Universität zu Köln

Meng, Tobias, Fritz, Lars, Schuricht, Dirk ORCID: 0000-0002-5255-780X and Loss, Daniel ORCID: 0000-0001-5176-3073 (2014). Low-energy properties of fractional helical Luttinger liquids. Phys. Rev. B, 89 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1550-235X

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Abstract

We investigate the low-energy properties of (quasi) helical and fractional helical Luttinger liquids. In particular, we calculate the Drude peak of the optical conductivity, the density of states, as well as charge transport properties of the interacting system with and without attached Fermi liquid leads at small and large (compared to the gap) frequencies. For fractional wires, we find that the low-energy tunneling density of states vanishes. The conductance of a fractional helical Luttinger liquid is noninteger. It is independent of the Luttinger parameters in the wire, despite the intricate mixing of charge and spin degrees of freedom, and only depends on the relative locking of charge and spin degrees of freedom.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Meng, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED Fritz, Lars UNSPECIFIED UNSPECIFIED UNSPECIFIED Schuricht, Dirk UNSPECIFIED orcid.org/0000-0002-5255-780X UNSPECIFIED Loss, Daniel UNSPECIFIED orcid.org/0000-0001-5176-3073 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-448574
DOI:	10.1103/PhysRevB.89.045111
Journal or Publication Title:	Phys. Rev. B
Volume:	89
Number:	4
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1550-235X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language QUANTUM WIRES; COULOMB DRAG; CONDUCTANCE; TRANSPORT; NANORIBBONS; SYSTEM Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/44857