Spin-polarized multiple Andreev reflections in spin-split superconductors
Spin-polarized multiple Andreev reflections in spin-split superconductors
复制标题
自旋分裂超导体中的自旋偏振多次安德烈夫反射
DOI:
10.1103/physrevb.101.020502
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发表时间:
2019-07
影响因子:
3.7
通讯作者:
Yukio Tanaka
中科院分区:
文献类型:
--
作者:
Bo Lu;Pablo Burset;Yukio Tanaka
Superconductors with spin-split energy bands are an important building block for superconducting spintronic designs. Motivated by the recent measurement of tunneling quasiparticle currents between spin-split superconductors, this work investigates theoretically voltage-biased Josephson junctions of arbitrary transparency. The authors show that an exotic subharmonic gap structure arises due to spin-polarized multiple Andreev reflections (MARs), where the odd-order MARs split, but the even-order ones remain unaffected by the spin-split fields. These findings provide a tool to determine the amplitude and alignment of Zeeman fields in spin-split superconductors.
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