两个量子窄区串联时的绝热输运和欧姆输运

ADIABATIC TRANSPORT AND OHMIC TRANSPORT OF NARROW CONSTRICTIONS IN SERIES

利用Landauer公式的多通道推广形式,研究了两个不相等的量子窄区在串联情形下的绝热输运和欧姆输运。这两个窄区以一个密闭的空腔相连接,计算结果表明绝热输运导致窄区电阻的非相加性,而非绝热输运服从欧姆相加规则。这与实验定性一致。

Using the multi-channel generalization of Landauer formula, we investigate the adiaba-tic transport and the Ohmic transport of two unequal narrow constrictions in series with a closed cavity in between. It is shown that the adiabatic transmission leads to the nonadditivity of constriction's resistances, and the completely incoherent transport obeys the Ohmic addition rule.