TRANSPORT IN A ONE-CHANNEL LUTTINGER LIQUID
TRANSPORT IN A ONE-CHANNEL LUTTINGER LIQUID
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DOI：
10.1103/physrevlett.68.1220
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发表时间：
1992-02-24
影响因子：
8.6
通讯作者：
FISHER, MPA
中科院分区：
文献类型：
--
作者：
KANE, CL;FISHER, MPA
从理论上研究了单通道Luttinger液体通过弱连接的输运问题。对于排斥电子相互作用，即使是最小的散射体也会完全反射电子，导致真正绝缘的弱连接，与非相互作用电子形成鲜明对比。在有限温度（T）下，电导不为零，并被预测为T的幂。在T = 0的幂律电流-电压特性的预测。对于有吸引力的相互作用，人们认为卢廷格液体即使是最大的屏障也能完美地传输。费米液体铅的作用也进行了探讨。
We study theoretically the transport of a one-channel Luttinger liquid through a weak link. For repulsive electron interactions, the electrons are completely reflected by even the smallest scatterer, leading to a truly insulating weak link, in striking contrast to that for noninteracting electrons. At finite temperature (T) the conductance is nonzero, and is predicted to vanish as a power of T. At T = 0 power-law current-voltage characteristics are predicted. For attractive interactions, a Luttinger liquid is argued to be perfectly transmitted through even the largest of barriers. The role of Fermi-liquid leads is also explored.