Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session B57: Superconductivity: Response to E&M Fields
11:30 AM–2:18 PM,
Monday, March 14, 2022
Room: Hyatt Regency Hotel -Clark
Sponsoring
Unit:
DCMP
Chair: Hikaru Ueki, Northwestern University
Abstract: B57.00003 : Microwave investigation of Higgs Mode in a superconducting wire
11:54 AM–12:06 PM
Presenter:
Laurine M Marian
(Universite de Sherbrooke)
Authors:
Laurine M Marian
(Universite de Sherbrooke)
Edouard Pinsolle
(Universite de Sherbrooke)
Samuel Houle
(Universite de sherbrooke)
Christian Lupien
(Universite de Sherbrooke)
Bertrand Reulet
(Universite de Sherbrooke)
Observation of Higgs modes in superconductors have been performed in the THz range [3]. A study in the microwave range could enable new measurement such as non-local conductivity to probe its propagation.
We studied Titanium samples for which 2Δ is of the order of 10-30 GHz and can be tuned with the sample thickness. In this experiment we present a precise and quantitative measurement of the high frequency complex impedance of a superconducting wire in the microwave range. In the absence of DC current we compare our results with BCS theory at equilibrium. With current we observe a feature at frequency 2Δ which behaves as predicted in [2] with a width much larger than expected.
This experiment is the first step toward the integration of Higgs mode in electronic circuit.
[1] Phys. Rev. 112,1900 (1958)
[2] PRL 118, 047001 (2017)
[3] PRL 111, 057002 (2013)
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