Quantum critical phase in BaVS$_3$

N. Barišić; I. Kézsmárki; P. Fazekas; G. Mihály; H. Berger; L. Demkó; L. Forró

Quantum critical phase in BaVS$_3$

Strongly Correlated Electrons 2007-05-23 v1

Authors: N. Barišić , I. Kézsmárki , P. Fazekas , G. Mihály , H. Berger , L. Demkó , L. Forró

Abstract

We study the high-pressure metallic phase of high-purity single crystals of BaVS $_3$ by measuring the temperature, pressure, and magnetic field dependence of the resistivity. Above the critical pressure of $p_{\rm cr}=1.97$ GPa an extended non-Fermi liquid $p-T$ regime emerges with resistivity exponent $1.5 \le n<2$ , crossing over to a FL only around $p=2.7$ GPa. A hysteretic feature indicates that close to the insulator--metal boundary, the system is magnetically ordered. Our findings reveal a close analogy between the extended partially ordered NFL state of non-conventional itinerant magnets and the corresponding state of BaVS$_3

Keywords

high-pressure phase transitions ferroelectric magnetoresistance

Cite

@article{arxiv.cond-mat/0602262,
  title  = {Quantum critical phase in BaVS$_3$},
  author = {N. Barišić and I. Kézsmárki and P. Fazekas and G. Mihály and H. Berger and L. Demkó and L. Forró},
  journal= {arXiv preprint arXiv:cond-mat/0602262},
  year   = {2007}
}

Comments

4 pages, 3 figures, submitted to PRL

Quantum critical phase in BaVS$_3$

Abstract

Keywords

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