Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A43: Strange Metals and Novel Transport Properties
8:00 AM–11:00 AM,
Monday, March 15, 2021
Sponsoring
Unit:
DCMP
Chair: Tarapada Sarkar, University of Maryland, College Park
Abstract: A43.00001 : Measurement of the Planckian scattering rate
8:00 AM–8:12 AM
Live
Presenter:
Gael Grissonnanche
(Cornell University)
Authors:
Gael Grissonnanche
(Cornell University)
Yawen Fang
(Cornell University)
Anaelle Legros
(Université de Sherbrooke)
Simon Verret
(Université de Sherbrooke)
Francis Laliberte
(Université de Sherbrooke)
Clement Collignon
(Université de Sherbrooke)
Amirreza Ataei
(Université de Sherbrooke)
Maxime Dion
(Université de Sherbrooke)
Jianshi Zhou
(University of Texas)
David E Graf
(National High Magnetic Field Laboratory)
Michael Lawler
(Binghamton University)
Paul Goddard
(University of Warwick)
Louis Taillefer
(Université de Sherbrooke)
Brad Ramshaw
(Cornell University)
To directly access the Planckian scattering rate, we measured the angle-dependent magnetoresistance (ADMR) of Nd-LSCO at p = 0.24: a cuprate that demonstrates T-linear resistivity over a wide temperature range at the pseudogap critical point p* [4]. The ADMR reveals a well-defined Fermi surface that precisely agrees with ARPES [5]. In addition, we extract a T-linear scattering rate that has the Planckian value, namely α = 1.4 ± 0.3. Remarkably, this inelastic scattering rate is isotropic.
Our findings suggest that T-linear resistivity in strange metals emerges from a generic isotropic, momentum-independent inelastic scattering rate that reaches the Planckian limit.
[1] J. Zaanen, SciPost Phys. 6, 061 (2019).
[2] J. A. N. Bruin et al., Science 339, 804 (2013)
[3] A. Legros et al., Nat. Phys. 15, 142 (2019)
[4] R. Daou et al., Nat. Phys. 5, 31 (2009).
[5] C. Matt et al., Phys. Rev. B 92, 134524 (2015)
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