupling. Here we demonstrate a different route based on frustrated quantum spin trimers that intrinsically inter…
Field-induced anomaly in the anisotropic non-Fermi-liquid normal state of UBe
Yusei Shimizu, Shunichiro Kittaka, Yohei Kono +6
We report the results of high-resolution dc magnetization and specific-heat measurements at very low temperatures for a single crystal \color{black} of UBe in magnetic field…
High-resolution magnetostriction measurements of the Pauli-limited superconductor Sr2RuO4
Shunichiro Kittaka, Yohei Kono, Toshiro Sakakibara +4
We performed high-resolution magnetostriction measurements on the Pauli-limited superconductor SrRuO using high-quality single crystals. A first-order superconducting trans…
Anisotropy of the magnetic-field-induced phase pocket in the non-Kramers doublet system PrIrZn
Shunichiro Kittaka, Takahiro Onimaru, Keisuke T. Matsumoto +1
We provide thermodynamic evidence for the presence of a magnetic-field-induced small phase pocket near the antiferro-quadrupole (AFQ) phase boundary in the non-Kramers double…
Kitaev Spin Liquid Candidate OsxCl3 Comprised of Honeycomb Nano-Domains
K. Kataoka, D. Hirai, T. Yajima +11
An osmium chloride with the chemical formula of OsxCl3 (x = 0.81) was synthesized and its crystal structure and thermodynamic properties were investigated. OsxCl3 crystallizes in a…
Pd NMR and NQR study of the cubic heavy fermion system CePdSi
Ivan Jakovac, Mladen Horvatić, Eike F. Schwier +5
We report Pd NMR and NQR measurements on a single crystal of CePdSi, where antiferroquadrupolar and antiferromagnetic orders develop at low temperature. From…
Anisotropic magnetic-field response of quantum critical fluctuations in Ni-doped CeCoIn5
M. Yokoyama, K. Suzuki, K. Tenya +4
This paper demonstrates the anisotropic response of quantum critical fluctuations with respect to the direction of the magnetic field in Ni-doped CeCoIn by measuring the ma…
Unconventional field-induced spin gap in an chiral staggered chain
J. Liu, S. Kittaka, R. D. Johnson +11
We investigate the low-temperature magnetic properties of the molecule-based chiral spin chain [Cu(pym)(HO)]SiFHO (pym = pyrimidine). Electron-spin resonance,…
Field-enhanced quantum fuctuation in S=1/2 frustrated square lattice
H. Yamaguchi, Y. Sasaki, T. Okubo +9
We present a new model compound with the S = 1/2 frustrated square lattice composed of the charge-transfer salt (o-MePy-V)PF6. Ab initio calculations indicate the formation of an S…
Quasi-one-dimensional Bose-Einstein Condensation in the Spin-1/2 Ferromagnetic-leg Ladder 3-I-V
Y. Kono, S. Kittaka, H. Yamaguchi +2
Quantum criticality of the spin-1/2 ferromagnetic-leg ladder 3-I-V [=3-(3-iodophenyl)-1,5-diphenylverdazyl] has been examined with respect to the antiferromagnetic to paramagnetic…
Emergent spin- Haldane gap and ferroelectricity in a frustrated spin- ladder
Hiroshi Ueda, Shigeki Onoda, Yasuhiro Yamaguchi +19
We report experimental and theoretical evidence that RbCuMoO has a nonmagnetic tetramer ground state of a two-leg ladder comprising antiferromagnetically coupled…
Quadrupole order in the frustrated pyrochlore magnet TbTiO
H. Takatsu, T. Taniguchi, S. Kittaka +2
We have studied the hidden long-range order (LRO) of the frustrated pyrochlore magnet TbTiO by means of specific-heat experiments and Monte-Carlo (MC) simulations, whic…
Pauli-limited superconductivity and antiferromagnetism in the heavy-fermion compound CeCo(In1-xZnx)5
M. Yokoyama, H. Mashiko, R. Otaka +10
We report on the anisotropic properties of Pauli-limited superconductivity (SC) and antiferromagnetism (AFM) in the solid solutions CeCo(In_{1-x}Zn_x)_5 (x<=0.07). In CeCo(In_{1-x}…
Thermal conductivity of quantum magnetic monopoles in the frustrated pyrochlore Yb2Ti2O7
Y. Tokiwa, T. Yamashita, M. Udagawa +8
We report low-temperature thermal conductivity of pyrochlore YbTiO, which contains frustrated spin-ice correlations with significant quantum fluctuations. In the di…
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…
Various regimes of quantum behavior in S = 1/2 Heisenberg antiferromagnetic chain with fourfold periodicity
H. Yamaguchi, T. Okubo, K. Iwase +7
We have succeeded in synthesizing single crystals of the verdazyl radical beta-2,6-Cl2-V [= beta-3-(2,6-dichlorophenyl)-1,5-diphenylverdazyl]. The ab initio MO calculation indicate…
Sign reversal of field-angle resolved heat capacity oscillations in a heavy fermion superconductor CeCoIn and pairing symmetry
K. An, T. Sakakibara, R. Settai +4
To identify the superconducting gap symmetry in CeCoIn5 (Tc=2.3 K), we performed angle-resolved specific heat (C_ϕ) measurements in a field rotated around the c-axis down to very l…
Field-angle-dependent specific heat measurements and gap determination of a heavy fermion superconductor URu2Si2
K. Yano, T. Sakakibara, T. Tayama +7
To identify the superconducting gap structure in URu2Si2 we perform field-angle-dependent specific heat measurements for the two principal orientations in addition to field rotatio…
Magentic-Field Induced Quantum Phase Transition and Critical Behavior in a Gapped Spin System TlCuCl
F. Yamada, T. Ono, M. Fujisawa +2
Magnetization measurements were performed on TlCuCl with gapped ground state. The critical density and the magnetic phase diagram were obtained. The interacting constant was ob…
Observation of Modulated Quadrupolar Structures in PrPb3
T. Onimaru, T. Sakakibara, N. Aso +3
Neutron diffraction measurements have been performed on the cubic compound PrPb3 in a [001] magnetic field to examine the quadrupolar ordering. Antiferromagnetic components with q=…
Field-angle Dependence of the Zero-Energy Density of States in the Unconventional Heavy-Fermion Superconductor CeCoIn5
H. Aoki, T. Sakakibara, H. Shishido +4
Field-angle dependent specific heat measurement has been done on the heavy-fermion superconductor CeCoIn5 down to ~ 0.29 K, in a magnetic field rotating in the tetragonal c-plane.…