Breakdown of Counterflow Superfluidity in a Disordered Quantum Hall Bilayer
Breakdown of Counterflow Superfluidity in a Disordered Quantum Hall Bilayer
复制标题
无序量子霍尔双层中逆流超流的分解
DOI:
10.1155/2011/792125
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发表时间:
2011
影响因子:
1.5
通讯作者:
Lee D
中科院分区:
文献类型:
--
作者:
Lee D
We present a theory for the regime of coherent interlayer tunneling in a disordered quantum Hall bilayer at total filling factor one, allowing for the effect of static vortices. We find that the system consists of domains of polarized superfluid phase. Injected currents introduce phase slips between the polarized domains which are pinned by disorder. We present a model of saturated tunneling domains that predicts a critical current for the breakdown of coherent tunneling that is extensive in the system size. This theory is supported by numerical results from a disordered phase model in two dimensions. We also discuss how our picture might be used to interpret experiments in the counterflow geometry and in two‐terminal measurements.
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通讯作者:
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DOI:
--
发表时间:
2008
期刊:
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