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Journal Articles

Fabrication of neutron optical devices using PBW technique

Sakai, Takuro; Iikura, Hiroshi; Yamada, Naoto*; Sato, Takahiro*; Ishii, Yasuyuki*; Uchida, Masaya*

QST-M-8; QST Takasaki Annual Report 2016, P. 140, 2018/03

https://repo.qst.go.jp/records/73811

Journal Articles

Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS$$_{2}$$

Katayama, Naoyuki*; Uchida, Masaya*; Hashizume, Daisuke*; Niitaka, Seiji*; Matsuno, Jobu*; Matsumura, Daiju; Nishihata, Yasuo; Mizuki, Junichiro; Takeshita, Nao*; Gauzzi, A.*; et al.

Physical Review Letters, 103(14), p.146405_1 - 146405_4, 2009/10

https://doi.org/10.1103/PhysRevLett.103.146405
 Times Cited Count：59 Percentile：88.48(Physics, Multidisciplinary)

We investigate LiVS$$_{2}$$ and LiVSe$$_{2}$$ with a triangular lattice as itinerant analogues of LiVO$$_{2}$$ known for the formation of a valence-bond solid (VBS) state out of an S = 1 frustrated magnet. LiVS$$_{2}$$, which is located at the border between a metal and a correlated insulator, shows a first order transition from a paramagnetic metal to a VBS insulator at T$$_{c}$$ $$sim$$ 305 K upon cooling. The presence of a VBS state in the close vicinity of insulator-metal transition may suggest the importance of itinerancy in the formation of a VBS state. We argue that the high temperature metallic phase of LiVS$$_{2}$$ has a pseudogap, likely originating from the VBS fluctuation. LiVSe$$_{2}$$ was found to be a paramagnetic metal down to 2 K.

Oral presentation

Fabrication of novel neutron optical devices using proton microbeam

Sakai, Takuro; Iikura, Hiroshi; Matsubayashi, Masahito; Yamada, Naoto*; Sato, Takahiro*; Ishii, Yasuyuki*; Uchida, Masaya*

no journal, , 

no abstracts in English

Oral presentation

Fabrication of neutron fine gratings using in-air proton microbeam

Sakai, Takuro; Iikura, Hiroshi; Yamada, Naoto*; Sato, Takahiro*; Ishii, Yasuyuki*; Uchida, Masaya*

no journal, , 

no abstracts in English

Oral presentation

Fabrication of novel neutron optical devices using proton microbeam, 2

Sakai, Takuro; Iikura, Hiroshi; Yamada, Naoto*; Sato, Takahiro*; Ishii, Yasuyuki*; Uchida, Masaya*

no journal, , 

no abstracts in English

Oral presentation

Fabrication of novel neutron optical devices using proton microbeam, 3

Sakai, Takuro; Yamada, Naoto*; Sato, Takahiro*; Ishii, Yasuyuki*; Yamamoto, Shunya*; Uchida, Masaya*

no journal, , 

no abstracts in English

6 (Records 1-6 displayed on this page)
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