تقرير
Anomalous metallic state in the vicinity of Metal to Valence Bond Solid insulator transition in LiVS2
| العنوان: | Anomalous metallic state in the vicinity of Metal to Valence Bond Solid insulator transition in LiVS2 |
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| المؤلفون: | Katayama, N., Uchida, M., Hashizume, D., Niitaka, S., Matsuno, J., Matsumura, D., Nishihata, Y., Mizuki, J., Takeshita, N., Gauzzi, A., Nohara, M., Takagi, H. |
| سنة النشر: | 2009 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science |
| الوصف: | We investigate LiVS2 and LiVSe2 with a triangular lattice as itinerant analogues of LiVO2, known for the formation of valence bond solid (VBS) state out of S = 1 frustrated magnet. LiVS2, which is located at the border between a metal and a correlated insulator, shows a first ordered transition from a paramagnetic metal to a VBS insulator at Tc ~ 305 K upon cooling. The presence of VBS state in the close vicinity of insulator-metal transition may suggest the importance of itinerancy in the formation of VBS state. We argue that the high temperature metallic phase of LiVS2 has a pseudo-gap, likely originating from the VBS fluctuation. LiVSe2 was found to be a paramagnetic metal down to 2 K. Comment: 4 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.103.146405 |
| URL الوصول: | http://arxiv.org/abs/0908.1244 |
| رقم الأكسشن: | edsarx.0908.1244 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.103.146405 |
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