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Title: Shot-noise at a Fermi-edge singularity: Non-Markovian dynamics

For an InAs quantum dot we study the current shot noise at a Fermi-edge singularity in low temperature cross-correlation measurements. In the regime of the interaction effect the strong suppression of noise observed at zero magnetic field and the sequence of enhancement and suppression in magnetic field go beyond a Markovian master equation model. Qualitative and quantitative agreement can however be achieved by a generalized master equation model taking non-Markovian dynamics into account.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstraße 2, D-30167 Hannover (Germany)
  2. Institute of Physics, Wrocław University of Technology, PL-50370 Wrocław (Poland)
  3. Physikalisch-Technische Bundesanstalt, D-38116 Braunschweig (Germany)
  4. Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, CZ-12116 Prague (Czech Republic)
Publication Date:
OSTI Identifier:
22261793
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; INDIUM ARSENIDES; INTERACTIONS; MAGNETIC FIELDS; QUANTUM DOTS; SEMICONDUCTOR MATERIALS