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SUMMARY:Focusing of electrons and holes in semiconductors: from semi-class
 ical dynamics to spintronics
DTSTART;VALUE=DATE-TIME:20160205T004500Z
DTEND;VALUE=DATE-TIME:20160205T010000Z
DTSTAMP;VALUE=DATE-TIME:20260813T185258Z
UID:indico-contribution-451@events01.synchrotron.org.au
DESCRIPTION:Speakers: Samuel Bladwell (The University of New South Wales)\
 nThe dynamics of charge carriers in spin-orbit coupled systems is a vital 
 area of investigation for the extremely active field of spintronics. Contr
 olling and manipulating the flow of electrons and holes serves as the foun
 dation of an entire class of spintronic devices\, most notably the Datta-D
 as spin transistor \\cite{Datta1990}. In this talk\, I give an overview of
  the dynamics of charge carriers in such semiconductor systems\, subject t
 o external fields\, in the context of magnetic focusing experiments. This 
 experimental technique involves the coherent focusing of charge carriers o
 ver a scale of micrometers by a weak magnetic field\, from an injector to 
 a collector quantum point contact (QPC) \\cite{Vanhouten1989\, Rokhinson20
 04}. I will present a detailed semi-classical theory for the focusing of b
 oth electrons and holes for general spin orbit interactions\, and show tha
 t for the experimentally interesting case of polarization inducing in-plan
 e magnetic fields\, a significant change in the magnetic focusing spectrum
  is possible. \n\n\\bibitem{Datta1990}\nS. Datta\, and B. Das\,  {Appl. Ph
 ys. Lett. {\\bf 56}\, 665 (1990).\n\n\\bibitem{Vanhouten1989}\nH. Van Hout
 en}\, C. W. J. Beenakker\, J. G. Williamson\, M. E I Broekaart\,  \nP. H. 
 M . Van Loosdrecht\,  B. J. Van Wees\, J. E. Mooij\, C. T. Foxon\,  \nand 
 J. J. Harris\, Phys. Rev. B.{\\bf 39}\, 8556 (1989).\n\n\\bibitem{Rokhinso
 n2004}\nL. P. Rokhinson\, V Larkina\, Y. B. Lyanda-Geller\, L. N. Pfeiffer
 \, K. W. West\,\nPhys. Rev. Lett. {\\bf 93}\, 146601 (2004).\n\nhttps://ev
 ents01.synchrotron.org.au/event/19/contributions/451/
LOCATION:
URL:https://events01.synchrotron.org.au/event/19/contributions/451/
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