Proximity effect in a two-dimensional electron gas coupled to a thin superconducting layer
2018 ◽
Vol 9
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pp. 1263-1271
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Keyword(s):
There have recently been several experiments studying induced superconductivity in semiconducting two-dimensional electron gases that are strongly coupled to thin superconducting layers, as well as probing possible topological phases supporting Majorana bound states in such setups. We show that a large band shift is induced in the semiconductor by the superconductor in this geometry, thus making it challenging to realize a topological phase. Additionally, we show that while increasing the thickness of the superconducting layer reduces the magnitude of the band shift, it also leads to a more significant renormalization of the semiconducting material parameters and does not reduce the challenge of tuning into a topological phase.
1997 ◽
Vol 9
(32)
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pp. 6885-6900
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Keyword(s):
2000 ◽
Vol 84
(1)
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pp. 187-190
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