Ratchet effects in graphene and quantum wells with lateral superlattice

Ratchet effects in graphene and quantum wells with lateral superlattice

Theoretical and experimental studies on the ratchet effects in graphene and in quantum wells with a lateral superlattice excited by alternating electric fields of terahertz frequency range are presented. We discuss the Seebeck ratchet effect and helicity driven photocurrents and show that the photoc...

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Bibliographische Detailangaben
Hauptverfasser: Golub, L E, Nalitov, A V, Ivchenko, E L, Olbrich, P, Kamann, J, Eroms, J, Weiss, D, Ganichev, S D
Format: Tagungsbericht
Sprache:eng
Schlagworte:
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC FIELDS
GRAPHENE
HELICITY
NANOSCIENCE AND NANOTECHNOLOGY
PHOTOCURRENTS
Photoelectric effect
Photoelectric emission
QUANTUM WELLS
SUPERLATTICES
Terahertz frequencies
THZ RANGE
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Beschreibung
Zusammenfassung:Theoretical and experimental studies on the ratchet effects in graphene and in quantum wells with a lateral superlattice excited by alternating electric fields of terahertz frequency range are presented. We discuss the Seebeck ratchet effect and helicity driven photocurrents and show that the photocurrent generation is based on the combined action of a spatially periodic in-plane potential and a spatially modulated light.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4848314