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SUMMARY:(SP Workshop) One-dimensional electron systems beyond the Tomonaga
 -Luttinger liquid model - Miss Ankita Anirban\, University of Cambridge\, 
 Semiconductor Physics Group
DTSTART:20150708T131500Z
DTEND:20150708T141500Z
UID:TALK59556@talks.cam.ac.uk
CONTACT:Teri Bartlett
DESCRIPTION:One-dimensional (1D) electron systems are described by the Tom
 onaga-Luttinger liquid (TLL) model. This gives rise to phenomena such as s
 pin-charge separation and the zero-bias anomaly [1]. These predictions hav
 e been experimentally observed in GaAs/AlGaAs heterostructure devices by m
 easuring the tunnelling between an array of 1D wires and a 2DEG [2]. The a
 im of our project is to go beyond the TLL model\, which assumes wires of i
 nfinite length\, by studying shorter wires (< 10um) in which the edge effe
 cts must be accounted for. It has been theoretically predicted that higher
  order excitations should appear in shorter wires [3]. I present recent da
 ta showing promising signs of these excitations.\n\n[1] Deshpande et al. E
 lectron liquids and solids in one dimension\, Nature 464\, p.209-216 (2010
 ) [2] Jompol et al. Probing spin-charge separation in a Tomonaga-Luttinger
  liquid\, Science 325\, p.597-601 (2009) [3] Tsyplyatyev et al. Hierarchy 
 of Modes in an Interacting One-Dimensional System\, Phys Rev Lett 114\, 19
 6401 (2015)\n
LOCATION:Mott Seminar Room (Mott Building Room 531)\, Cavendish Laboratory
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