Orbital effect of a magnetic field on the low temperature state in the organic metal $α$-(BEDT-TTF)$_2$KHg(SCN)$_4$

Details Orbital effect of a magnetic field on the low temperature state in the organic metal $α$-(BEDT-TTF)$_2$KHg(SCN)$_4$ Orbital effect of a magnetic field on the low temperature state in the organic metal $α$-(BEDT-TTF)$_2$KHg(SCN)$_4$

2001-07-10

arxiv.org/abs/cond-mat/0107206v1

Phys. Rev. B, 64, 161104(R) (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 5 figures

Scientific paper

10.1103/PhysRevB.64.161104

The effect of pressure on the B--T phase diagram of $\alpha$-(BEDT-TTF)$_2$KHg(SCN)$_4$ is studied. The measured phase lines can be well described by a recent model of a charge-density wave system with varying nesting conditions. A remarkable increase of the transition temperature with magnetic field is found in a certain pressure and field range. We associate this result with a dramatic enhancement of the orbital effect of magnetic field due to a deterioration of the nesting conditions by pressure. Furthermore, we present data which can be interpreted as a first sign of field-induced charge-density waves.

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