期刊
PHYSICAL REVIEW LETTERS
卷 104, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.226405
关键词
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资金
- KAKENHI [17071003, 19052008, 21740242, 21340090]
- Global COE Program
- MEXT, Japan
- Grants-in-Aid for Scientific Research [21340090, 21740242, 19052008] Funding Source: KAKEN
An exact solution is obtained for a model of itinerant electrons coupled to ice-rule variables on the tetrahedron Husimi cactus, an analogue of the Bethe lattice of corner-sharing tetrahedra. It reveals a quantum critical point with the emergence of non-Fermi-liquid behavior in melting of the charge ice insulator. The electronic structure is compared with the numerical results for the pyrochlore-lattice model to elucidate the physics of electron systems interacting with the tetrahedron ice rule.
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