Kormanyos, Andor and Schomerus, Henning (2006) Superconducting terminals as sensitive probes for scarred states. Physical Review Letters, 97 (12). p. 124102. ISSN 1079-7114
Full text not available from this repository.Abstract
When a quantum-chaotic normal conductor is coupled to a superconductor, the random-matrix theory (RMT) predicts that a gap opens up in the excitation spectrum which is of universal size E_g^RMT approx 0.3 hbar/tD, where tD is the mean scattering time between Andreev reflections. We show that a scarred state of long lifetime tS>>tD suppresses the excitation gap over a window Delta E approx 2E_g^RMT which can be much larger than the narrow resonance width Gamma_S=hbar/tS of the scar in the normal system. The minimal value of the excitation gap within this window is given by Gamma_S/2<<E_g^RMT. Via this suppression of the gap to a nonuniversal value, the scarred state can be detected over a much larger energy range than it is in the case when the superconducting terminal is replaced by a normal one.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physical Review Letters |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 641 |
| Deposited By: | Dr Henning Schomerus |
| Deposited On: | 16 Oct 2007 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 18:14 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/641 |
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