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CATEGORIES:Semiconductor Physics Group Seminars
SUMMARY:(SP Workshop) One-dimensional electron systems bey
 ond the Tomonaga-Luttinger liquid model - Miss Ank
 ita Anirban\, University of Cambridge\, Semiconduc
 tor Physics Group
DTSTART;TZID=Europe/London:20150708T141500
DTEND;TZID=Europe/London:20150708T151500
UID:TALK59556AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/59556
DESCRIPTION:One-dimensional (1D) electron systems are describe
 d by the Tomonaga-Luttinger liquid (TLL) model. Th
 is gives rise to phenomena such as spin-charge sep
 aration and the zero-bias anomaly [1]. These predi
 ctions have been experimentally observed in GaAs/A
 lGaAs heterostructure devices by measuring the tun
 nelling between an array of 1D wires and a 2DEG [2
 ]. The aim of our project is to go beyond the TLL 
 model\, which assumes wires of infinite length\, b
 y studying shorter wires (< 10um) in which the edg
 e effects must be accounted for. It has been theor
 etically predicted that higher order excitations s
 hould appear in shorter wires [3]. I present recen
 t data showing promising signs of these excitation
 s.\n\n[1] Deshpande et al. Electron liquids and so
 lids in one dimension\, Nature 464\, p.209-216 (20
 10) [2] Jompol et al. Probing spin-charge separati
 on 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\, 196401 (2015)\n
LOCATION:Mott Seminar Room (Mott Building Room 531)\, Caven
 dish Laboratory
CONTACT:Teri Bartlett
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