Light quantum control of persisting Higgs modes in iron-based superconductors

C. Vaswani; J. H. Kang; M. Mootz; L. Luo; X. Yang; C. Sundahl; D. Cheng; C. Huang; R. H. J. Kim; Z. Liu; Y. G. Collantes; E. E. Hellstrom; I. E. Perakis; C. B. Eom; J. Wang

doi:10.1038/s41467-020-20350-6

Nature Communications (Jan 2021)

Light quantum control of persisting Higgs modes in iron-based superconductors

C. Vaswani,
J. H. Kang,
M. Mootz,
L. Luo,
X. Yang,
C. Sundahl,
D. Cheng,
C. Huang,
R. H. J. Kim,
Z. Liu,
Y. G. Collantes,
E. E. Hellstrom,
I. E. Perakis,
C. B. Eom,
J. Wang

Affiliations

C. Vaswani: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory
J. H. Kang: Department of Materials Science and Engineering, University of Wisconsin-Madison
M. Mootz: Department of Physics, University of Alabama at Birmingham
L. Luo: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory
X. Yang: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory
C. Sundahl: Department of Materials Science and Engineering, University of Wisconsin-Madison
D. Cheng: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory
C. Huang: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory
R. H. J. Kim: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory
Z. Liu: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory
Y. G. Collantes: Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University
E. E. Hellstrom: Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University
I. E. Perakis: Department of Physics, University of Alabama at Birmingham
C. B. Eom: Department of Materials Science and Engineering, University of Wisconsin-Madison
J. Wang: Department of Physics and Astronomy, Iowa State University, and Ames Laboratory

DOI: https://doi.org/10.1038/s41467-020-20350-6
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 9

Abstract

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A collective excitation called Higgs mode may arise in multi-band superconductors via strong interband interaction, but it is yet to be accessed. Here, the authors observe a tunable coherent amplitude oscillation of the order parameter in Ba(Fe1−x Co x )2As2, suggesting appearance and control of the Higgs mode by light tuning interband interaction.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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