Classification and characterization of nonequilibrium Higgs modes in unconventional superconductors

L. Schwarz, B. Fauseweh, N. Tsuji, N. Cheng, N. Bittner, H. Krull, M. Berciu, G. S. Uhrig, A. P. Schnyder, S. Kaiser and D. Manske ()
Additional contact information
L. Schwarz: Max Planck Institute for Solid State Research
B. Fauseweh: Max Planck Institute for Solid State Research
N. Tsuji: RIKEN Center for Emergent Matter Science (CEMS)
N. Cheng: University of British Columbia
N. Bittner: Max Planck Institute for Solid State Research
H. Krull: Technische Universität Dortmund
M. Berciu: University of British Columbia
G. S. Uhrig: Technische Universität Dortmund
A. P. Schnyder: Max Planck Institute for Solid State Research
S. Kaiser: Max Planck Institute for Solid State Research
D. Manske: Max Planck Institute for Solid State Research

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Recent findings of new Higgs modes in unconventional superconductors require a classification and characterization of the modes allowed by nontrivial gap symmetry. Here we develop a theory for a tailored nonequilibrium quantum quench to excite all possible oscillation symmetries of a superconducting condensate. We show that both a finite momentum transfer and quench symmetry allow for an identification of the resulting Higgs oscillations. These serve as a fingerprint for the ground state gap symmetry. We provide a classification scheme of these oscillations and the quench symmetry based on group theory for the underlying lattice point group. For characterization, analytic calculations as well as full scale numeric simulations of the transient optical response resulting from an excitation by a realistic laser pulse are performed. Our classification of Higgs oscillations allows us to distinguish between different symmetries of the superconducting condensate.

Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-019-13763-5 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-019-13763-5

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-019-13763-5

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().