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The Mixed State of Charge-Density-Wave in a Ring-Shaped Single Crystals

Masahiko Hayashi·Hiromichi Ebisawa·Kazuhiro Kuboki
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Abstract

Charge-density-wave (CDW) phase transition in a ring-shaped crystals, recently synthesized by Tanda et al. [Nature, 417, 397 (2002)], is studied based on a mean-field-approximation of Ginzburg-Landau free energy. It is shown that in a ring-shaped crystals CDW undergoes frustration due to the curvature (bending) of the ring (geometrical frustration) and, thus, forms a mixed state analogous to what a type-II superconductor forms under a magnetic field. We discuss the nature of the phase transition in the ring-CDW in relation to recent experiments.

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Masahiko Hayashi, Hiromichi Ebisawa, Kazuhiro Kuboki. 2007-03-05. The Mixed State of Charge-Density-Wave in a Ring-Shaped Single Crystals. https://doi.org/10.1103/physrevb.76.014303

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