Quantum Dot Parity Effects in Trivial and Topological Josephson Junctions
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Quantum Dot Parity Effects in Trivial and Topological Josephson Junctions. / Razmadze, D.; O'Farrell, E. C. T.; Krogstrup, P.; Marcus, C. M.
In: Physical Review Letters, Vol. 125, No. 11, 116803, 08.09.2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Quantum Dot Parity Effects in Trivial and Topological Josephson Junctions
AU - Razmadze, D.
AU - O'Farrell, E. C. T.
AU - Krogstrup, P.
AU - Marcus, C. M.
PY - 2020/9/8
Y1 - 2020/9/8
N2 - An odd-occupied quantum dot in a Josephson junction can flip transmission phase, creating a pi junction. When the junction couples topological superconductors, no phase flip is expected. We investigate this and related effects in a full-shell hybrid interferometer, using gate voltage to control dot-junction parity and axial magnetic flux to control the transition from trivial to topological superconductivity. Enhanced zero-bias conductance and critical current for odd parity in the topological phase reflects hybridisation of the confined spin with zero-energy modes in the leads.
AB - An odd-occupied quantum dot in a Josephson junction can flip transmission phase, creating a pi junction. When the junction couples topological superconductors, no phase flip is expected. We investigate this and related effects in a full-shell hybrid interferometer, using gate voltage to control dot-junction parity and axial magnetic flux to control the transition from trivial to topological superconductivity. Enhanced zero-bias conductance and critical current for odd parity in the topological phase reflects hybridisation of the confined spin with zero-energy modes in the leads.
KW - TRANSITION
U2 - 10.1103/PhysRevLett.125.116803
DO - 10.1103/PhysRevLett.125.116803
M3 - Journal article
C2 - 32975997
VL - 125
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
M1 - 116803
ER -
ID: 248851519