Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session Q55: Ferroelectricity and Magnetism in Twisted 2D materials
3:00 PM–5:36 PM,
Wednesday, March 16, 2022
Room: Hyatt Regency Hotel -Adler
Chair: Jennifer Steele, Trinity University
Abstract: Q55.00013 : Investigation of the Planckian scattering rate in PdCrO2 by high energy electron irradiation
5:24 PM–5:36 PM
Withdrawn
Presenter:
Elina Zhakina
(Max Planck Institute for Plasma Physics)
Authors:
Elina Zhakina
(Max Planck Institute for Plasma Physics)
Philippa H McGuinness
(Max Planck Institute for Chemical Physics of Solids)
Marcin Konczykowski
(Ecole Polytechnique)
Andrew Mackenzie
(Max Planck Institute for Chemical Physics of Solids)
Seunghyun Khim
(Max Planck Institute for Chemical Physics of Solids)
The resistivity of PdCrO2 is linear in temperature above 150 K. This is in contrast to the non-magnetic sister compound PdCoO2 indicating that it is a consequence of the coupling to the Mott-insulating layer. Intriguingly, in the region of the T-linear resistivity, the scattering rate per kelvin is well approximated by the ratio of fundamental constants, kB/h. Numerous other materials reveal the same slope in the T-linear region, in spite of large differences in the microscopic origins of the scattering [2].
To investigate the universal behaviour of the scattering rate, we conducted a systematic study of the influence of point defects on the resistivity of PdCrO2, the results of which we report here. We introduced point defects to focused ion beam sculpted microstructures of PdCrO2 by irradiating them with high-energy electrons. Comparing the results with those on PdCoO2, we confirm that the increase in the resistivity is dominated by point defects in conductive Pd layers. Matthiessen's rule is obeyed in the a T-linear region, indicating the independence of the Planckian dissipation.
[1] Mackenzie, A.P., 2017. Rep. Prog. Phys. 80, 32501
[2] J. A. N. Bruin, H. Sakai, R. S. Perry and A. P. Mackenzie, 2013, Science, Vol 339, Issue 6121, pp. 804-807
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