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PRODID:-//University of Illinois//Web Services Calendar//EN
VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20120214T143559Z
DTSTART;TZID=America/Chicago:20091109T120000
DTEND;TZID=America/Chicago:20091109T120000
SUMMARY:ICMT Seminar: "Nematic order in Sr_3_Ru_2_O_7_ and triplet superc
 onductivity in Sr_2_RuO_4_"
CREATED:20090901T130000Z
DESCRIPTION:In an externally applied magnetic field\, ultra-pure crystals
  of the bilayer ruthenate compound Sr3Ru2O7 undergo a metamagnetic trans
 ition at a temperature which approaches zero as B approaches a critical 
 value. This "metamagnetic quantum critical point"\, however\, is envelop
 ed by a nematic fluid phase with order one resistive anisotropy in the a
 b plane. In this talk\, I will discuss the microscopic origins of metama
 gnetism and the accompanying nematic order in this system. I propose tha
 t both can be understood within the framework of an orbital-ordering ten
 dency of the material and present a phase diagram which accounts for muc
 h of the experimentally observed phenomena. By contrast\, the closely re
 lated monolayer compound\, Sr2RuO4\, is a spin-triplet superconductor\; 
 it does not exhibit metamagnetism or nematic order. This drastic differe
 nce in the physical properties of the two materials - despite their stru
 ctural similarity - points towards a possible microscopic mechanism of t
 riplet superconductivity in Sr2RuO4. I will conclude the talk with a dis
 cussion of our recent progress in understanding the microscopic origins 
 of superconductivity in Sr2RuO4.
LAST-MODIFIED:20091006T130000Z
LOCATION:190 ESB
CATEGORIES:ICMT Seminar
CONTACT:Sue Lynn Herdle 244-1553
ORGANIZER:suelynn@illinois.edu
URL:http://illinois.edu/calendar/detail/1968?key=2000010120000101137527
UID:137527@illinois.edu
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