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SUMMARY:Analysis of magnetic and quadrupole resonance in cuprates
DTSTART:20250509T151500
DTSTAMP:20260427T133439Z
UID:f281379be8ae0566ee1e0d5dfb48712d9bdcadd98c3980d67c46c87d
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Kun Jiang Institute of Physics\, Chinese Academy of Scienc
 es\, Beijing\, China\nThe Hebel-Slichter coherence peak\, observed in the 
 spin-lattice relaxation rate 1/T1 just below the critical temperature Tc\,
  serves as a crucial experimental validation of the Bardeen-Cooper-Schrief
 fer pairing symmetry in conventional superconductors. However\, no coheren
 ce peak in 1/T1 has been observed in unconventional superconductors like c
 uprates. Recently\, we identified a coherence peak for the first time usin
 g nuclear quadrupole resonance on YBa2Cu4O8\, pointing to a distinctive pa
 iring symmetry. In this work\, we carry out a systematic investigation of 
 the coherence peak in unconventional superconductors as they transition in
 to the superconducting phase at Tc. Using d-wave cuprates as an example\, 
 we reveal the presence of a coherence peak below Tc in the charge channel.
  The nuclear quadrupole relaxation rate is shown to be an effective method
  for detecting this unconventional coherence peak\, with the superconducti
 ng coherence factor playing a pivotal role in its emergence.
LOCATION:PH L1 503 https://plan.epfl.ch/?room==PH%20L1%20503 https://epfl.
 zoom.us/j/89778378177
STATUS:CONFIRMED
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