Dirac fermions and conductance oscillations in s- and d-wave superconductor-graphene junctions.
Dirac fermions and conductance oscillations in s- and d-wave superconductor-graphene junctions.
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DOI：
10.1103/physrevlett.99.147001
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发表时间：
2007-07
影响因子：
8.6
通讯作者：
J. Linder;A. Sudbø
中科院分区：
文献类型：
--
作者：
J. Linder;A. Sudbø
我们研究了正常超导体石墨烯异质结构中的量子输运，包括超导区域中各向异性配对势的可能性。我们发现，在某些情况下，电导显示出一个无阻尼的，振荡的行为作为施加的偏置电压的函数。此外，我们研究电导谱的d-波配对对称性的影响。这些结果结合了联合收割机不寻常的特点，电子结构的石墨烯与非传统的配对对称性，例如在高温超导体。
We investigate quantum transport in a normal-superconductor graphene heterostructure, including the possibility of an anisotropic pairing potential in the superconducting region. We find that under certain circumstances, the conductance displays an undamped, oscillatory behavior as a function of applied bias voltage. Also, we investigate how the conductance spectra are affected by a d-wave pairing symmetry. These results combine unusual features of the electronic structure of graphene with the unconventional pairing symmetry found for instance in high-Tc superconductors.