Universität zu Köln

De Martino, Alessandro ORCID: 0000-0002-3656-0419, Huetten, Artur and Egger, Reinhold ORCID: 0000-0001-5451-1883 (2011). Landau levels, edge states, and strained magnetic waveguides in graphene monolayers with enhanced spin-orbit interaction. Phys. Rev. B, 84 (15). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

The electronic properties of a graphene monolayer in a magnetic and a strain-induced pseudomagnetic field are studied in the presence of spin-orbit interactions (SOIs) that are artificially enhanced (e.g., by suitable adatom deposition). For the homogeneous case, we provide analytical results for the Landau level eigenstates for arbitrary intrinsic and Rashba SOIs, including also the Zeeman field. The edge states in a semi-infinite geometry are studied in the absence of the Rashba term. For a critical value of the magnetic field, we find a quantum phase transition separating two phases with spin-filtered helical edge states at the Dirac point. These phases have opposite spin current direction. We also discuss strained magnetic waveguides with inhomogeneous field profiles that allow for chiral snake orbits. Such waveguides are practically immune to disorder-induced backscattering, and the SOI provides nontrivial spin texture to these modes.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code De Martino, Alessandro UNSPECIFIED orcid.org/0000-0002-3656-0419 UNSPECIFIED Huetten, Artur UNSPECIFIED UNSPECIFIED UNSPECIFIED Egger, Reinhold UNSPECIFIED orcid.org/0000-0001-5451-1883 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-487327
DOI:	10.1103/PhysRevB.84.155420
Journal or Publication Title:	Phys. Rev. B
Volume:	84
Number:	15
Date:	2011
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TRANSPORT Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48732