Universal Field-Induced Charge-Density-Wave Phase Diagram: Theory versus Experiment

Details Universal Field-Induced Charge-Density-Wave Phase Diagram: Theory versus Experiment Universal Field-Induced Charge-Density-Wave Phase Diagram: Theory versus Experiment

2009-04-16

arxiv.org/abs/0904.2591v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 2 figures

Scientific paper

We suggest a theory of the Field-Induced Charge-Density-Wave (FICDW) phases, generated by high magnetic fields in quasi-low-dimensional conductors. We demonstrate that, in layered quasi-one-dimensional conductors, the corresponding critical magnetic fields ratios are universal and do not depend on any fitting parameter. In particular, we find that $H_1/H_0 = 0.73, \ H_2/H_0 = 0.59, H_3/H_0 = 0.49, H_4/H_0 = 0.42$, where $H_n$ is a critical field of a phase transition between the FICDW phases with numbers $n$ and $n+1$. The suggested theory is in very good qualitative and quantitative agreements with the existing experimental data in $\alpha$-(ET)$_2$KHg(SCN)$_4$ material.

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