论文标题
弱相互交互的bose气体的超流体正常状态连接中电流偏差特征的不对称和非线性
Asymmetry and nonlinearity of current-bias characteristics in superfluid-normal state junctions of weakly-interacting Bose gases
论文作者
论文摘要
我们发现具有弱相互作用的玻色气体的超流体正常状态连接的当前偏置特征。结果表明，在存在化学势偏见的情况下，特征对于原点可能是不对称的。费米尼克对应物中不存在的显着特征是由与冷凝物和玻璃剂Andreev反射过程相关的隧道过程。事实证明，这种过程本质上是非线性的，因此即使在低偏见下也不遵守欧姆的定律。此外，剩余的过程被发现遵守欧姆定律，并在温度偏差驱动的运输方面占主导地位。
We uncover current-bias characteristics of superfluid-normal state junctions with weakly-interacting Bose gases. It is shown that in the presence of a chemical potential bias the characteristics can strongly be asymmetric for origin. The salient feature that is absent in the fermionic counterpart arises from a tunneling process associated with a condensate and a bosonic Andreev reflection process. It turns out that such processes are intrinsically nonlinear and therefore do not obey Ohm's law even at a low bias. In addition, the remaining processes are found to obey Ohm's law and become dominant for transport driven by a temperature bias.
