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Mattan, K.*; Ono, Toshio*; Kawamura, Seiko; Nakajima, Kenji; Nambu, Yusuke*; Sato, Taku*
Physical Review B, 105(13), p.134403_1 - 134403_8, 2022/04
Times Cited Count:0 Percentile:0.01(Materials Science, Multidisciplinary)Spin dynamics of the spin-1/2 kagome-lattice antiferromagnet CsCu
SnF
was studied using high-resolution, time-of-flight inelastic neutron scattering. The flat mode, a characteristic of the frustrated kagome antiferromagnet, and the low-energy dispersive mode, which is dominated by magnons, can be well described by the linear spin-wave theory. However, the theory fails to describe three weakly dispersive modes between 9 and 14 meV. These modes could be attributed to two-spinon bound states, which decay into free spinons away from the zone center and at a high temperature, giving rise to continuum scattering.
Nambu, Yusuke*; Shamoto, Shinichi
Journal of the Physical Society of Japan, 90(8), p.081002_1 - 081002_15, 2021/08
Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)no abstracts in English
Ito, Shinichi*; Yokoo, Tetsuya*; Masuda, Takatsugu*; Yoshizawa, Hideki*; Soda, Minoru*; Ikeda, Yoichi*; Ibuka, Soshi*; Kawana, Daichi*; Sato, Taku*; Nambu, Yusuke*; et al.
JPS Conference Proceedings (Internet), 8, p.034001_1 - 034001_6, 2015/09
Xu, P. G.; Ojima, Mayumi*; Suzuki, Hiroshi; Nambu, Shoichi*; Inoue, Junya*; Onuki, Yusuke*; Harjo, S.; Akita, Koichi
no journal, ,
Fujita, Masaki*; Nambu, Yusuke*; Kawamura, Seiko; Kofu, Maiko; Nakajima, Kenji; Urlich, C.*; Sushkov, O. P.*
no journal, ,
no abstracts in English
Mori, Michiyasu; Fujita, Masaki*; Nambu, Yusuke*; Kawamura, Seiko; Kofu, Maiko; Nakajima, Kenji; Urlich, C.*; Sushkov, O. P.*
no journal, ,
no abstracts in English