Abstract
We investigate LiVS2 and LiVSe2 with a triangular lattice as itinerant analogues of LiVO2 known for the formation of a valence-bond solid (VBS) state out of an S=1 frustrated magnet. LiVS2, 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 Tc∼305K 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 LiVS2 has a pseudogap, likely originating from the VBS fluctuation. LiVSe2 was found to be a paramagnetic metal down to 2 K.
| Original language | English |
|---|---|
| Article number | 146405 |
| Journal | Physical Review Letters |
| Volume | 103 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - Oct 2 2009 |
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Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2. / Katayama, N.; Uchida, M.; Hashizume, D.; Niitaka, S.; Matsuno, J.; Matsumura, D.; Nishihata, Y.; Mizuki, J.; Takeshita, N.; Gauzzi, A.; Nohara, Minoru; Takagi, H.
In: Physical Review Letters, Vol. 103, No. 14, 146405, 02.10.2009.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2
AU - Katayama, N.
AU - Uchida, M.
AU - Hashizume, D.
AU - Niitaka, S.
AU - Matsuno, J.
AU - Matsumura, D.
AU - Nishihata, Y.
AU - Mizuki, J.
AU - Takeshita, N.
AU - Gauzzi, A.
AU - Nohara, Minoru
AU - Takagi, H.
PY - 2009/10/2
Y1 - 2009/10/2
N2 - We investigate LiVS2 and LiVSe2 with a triangular lattice as itinerant analogues of LiVO2 known for the formation of a valence-bond solid (VBS) state out of an S=1 frustrated magnet. LiVS2, 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 Tc∼305K 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 LiVS2 has a pseudogap, likely originating from the VBS fluctuation. LiVSe2 was found to be a paramagnetic metal down to 2 K.
AB - We investigate LiVS2 and LiVSe2 with a triangular lattice as itinerant analogues of LiVO2 known for the formation of a valence-bond solid (VBS) state out of an S=1 frustrated magnet. LiVS2, 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 Tc∼305K 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 LiVS2 has a pseudogap, likely originating from the VBS fluctuation. LiVSe2 was found to be a paramagnetic metal down to 2 K.
UR - http://www.scopus.com/inward/record.url?scp=70349907868&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349907868&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.103.146405
DO - 10.1103/PhysRevLett.103.146405
M3 - Article
AN - SCOPUS:70349907868
VL - 103
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 14
M1 - 146405
ER -