Pressure Induced Quantum Critical Point and Non-Fermi-Liquid Behavior in BaVS3

Details Pressure Induced Quantum Critical Point and Non-Fermi-Liquid Behavior in BaVS3 Pressure Induced Quantum Critical Point and Non-Fermi-Liquid Behavior in BaVS3

2000-01-25

arxiv.org/abs/cond-mat/0001371v2

Phys. Rev. Lett. 85, 1938 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 eps figures, problem with figure corrected

Scientific paper

10.1103/PhysRevLett.85.1938

The phase diagram of BaVS3 is studied under pressure using resistivity measurements. The temperature of the metal to nonmagnetic Mott insulator transition decreases under pressure, and vanishes at the quantum critical point p_cr=20kbar. We find two kinds of anomalous conducting states. The high-pressure metallic phase is a non-Fermi liquid described by Delta rho = T^n where n=1.2-1.3 at 1K < T < 60K. At p

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