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SUMMARY:Superconductivity under Extreme Conditions
DTSTART;VALUE=DATE-TIME:20260403T023000Z
DTEND;VALUE=DATE-TIME:20260403T033000Z
DTSTAMP;VALUE=DATE-TIME:20260405T215400Z
UID:indico-event-4875@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Jochen Wosnitza (Dresden High Magnetic Field Laborat
 ory (HLD-EMFL))\n\nHost: Prof. Vadim Grinenko  Venue: TDLI Meeting Roo
 m N600Tencent Meeting link: https://meeting.tencent.com/dm/TTXEcz9iyeLSMe
 eting ID: 975232008\, no password Abstract:High magnetic fields and super
 conductivity are usually incompatible. The magnetic field favors parallel 
 electron spins\, while superconductivity requires Cooper pairs with antipa
 rallel spins. There exist\, however\, some superconductors\, in which supe
 rconductivity survives to extraordinary high magnetic fields as we found i
 n studies using static and pulsed magnetic fields up to 70 T provided at t
 he Dresden High Magnetic Field Laboratory.As a first example\, I will pres
 ent our robust evidence for the existence of the so-called Fulde-Ferrell-L
 arkin-Ovchinnikov (FFLO) state in quasi-two-dimensional organic supercondu
 ctors. Besides specific-heat and magnetization results\, NMR studies give 
 strong microscopic evidence for the realization of the FFLO state. A one-d
 imensional sinusoidal order-parameter modulation can favorably explain the
  NMR spectra in this high-field low-temperature phase. I will further disc
 uss the recently discovered heavy-fermion superconductor UTe2. This materi
 al shows multiple unconventional superconducting phases under field and pr
 essure with unusually large upper critical fields. For certain field orien
 tations\, superconductivity even reappears at very high fields and survive
 s to a record-breaking upper critical field of about 73 T. The Jaccarino-P
 eter effect is a likely mechanism for the appearance of this reentrant sup
 erconductivity.Biography:Academic education and professional Career:2004-N
 owProfessorship at University of Technology Dresden (TUD) and director of 
 the Hochfeld-Magnetlabor Dresden (HLD) at the HZDR2001-2004Professorship 
 for “Low-Temperature Physics” at the University of Technology Dresden
  (TUD)\, Germany1995Habilitation in Experimental Physics at Universität K
 arlsruhe (TH)\, Germany1990-1991Postdoc at Argonne National Laboratory\, A
 rgonne\, Illinois\, USA1988PhD\, Universität Karlsruhe (TH)\, Germany1985
 Diploma (Physics) at RWTH Aachen\, GermanySelected other (Academic) Positi
 ons:2023-NowMember of the Scientific Advisory Board of the Center for Elec
 tronic Correlations and Magnetism (EKM)\, Augsburg University2015-2021Mem
 ber of the selection committee for the Heinz Maier-Leibnitz prize2011- Now
 Outstanding Referee for the journals of the American Physical Society2008-
  NowHead of the Scientific and Technical Council (Wissenschaftlich-Technis
 cher Rat) of the Helmholtz-Zentrum Dresden-Rossendorf2007-2015Advisory Pr
 ofessorship at the Huazhong University of Science and Technology\, Wuhan\
 , China2004-2012Member of the DFG (Deutsche Forschungsgemeinschaft) review
  board\; 2010 -2012 chair of the review board “Physics of Condensed Matt
 er”2003-2005Dean of student affairs of the physics department at the TU 
 Dresden1999-2001Lecturer at Universität Karlsruhe (TH)\, Germany1986-1999
 Research Associate and Scientific Assistant\, Universität Karlsruhe (TH)\
 , Germany1985-1986Research Associate at RWTH Aachen\n\nhttps://indico-tdli
 .sjtu.edu.cn/event/4875/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/4875/
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