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Title: Higgs Mode in the d -Wave Superconductor Bi 2 Sr 2 CaCu 2 O 8 + x Driven by an Intense Terahertz Pulse

Journal Article · · Physical Review Letters
 [1];  [2];  [1];  [3];  [4];  [4]; ORCiD logo [4];  [5];  [6];  [1]
  1. The Univ. of Tokyo, Tokyo (Japan)
  2. RIKEN Center for Emergent Matter Science (CEMS), Wako (Japan)
  3. The Univ. of Tokyo, Tokyo (Japan); JST, PRESTO, Kawaguchi (Japan)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. The Univ. of Tokyo, Tokyo (Japan); ETH Zurich, Zurich (Switzerland); National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan)
  6. The Univ. of Tokyo, Tokyo (Japan); Univ. Paris Diderot, Paris Cedex (France)

We investigated the terahertz (THz)-pulse driven nonlinear response in the d-wave cuprate superconductor Bi2Sr2CaCu2O8+x (Bi2212) using a THz pump near-infrared probe scheme in the time domain. We have observed an oscillatory behavior of the optical reflectivity that follows the THz electric field squared and is strongly enhanced below Tc. The corresponding third-order nonlinear effect exhibits both A1g and B1g symmetry components, which are decomposed from polarization-resolved measurements. Comparison with a BCS calculation of the nonlinear susceptibility indicates that the A1g component is associated with the Higgs mode of the d-wave order parameter.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1435733
Alternate ID(s):
OSTI ID: 1426018
Report Number(s):
BNL-203580-2018-JAAM; PRLTAO; TRN: US1900094
Journal Information:
Physical Review Letters, Vol. 120, Issue 11; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

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Cited By (7)

Terahertz Electrodynamics in Transition Metal Oxides journal September 2019
Classification and characterization of nonequilibrium Higgs modes in unconventional superconductors journal January 2020
Impact of damping on the superconducting gap dynamics induced by intense terahertz pulses journal August 2019
Higgs oscillations in time-resolved optical conductivity journal November 2019
Polarization-Sensitive Electro-Optic Sampling of Elliptically-Polarized Terahertz Pulses: Theoretical Description and Experimental Demonstration journal January 2019
Theory of ultrafast phenomena in photoexcited semiconductors journal August 2002
Higgs Oscillations in time-resolved Optical Conductivity text January 2019