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Journal Articles

Magnetic boson peak in classical spin glasses

Kofu, Maiko; Kawamura, Seiko; Murai, Naoki; Ishii, Rieko*; Hirai, Daigoro*; Arima, Hiroshi*; Funakoshi, Kenichi*

Physical Review Research (Internet), 6(1), p.013006_1 - 013006_9, 2024/01

https://doi.org/10.1103/PhysRevResearch.6.013006

Journal Articles

Bound spinon excitations in the spin-$$frac{1}{2}$$ anisotropic triangular antiferromagnet Ca$$_{3}$$ReO$$_{5}$$Cl$$_{2}$$

Nawa, Kazuhiro*; Hirai, Daigoro*; Kofu, Maiko; Nakajima, Kenji; Murasaki, Ryo*; Kogane, Satoshi*; Kimata, Motoi*; Nojiri, Hiroyuki*; Hiroi, Zenji*; Sato, Taku*

Physical Review Research (Internet), 2(4), p.043121_1 - 043121_11, 2020/12

https://doi.org/10.1103/PhysRevResearch.2.043121

The spin excitations of the $$S$$ = $$frac{1}{2}$$ anisotropic triangular antiferromagnet Ca$$_{3}$$ReO$$_{5}$$Cl$$_{2}$$ were investigated by inelastic neutron-scattering experiments. The spin excitation spectrum exhibits sharp dispersive modes in addition to a spinonlike continuum. The consistency with the simulated spectrum based on the random-phase approximation is better for Ca$$_{3}$$ReO$$_{5}$$Cl$$_{2}$$ than for Cs$$_{2}$$CuCl$$_{4}$$, indicating that the spin system in the former remains closer to a Tomonaga-Luttinger liquidlike disordered state.

Oral presentation

Vibronic bound states in anti-ferromagnet CeAs observed by ARPES, inelastic X-ray scattering spectroscopy, and laser Raman scattering spectroscopy

Arai, Yosuke*; Kuroda, Kenta*; Tsutsui, Satoshi*; Hirai, Daigoro*; Katayama, N.*; Nomoto, Takuya*; Shin, S.*; Kubota, Masato; Haga, Yoshinori; Suzuki, Hiroyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Localized magnetic excitations in spin glasses observed by neutron scattering

Kofu, Maiko; Kawamura, Seiko; Murai, Naoki; Ishii, Rieko*; Hirai, Daigoro*; Arima, Hiroshi*; Funakoshi, Kenichi*

no journal, , 

no abstracts in English

Oral presentation

Study of crystal field-phonon binding in CeAs by inelastic X-ray scattering

Arai, Yosuke*; Kuroda, Kenta*; Tsutsui, Satoshi*; Hirai, Daigoro*; Katayama, Wago*; Shin, S.*; Kubota, Masato; Nomoto, Takuya*; Suzuki, Hiroyuki*; Miyasaka, Shigeki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Temperature dependence of the electronic structure in low-carrier semi-metal CeAs revealed by angle-resolved photoemission spectroscopy

Arai, Yosuke*; Kuroda, Kenta*; Nomoto, Takuya*; Hirai, Daigoro*; Katayama, Wago*; Tsutsui, Satoshi*; Tanaka, Hiroaki*; Arita, Masashi*; Shin, S.*; Kubota, Masato; et al.

no journal, , 

no abstracts in English

Oral presentation

Neutron scattering study of spin dynamics in spin glasses

Kofu, Maiko; Yamamuro, Osamu*; Watanuki, Ryuta*; Sakakibara, Toshiro*; Kawamura, Seiko; Murai, Naoki; Nakajima, Kenji; Matsuura, Masato*; Ueki, Takeshi*; Akutsu, Kazuhiro*; et al.

no journal, , 

no abstracts in English

Oral presentation

Systematic change of strongly correlated mechanism in low carrier system semimetal CeX

Arai, Yosuke*; Kuroda, Kenta*; Tsutsui, Satoshi*; Hirai, Daigoro*; Tanaka, Hiroaki*; Yuyang, D.*; Iwata, Takuma*; Katayama, Kazu*; Shin, S.*; Kubota, Masato; et al.

no journal, , 

no abstracts in English

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