Phonon Signatures of a Quantum Impurity with Induced Electron Pairing

• Authors: J. Barański , T. Domański
• Languages of publication: EN

Abstracts

EN

We analyze the effective spectrum of a vibrating molecule coupled between one conducting and another superconducting electrode. The proximity effect induces electron pairing which is manifested by the subgap quasiparticle peaks (the Andreev states) whose broadening depends on a hybridization with the conducting electrode. On the other hand, the electron-phonon interaction leads to a multilevel structure with the polaronic states separated by the phonon energy. We inspect a combined effect of both these (polaronic and induced pairing) phenomena.

Keywords

EN

73.63.Kv; 73.23.Hk; 74.45.+c; 74.50.+r; 63.22.-m

Discipline

• 74.50.+r: Tunneling phenomena; Josephson effects(for SQUIDs, see 85.25.Dq; for Josephson devices, see 85.25.Cp; for Josephson junction arrays, see 74.81.Fa)
• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 63.22.-m: Phonons or vibrational states in low-dimensional structures and nanoscale materials
• 74.45.+c: Proximity effects; Andreev reflection; SN and SNS junctions
• 73.63.Kv: Quantum dots

• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 4a
• Pages: A-73-A-76

Dates

published

2014-10

Contributors

author

J. Barański

• Institute of Physics, M. Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

T. Domański

• Institute of Physics, M. Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

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Identifiers

DOI

10.12693/APhysPolA.126.A-73