Explanation of subharmonic energy gap structure in superconducting contacts

Klapwijk, T. M.; Blonder, G. E.; Tinkham, M.

doi:10.1016/0378-4363(82)90528-9

Cited by 149 publications

(182 citation statements)

References 14 publications

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“…1). As is well known, the current-voltage characteristics in such a Josephson structure can be described by the mechanism of multiple Andreev reflections (MARs) for the voltages, which do not exceed 2∆ 0 /e (subgap regime) [32]. In a particular, for Y-shaped Andreev interferometers the effect of MARs on current-voltage prop-90 erties was studied in Refs.…”

Section: Shapiro-like Steps 75mentioning

confidence: 99%

Enhancement of Shapiro-like steps in multiterminal Josephson structures

Savinov

2016

Physica C: Superconductivity and its Applications

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Section: Shapiro-like Steps 75mentioning

confidence: 99%

Enhancement of Shapiro-like steps in multiterminal Josephson structures

Savinov

2016

Physica C: Superconductivity and its Applications

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“…The microscopic state of a superconductor is described by the Bogoliubov-de Gennes ͑BdG͒ equations: 6,[11][12][13] iប ‫ץ‬f ‫ץ‬t…”

Section: Bogoliubov-de Gennes Equation Coherence Factors and Cmentioning

confidence: 99%

Graphite-superconductor junctions as a probe of order-parameter symmetry

Parker

Thalmeier

2007

Phys. Rev. B

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We discuss a method for determining the order-parameter symmetry of quasi-one-and quasi-twodimensional unconventional superconductors by the use of graphite-superconductor junctions. The use of a graphite gate voltage, in combination with a bias tunneling voltage, allows access to more information concerning gap values on the Fermi surface than with conventional tunneling spectroscopy, where only a bias voltage is employed. In particular, the use of a gate voltage allows one to tune the momentum-space size of the tunneling region, thus accessing gap values over local regions of the superconductor Fermi surface, in contrast to conventional tunneling techniques.

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“…On the other hand, also nonequilibrium transport properties of nanodevices contacted to two superconducting electrodes have been a subject of intensive research since many years, from both theoretical [18][19][20][21][22][23][24][25] and experimental 26 sides. In particular, semiconductor-superconductor hybrid systems are currently under the spotlight because techniques have been developed to realize highly transparent semi/super interfaces 27 by suppressing Schottky barriers and enhancing the measured signal.…”

Section: Introductionmentioning

confidence: 99%

“…25 In each Andreev reflection the incoming and outgoing electron-hole pairs have opposite spins. 20,21 In the presence of spin-orbit, however, the dot levels lack of a definite spin orientation. The question thus arises whether the resonances with dot levels and Andreev processes persist or whether spin-orbit coupling suppresses the MAR peaks.…”

Section: Introductionmentioning

confidence: 99%

Multiple Andreev reflections in a quantum dot coupled to superconducting leads: Effect of spin-orbit coupling

Dolcini

Dell’Anna

2008

Phys. Rev. B

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We study the out of equilibrium current through a multilevel quantum dot contacted to two superconducting leads and in the presence of Rashba and Dresselhaus spin-orbit couplings, in the regime of strong dot-lead coupling. The multiple Andreev reflection (MAR) subgap peaks in the current-voltage characteristics are found to be modified (but not suppressed) by the spin-orbit interaction in a way that it strongly depends on the shape of the dot confining potential. In a perfectly isotropic dot the MAR peaks are enhanced when the strength αR and αD of Rashba and Dresselhaus terms are equal. When the anisotropy of the dot confining potential increases, the dependence of the subgap structure on the spin-orbit angle θ=arctan(αD/αR) decreases. Furthermore, when an in-plane magnetic field is applied to a strongly anisotropic dot, the peaks of the nonlinear conductance oscillate as a function of the magnetic-field angle and the location of the maxima and minima allows for a straightforward read-out of the spin-orbit angle θ

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Explanation of subharmonic energy gap structure in superconducting contacts

Cited by 149 publications

References 14 publications

Enhancement of Shapiro-like steps in multiterminal Josephson structures

Enhancement of Shapiro-like steps in multiterminal Josephson structures

Graphite-superconductor junctions as a probe of order-parameter symmetry

Multiple Andreev reflections in a quantum dot coupled to superconducting leads: Effect of spin-orbit coupling

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