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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-1563
DTSTART:20091120T220000Z
DURATION:PT1H0M0S
DTSTAMP:20260311T155805Z
LAST-MODIFIED:20091111T163024Z
LOCATION:2241 Chamberlin Hall (coffee at 3:30 pm)
SUMMARY:Superconductivity at the Dawn of the Iron Age\, Physics Depart
 ment Colloquium\, Zlatko Tesanovich\, John Hopkins University
DESCRIPTION:Recent discovery of iron-based high-temperature supercondu
 ctors hints at a new pathway to the room temperature superconductivity
 . The new materials feature FeAs layers instead of the signature CuO2 
 planes of much studied cuprate superconductors. The antiferromagnetism
  also appears to be involved\,although the d-electrons in FeAs seem co
 nsiderably more mobile than their cuprate cousins. This high mobility\
 , facilitated by a large overlap amongst atomic orbitals of Fe and As\
 , plays a crucial role in warding off Hund's rule and the large local 
 moment magnetism of Fe ions\, the archrival of superconductivity. A pe
 dagogical review of the current status of the high-temperature superco
 nductivity field will be presented\, highlighting similarities and dif
 ferences between Fe-pnictides and cuprates and emphasizing the importa
 nce of the multiband nature of magnetism and superconductivity in thes
 e new materials. 
URL:https://www.physics.wisc.edu/events/?id=1563
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