Photon-assisted parity change and Andreev tunneling

Hanke, Ulrik; Gisselfält, M.; Chao, K. A.

doi:10.1103/physrevb.54.1529

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…30 Hanke, Gisselfält, and Chao studied the photon-assisted Andreev tunneling ͑PAAT͒ through a normal-metal-superconductornormal-metal single-electron tunneling transistor with an oscillating potential coupled to the superconductor. 31 Zhao et al investigated the PAT through a normal-metal-normalquantum-dot-superconductor system without considering the PAAT process. 32 In this paper, we shall investigate the PAAT through a mesoscopic hybrid system, a normal-metal-quantum-dotsuperconductor system (N-QD-S), with time-dependent external fields.…”

Section: Introductionmentioning

confidence: 99%

Photon-assisted Andreev tunneling through a mesoscopic hybrid system

1999

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The electron tunneling through a mesoscopic hybrid system, a normal-metal-quantum-dot-superconductor (N-QD-S) system where the intradot Coulomb interaction is neglected, in the presence of the time-varying external fields, has been investigated. By using the nonequilibrium Green-function method, the time-dependent current j L (t) and the average current ͗ j(t)͘ are derived. The photon-assisted Andreev tunneling ͑PAAT͒ and the normal photon-assisted tunneling ͑PAT͒ are studied in detail. In the case of បϽ⌬, where is the frequency of external fields and ⌬ is the energy gap of the superconducting lead, the average current ͗j͘ vs the gate voltage exhibits a series of equal-interval PAAT peaks, with negative peaks on the left-hand side and positive peaks on the right-hand side of the original resonant peak in the absence of the external fields. This is very different from the N-QD-N system. While for បϾ⌬, various PAT processes cause a rather complicated dependence of the current on the gate voltage. In addition, the current-bias-voltage characteristics become more complicated: each Andreev reflection peak is split into side-band peaks and each current plateau is split into substep plateaus. ͓S0163-1829͑99͒02819-2͔

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Section: Introductionmentioning

confidence: 99%

Photon-assisted Andreev tunneling through a mesoscopic hybrid system

1999

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“…In the presence of external time-dependent fields, the quantum transport behaviors become more complicated for mesoscopic hybrid systems. The photon-assisted Andreev tunneling (PAAT) through a single-electron tunneling transistor with an oscillating potential coupled to the superconductor has been studied [19]. The PAAT through a mesoscopic hybrid N/QD/S system has also been studied, where the average current shows a series of PAAT peaks [20].…”

Section: Introductionmentioning

confidence: 99%

AC field-controlled Andreev tunneling through a serially-coupled double quantum dot system

Pan

Duan

2009

Physics Letters A

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Photon-assisted parity change and Andreev tunneling

Cited by 2 publications

References 23 publications

Photon-assisted Andreev tunneling through a mesoscopic hybrid system

Photon-assisted Andreev tunneling through a mesoscopic hybrid system

AC field-controlled Andreev tunneling through a serially-coupled double quantum dot system

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