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

D. Andres·M. V. Kartsovnik·W. Biberacher·H. Weiss·E. Balthes·H. Müller·N. Kushch
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Abstract

The effect of pressure on the B--T phase diagram of $α$-(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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D. Andres, M. V. Kartsovnik, W. Biberacher, H. Weiss, E. Balthes, H. Müller, N. Kushch. 2001-07-10. Orbital effect of a magnetic field on the low temperature state in the organic metal $α$-(BEDT-TTF)$_2$KHg(SCN)$_4$. https://doi.org/10.1103/physrevb.64.161104

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