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UID:DSC-20445
DTSTART;TZID=Europe/Berlin:20240119T100000
SEQUENCE:1705646306
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20240119T110000
URL:https://www.dresden-science-calendar.de/calendar/de/detail/20445
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:Pedrazzini: Enhanced weak superconductivity in trigonal y - PtBi2
CLASS:PUBLIC
DESCRIPTION:Speaker: Dr. Pablo Pedrazzini\nInstitute of Speaker: IFW Dresde
 n\nTopics:\n\n Location:\n  Name: IFW (B3 E.26\, IFW Dresden)\n  Street: H
 elmholtzstraße 20\n  City: 01069 Dresden\n  Phone: \n  Fax: \nDescription
 : Polymorphic PtBi2 has been identified as a main candidate to study novel
  electronic states in topological materials. The superconducting y-phase a
 ttracts especial interest as recent reports from surface-sensitive techniq
 ues find strong enhancement of SC when compared to Tc=0.6 K and &amp\;amp\
 ;#956\;0Hc2=0.06 T reported in bulk crystals. I will present our* first fi
 ndings based on electrical resistivity measurements on a high-quality sing
 le crystal of y-PtBi2 grown in our Lab. We detect a SC state with a critic
 al temperature Tc = 1.1 K\, and an enhanced critical field &amp\;amp\;#956
 \;0Hc2 &amp\;amp\;#8819\; 1.5 T with an unusual weak anisotropy. Both Tc a
 nd Hc2 are the highest reported so far in stoichiometric bulk samples at z
 ero pressure. We currently interpret the asymmetric broadening of the resi
 stive transition under field\, along with a low critical current-density J
 c ~ 40 A/cm2 at H = 0\, as result of an inhomogeneous SC state in the samp
 le. * J. Zabala et al.\, arXiv:2309.00105
DTSTAMP:20260508T170005Z
CREATED:20240116T063826Z
LAST-MODIFIED:20240119T063826Z
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