Phase-tunable Majorana bound states in a topological N-SNS junction
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Phase-tunable Majorana bound states in a topological N-SNS junction. / Hansen, Esben Bork; Danon, Jeroen; Flensberg, Karsten.
In: Physical Review B, Vol. 93, No. 9, 094501, 01.03.2016.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Phase-tunable Majorana bound states in a topological N-SNS junction
AU - Hansen, Esben Bork
AU - Danon, Jeroen
AU - Flensberg, Karsten
N1 - [Qdev]
PY - 2016/3/1
Y1 - 2016/3/1
N2 - We theoretically study the differential conductance of a one-dimensional normal-superconductor-normal-superconductor (N-SNS) junction with a phase bias applied between the two superconductors. We consider specifically a junction formed by a spin-orbit coupled semiconducting nanowire with regions of the nanowire having superconducting pairing induced by a bulk s-wave superconductor. When the nanowire is tuned into a topologically nontrivial phase by a Zeeman field, it hosts zero-energy Majorana modes at its ends as well as at the interface between the two superconductors. The phase-dependent splitting of the Majorana modes gives rise to features in the differential conductance that offer a clear distinction between the topologically trivial and nontrivial phases. We calculate the transport properties of the junction numerically and also present a simple analytical model that captures the main properties of the predicted tunneling spectroscopy.
AB - We theoretically study the differential conductance of a one-dimensional normal-superconductor-normal-superconductor (N-SNS) junction with a phase bias applied between the two superconductors. We consider specifically a junction formed by a spin-orbit coupled semiconducting nanowire with regions of the nanowire having superconducting pairing induced by a bulk s-wave superconductor. When the nanowire is tuned into a topologically nontrivial phase by a Zeeman field, it hosts zero-energy Majorana modes at its ends as well as at the interface between the two superconductors. The phase-dependent splitting of the Majorana modes gives rise to features in the differential conductance that offer a clear distinction between the topologically trivial and nontrivial phases. We calculate the transport properties of the junction numerically and also present a simple analytical model that captures the main properties of the predicted tunneling spectroscopy.
U2 - 10.1103/PhysRevB.93.094501
DO - 10.1103/PhysRevB.93.094501
M3 - Journal article
VL - 93
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 9
M1 - 094501
ER -
ID: 156934069