Field-induced charge-density-wave transitions in the organic metal $α$-(BEDT-TTF)$_2$KHg(SCN)$_4$ under hydrostatic pressure

Details Field-induced charge-density-wave transitions in the organic metal $α$-(BEDT-TTF)$_2$KHg(SCN)$_4$ under hydrostatic pressure Field-induced charge-density-wave transitions in the organic metal $α$-(BEDT-TTF)$_2$KHg(SCN)$_4$ under hydrostatic pressure

2008-01-17

arxiv.org/abs/0801.2696v1

Physics

Condensed Matter

Strongly Correlated Electrons

18 pages, 13 figures

Scientific paper

Successive magnetic-field-induced charge-density-wave transitions in the molecular conductor $\alpha$-(BEDT-TTF)$_2$KHg(SCN)$_4$ are studied in the hydrostatic pressure regime, in which the zero field charge-density wave (CDW)state is completely suppressed. The orbital effect of the magnetic field is demonstrated to restore the density wave, while the orbital quantization induces different CDW states in different field intervals. In particular, we have found that at certain field orientations the hysteretic first order transitions between field-induced CDW subphases become visible at much higher temperatures. This observation is very well in line with the existing theories of field-induced CDW transitions.

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