Phase-resolved Higgs response in superconducting cuprates.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
14 Apr 2020
14 Apr 2020
Historique:
received:
06
08
2019
accepted:
02
03
2020
entrez:
15
4
2020
pubmed:
15
4
2020
medline:
15
4
2020
Statut:
epublish
Résumé
In high-energy physics, the Higgs field couples to gauge bosons and fermions and gives mass to their elementary excitations. Experimentally, such couplings can be inferred from the decay product of the Higgs boson, i.e., the scalar (amplitude) excitation of the Higgs field. In superconductors, Cooper pairs bear a close analogy to the Higgs field. Interaction between the Cooper pairs and other degrees of freedom provides dissipation channels for the amplitude mode, which may reveal important information about the microscopic pairing mechanism. To this end, we investigate the Higgs (amplitude) mode of several cuprate thin films using phase-resolved terahertz third harmonic generation (THG). In addition to the heavily damped Higgs mode itself, we observe a universal jump in the phase of the driven Higgs oscillation as well as a non-vanishing THG above T
Identifiants
pubmed: 32286291
doi: 10.1038/s41467-020-15613-1
pii: 10.1038/s41467-020-15613-1
pmc: PMC7156672
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1793Références
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