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Title: 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 photocurrent generation is based on the combined action of a spatially periodic in-plane potential and a spatially modulated light.
Authors:
; ;  [1] ; ; ; ; ;  [2]
  1. Ioffe Physical-Technical Institute of the Russian Academy of Sciences, St. Petersburg (Russian Federation)
  2. Terahertz Center, University of Regensburg, Regensburg (Germany)
Publication Date:
OSTI Identifier:
22261754
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1566; Journal Issue: 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRIC FIELDS; GRAPHENE; HELICITY; PHOTOCURRENTS; QUANTUM WELLS; SUPERLATTICES; THZ RANGE