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Adiabatic pumping in the quasi-one-dimensional triangle lattice

 
: Schulze, M.; Bercioux, D.; Urban, D.F.

:
Preprint urn:nbn:de:0011-n-2343959 (3.3 MByte PDF)
MD5 Fingerprint: 7010cc0932dabbfd315e83e6bd9f1d3e
Created on: 5.12.2014


Physical Review. B 87 (2013), No.2, Art. 024301, 6 pp.
ISSN: 0163-1829
ISSN: 1098-0121
ISSN: 0556-2805
English
Journal Article, Electronic Publication
Fraunhofer IWM ()
quantum pumping; Quantum transport; quantum wire

Abstract
We analyze the properties of the quasi-one-dimensional triangle lattice emphasizing the occurrence of flat bands and band touching via the tuning of the lattice hopping parameters and on-site energies. The spectral properties of the infinite system will be compared with the transmission through a finite piece of the lattice with attached semi-infinite leads. Furthermore, we investigate the adiabatic pumping properties of such a system: Depending on the transmission through the lattice, this results in nonzero integer charge transfers or transfers that increase linearly with the lattice size.

: http://publica.fraunhofer.de/documents/N-234395.html