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SUMMARY:Oxide interface based quantum wires
DTSTART:20140425T141500
DTSTAMP:20260407T064501Z
UID:7e5068430164660c07a00c4fe1015a6f96a2b3bbcbd53c1d0ca665ef
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Yoram Dagan\, School of Physics and Astronomy\, Tel Aviv
  University\, Israel\nOxide interfaces can have physical properties which 
 are very different from their constituting materials. These properties can
  manifest themselves in various orders such as superconductivity\, magneti
 sm\, and ferroelectricity. Of these interfaces probably the most studied o
 ne is the interface between the two insulating perovskites: SrTiO3 and LaA
 lO3\, which exhibits properties of a two dimensional electron gas\, superc
 onductivity strong spin-orbit interaction and magnetism.\nIn this talk I w
 ill briefly review the state of the art research of oxide interfaces and e
 specially SrTiO3/LaAlO3 interface. I will then describe our findings on na
 no-sized bridges (nanowires) and our new technique to fabricate quantum wi
 res from such interfaces.\nFrom transport in the nanowires we can probe an
  anomalous magnetic order consisting of domains with opposite magnetizatio
 n having a higher coercive field for in-plane orientation. When making the
  wires even narrower a quantized conductance is observed with discrete ste
 ps as a function of gate voltage characteristics of a one dimensional chan
 nel. The step size of exactly half the quantum of conductance is an eviden
 ce for absence of spin degeneracy.\nThe possibility to control correlation
  effects\, spin-orbit interactions and coupling to superconductivity makes
  this wire a laboratory for studying Majorana fermions and spin dependent 
 transport.\nBio: Education\n    1997-2001\n    Tel Aviv University\n
     Tel Aviv\, Israel\n    Physics\n    Ph.D.\n    Jun 2002\nA
 cademic and professional experience\n    2009-Present\n    Tel Aviv 
 University\n    School of Physics and Astronomy\n    Associate Profe
 ssor\n    2005-2009\n    Tel Aviv University\n    School of Physi
 cs and Astronomy\n    Senior Lecturer\n    2002-2005\n    Univers
 ity of Maryland\,\n    College Park\, Maryland\,\n    USA\n    Ce
 nter for Superdonductivity Research\n    Research-Associate\n    (Po
 st-doc)
LOCATION:PH L1 503 (Aquarium) http://plan.epfl.ch/?room=PHL1503
STATUS:CONFIRMED
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