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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-4392
DTSTART:20170302T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T060301Z
LAST-MODIFIED:20170225T220734Z
LOCATION:Chamberlin 5310
SUMMARY:Spiraling energy dispersion of arc states in Weyl semimetals\,
  R. G. Herb Condensed Matter Seminar\, Anton Andreev\, University of W
 ashington
DESCRIPTION:Weyl semimetals are recently discovered materials in which
  the <br>
\nvalence and conduction bands touch at isolated points (Wey
 l nodes)<br>
\nin the Brillouin zone. This gives rise to unusual elect
 ronic properties <br>
\nof these materials. In particular\, Weyl semim
 etals host peculiar <br>
\nsurface electron states whose Fermi lines h
 ave the form of open arcs. <br>
\nI will show that static electric fie
 lds that are necessarily present <br>
\nnear the crystal surface resul
 t in a spiraling structure of Fermi arcs. <br>
\nThe winding angle of 
 the spiral is controlled by the chirality of the Weyl <br>
\nnode and 
 the magnitude of the surface potential. I will also discuss <br>
\nmag
 netoresistance of a pn-junction in a Weyl semimetal.
URL:https://www.physics.wisc.edu/events/?id=4392
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