Universität zu Köln

Robinson, Neil J., Altland, Alexander ORCID: 0000-0002-2991-4805, Egger, Reinhold ORCID: 0000-0001-5451-1883, Gergs, Niklas M., Li, Wei, Schuricht, Dirk ORCID: 0000-0002-5255-780X, Tsvelik, Alexei M., Weichselbaum, Andreas ORCID: 0000-0002-5832-3908 and Konik, Robert M. (2019). Nontopological Majorana Zero Modes in Inhomogeneous Spin Ladders. Phys. Rev. Lett., 122 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We show that the coupling of homogeneous Heisenberg spin-1/2 ladders in different phases leads to the formation of interfacial zero energy Majorana bound states. Unlike Majorana bound states at the interfaces of topological quantum wires, these states are void of topological protection and generally susceptible to local perturbations of the host spin system. However, a key message of our Letter is that, in practice, they show a high degree of resilience over wide parameter ranges which may make them interesting candidates for applications.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Robinson, Neil J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Altland, Alexander UNSPECIFIED orcid.org/0000-0002-2991-4805 UNSPECIFIED Egger, Reinhold UNSPECIFIED orcid.org/0000-0001-5451-1883 UNSPECIFIED Gergs, Niklas M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Li, Wei UNSPECIFIED UNSPECIFIED UNSPECIFIED Schuricht, Dirk UNSPECIFIED orcid.org/0000-0002-5255-780X UNSPECIFIED Tsvelik, Alexei M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Weichselbaum, Andreas UNSPECIFIED orcid.org/0000-0002-5832-3908 UNSPECIFIED Konik, Robert M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-159219
DOI:	10.1103/PhysRevLett.122.027201
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	122
Number:	2
Date:	2019
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SINE-GORDON MODEL; NONLINEAR INTEGRAL-EQUATION; BOUNDARY STATES; FERMIONS; SPECTRUM; CHARGE; SPACE; GAP Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15921