Interacting two helical edge modes in quantum spin Hall systems

Details Interacting two helical edge modes in quantum spin Hall systems Interacting two helical edge modes in quantum spin Hall systems

2009-04-09

arxiv.org/abs/0904.1453v2

Physics

Condensed Matter

Superconductivity

Scientific paper

We study theoretically the two interacting one-dimensional helical modes at the edges of the quantum spin Hall systems. A new type of inter-edge correlated liquid (IECL) without the spin gap is found. This liquid shows the diverging density wave (DW) and superconductivity (SC) correlations much stronger than those of the spinfull electrons. Possible experimental observations are also discussed.

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