Superconductor/Insulator Transition in the Striped Phase

Yu. Dimashko; C. Morais Smith

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arXiv · cond-mat/9805027

Superconductor/Insulator Transition in the Striped Phase

Yu. Dimashko·C. Morais Smith

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Abstract

We study the transversal dynamics of a charged stripe (quantum string) at $T = 0$ and show that its kink excitations play the role of current carriers. If the hopping amplitude $t$ is much smaller than the string tension $J$, the string is pinned and its ground state (GS) is insulating. At $t \gg J$, the string is depinned and the GS is a kink-condensate. By mapping the system onto a Josephson junction chain, we show that this state is superconducting. At $(t/J)_c = 2 / π^2 $ the kink/antikink pairs decouple and a Kosterlitz-Thouless like insulator-superconductor transition occurs.

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BibTeX RIS

Yu. Dimashko, C. Morais Smith. 1998-05-04. Superconductor/Insulator Transition in the Striped Phase. https://arxiv.org/abs/cond-mat/9805027

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