Thermodynamic signature for the phase transition at the pseudogap temperature in underdoped YBCO (6.56)
ORAL
Abstract
The physics of the pseudogap, and its connection to the strange metal phase remain poorly understood. The outstanding problem is whether the apparent crossover between these two regimes is a thermodynamic phase boundary. We performed high precision resonant ultrasound spectroscopy measurement on de-twinned monocrystals of underdoped YBCO (6.56) in a broad temperature range up to 300 K. We find a compelling thermodynamic signature for the phase transition at the pseudogap temperature T = 270 K.
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Authors
Victor Fanelli
National High Magnetic Field Laboratory, Los Alamos National Laboratory
Scott Riggs
Stanford University
Stanford
National High Magnetic Field Laboratory, Florida State University
Arkady Shekhter
National High Magnetic Field Laboratory, Florida State University
Yoko Suzuki
National High Magnetic Field Laboratory, Los Alamos National Laboratory
Jonathan Betts
NHMFL-PFF Los Alamos National Laboratory
National High Magnetic Field Laboratory, Los Alamos National Laboratory
Albert Migliori
LANL
National High Magnetic Field Laboratory, Los Alamos National Laboratory
Greg Boebinger
National High Magnetic Field Laboratory
FSU/NHMFL
NHMFL/FSU
National High Magnetic Field Laboratory, Florida State University
Brad Ramshaw
University of British Columbia, Vancouver, Canada
Department of Physics and Astronomy, University of British Columbia
Ruixing Liang
University of British Columbia, Vancouver, Canada
Department of Physics and Astronomy, University of British Columbia
Walter Hardy
University of British Columbia, Vancouver, Canada
Department of Physics and Astronomy, University of British Columbia
Doug Bonn
University of British Columbia, Vancouver, Canada
Department of Physics and Astronomy, University of British Columbia
