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Bagrets, Dmitry and Altland, Alexander (2012). Class D Spectral Peak in Majorana Quantum Wires. Phys. Rev. Lett., 109 (22). COLLEGE PK: AMER PHYSICAL SOC. ISSN 0031-9007

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Abstract

Proximity coupled spin-orbit quantum wires purportedly support midgap Majorana states at critical points. We show that, in the presence of disorder, these systems generate a second band center anomaly, which is of different physical origin but shares key characteristics with the Majorana state: it is narrow in width, insensitive to magnetic fields, carries unit spectral weight, and is rigidly tied to the band center. Depending on the parity of the number of subgap quasiparticle states, a Majorana mode does or does not coexist with the impurity peak. The strong entanglement'' between the two phenomena may hinder an unambiguous detection of the Majorana by spectroscopic techniques.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bagrets, Dmitry UNSPECIFIED UNSPECIFIED UNSPECIFIED Altland, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-478378
DOI:	10.1103/PhysRevLett.109.227005
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	109
Number:	22
Date:	2012
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	0031-9007
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47837