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CATEGORIES:Lecture
DESCRIPTION:Extreme magnetic field superconductivity in a uranium-based mat
 erial \n\nSuperconductivity is a phenomenon where a material exhibits a com
 plete lack of electrical resistance. This effect has wide applicability in 
 technologies ranging from power transmission to medical imaging to quantum 
 information. Unfortunately\, it is also incredibly fragile\, generally bein
 g destroyed by temperatures not far above absolute zero and by relatively w
 eak magnetic fields. The quest for robust superconductivity has mostly focu
 sed on raising the temperature ceiling\, with magnetic field stability gene
 rally coming along for the ride. In this talk I will present a fascinating 
 alternative situation: a superconductor with a very low critical temperatur
 e (2 K) that is extraordinarily robust to\, and in some cases\, actually ai
 ded by magnetic fields. The material in question is uranium-based system UT
 e2. UTe2 has a highly complex temperature\, field phase diagram and is thou
 ght to harbor so-called exotic superconductivity in multiple places. I will
  focus on the high field superconducting phase (B > 40 T) and our recent at
 tempts to uncover its geometric structure using some of the world’s most po
 werful magnets. [1] Finally\, I will comment on what instructive physics ma
 y be revealed by these experiments. \n\n[1] S. K. Lewin*\, P. Czajka* et al
 . Science 389 (6759) 512-515\, (2025). \n\n.
DTEND:20251015T210000Z
DTSTAMP:20260307T183045Z
DTSTART:20251015T200000Z
GEO:42.335064;-71.168846
LOCATION:Higgins Hall\, 310
SEQUENCE:0
SUMMARY:Physics Colloquium: Peter Czajka\, University of Maryland
UID:tag:localist.com\,2008:EventInstance_50454547934965
URL:https://events.bc.edu/event/physics-colloquium-peter-czajka-university-
 of-maryland
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