294 citations · 1.4k across the 24 of their papers we have counts for
13 papers · 1 filter
Zero-field current-induced Hall effect in ferrotoroidic metal
K. Ota, M. Shimozawa, T. Muroya +7
We have performed precise Hall measurements for the ferrotoroidic candidate material UNi4B. Below Neel temperature TN ~ 20 K (corresponding to the ferrotoroidic transition temperat…
Thermal Hall Effects of Spins and Phonons in Kagome Antiferromagnet Cd-Kapellasite
Masatoshi Akazawa, Masaaki Shimozawa, Shunichiro Kittaka +7
We have investigated the thermal-transport properties of the kagome antiferromagnet Cd-kapellasite (Cd-K). We find that a field suppression effect on the longitudinal thermal condu…
Ultralow temperature NMR of CeCoIn
M. Yamashita, M. Tashiro, K. Saiki +7
We have performed Co NMR measurements of CeCoIn down to ultralow temperatures. We find that the temperature dependence of the spin-echo intensity provides a good measure…
Anomalous thermal Hall effect in the topological antiferromagnetic state
Kaori Sugii, Yusuke Imai, Masaaki Shimozawa +8
The anomalous Hall effect (AHE), a Hall signal occurring without an external magnetic field, is one of the most significant phenomena. However, understanding the AHE mechanism has…
Spin Thermal Hall Conductivity of a Kagomé Antiferromagnet
Hayato Doki, Masatoshi Akazawa, Hyun-Yong Lee +7
A clear thermal Hall signal () was observed in the spin liquid phase of the kagomé antiferromagnet Ca kapellasite (CaCu(OH)ClHO). We found…
Anomalous change in the de Haas-van Alphen oscillations of CeCoIn at ultra-low temperatures
Hiroaki Shishido, Shogo Yamada, Kaori Sugii +3
We have performed de Haas-van Alphen (dHvA) measurements of the heavy-fermion superconductor CeCoIn down to 2 mK above the upper critical field. We find that the dHvA amplitude…
Unusual thermal Hall effect in a Kitaev spin liquid candidate -RuCl
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…
Quantum-disordered state of magnetic and electric dipoles in a hydrogen-bonded Mott system
M. Shimozawa, K. Hashimoto, A. Ueda +12
Strongly enhanced quantum fluctuations often lead to a rich variety of quantum-disordered states. A representative case is liquid helium, in which zero-point vibrations of the heli…
Thermal Hall effect in a phonon-glass BaCuSbO
Kaori Sugii, Masaaki Shimozawa, Daiki Watanabe +6
A distinct thermal Hall signal is observed in a quantum spin liquid candidate BaCuSbO. The transverse thermal conduction shows a power-law temperature dependence below…
Emergence of nontrivial magnetic excitations in a spin liquid state of kagome volborthite
Daiki Watanabe, Kaori Sugii, Masaaki Shimozawa +7
When quantum fluctuations destroy underlying long-range ordered states, novel quantum states emerge. Spin-liquid (SL) states of frustrated quantum antiferromagnets, in which highly…
Tuning of magnetic quantum criticality in artificial Kondo superlattice CeRhIn5/YbRhIn5
T. Ishii, R. Toda, Y. Hanaoka +8
The effects of reduced dimensions and the interfaces on antiferromagnetic quantum criticality are studied in epitaxial Kondo superlattices, with alternating layers of heavy-fer…
Charge Carrier Dynamics of the Heavy Fermion Metal CeCoIn Probed by THz Spectroscopy
Uwe S. Pracht, Julian Simmendinger, Martin Dressel +8
We discuss the charge carrier dynamics of the heavy-fermion compound CeCoIn in the metallic regime measured by means of quasi-optical THz spectroscopy. The transmittance of ele…
The interface between heavy fermions and normal electrons investigated by spatially-resolved nuclear magnetic resonance
Takayoshi Yamanaka, Masaaki Shimozawa, Ryota Endo +6
We have studied the superlattices with alternating block layers (BLs) of heavy-fermion superconductor CeCoIn5 and conventional-metal YbCoIn5 by site-selective nuclear magnetic reso…