Chu, Hao, Kim, Min-Jae, Katsumi, Kota ORCID: 0000-0002-4397-9189, Kovalev, Sergey ORCID: 0000-0002-2290-1016, Dawson, Robert David, Schwarz, Lukas ORCID: 0000-0001-6158-6891, Yoshikawa, Naotaka ORCID: 0000-0002-2291-8002, Kim, Gideok, Putzky, Daniel, Li, Zhi Zhong, Raffy, Helene, Germanskiy, Semyon, Deinert, Jan-Christoph, Awari, Nilesh ORCID: 0000-0002-1848-8556, Ilyakov, Igor, Green, Bertram, Chen, Min, Bawatna, Mohammed ORCID: 0000-0002-2382-3363, Cristiani, Georg, Logvenov, Gennady, Gallais, Yann ORCID: 0000-0002-0589-1522, Boris, Alexander, V, Keimer, Bernhard, Schnyder, Andreas P., Manske, Dirk, Gensch, Michael, Wang, Zhe ORCID: 0000-0001-7464-5408, Shimano, Ryo and Kaiser, Stefan ORCID: 0000-0001-9862-2788 (2020). Phase-resolved Higgs response in superconducting cuprates. Nat. Commun., 11 (1). LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

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Abstract

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-c. These findings indicate coupling of the Higgs mode to other collective modes and potentially a nonzero pairing amplitude above T-c. Interaction between Cooper pairs and other collective excitations may reveal important information about the pairing mechanism. Here, the authors observe a universal jump in the phase of the driven Higgs oscillations in cuprate thin films, indicating the presence of a coupled collective mode, as well as a nonvanishing Higgs-like response at high temperatures, suggesting a potential nonzero pairing amplitude above Tc.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Chu, HaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, Min-JaeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Katsumi, KotaUNSPECIFIEDorcid.org/0000-0002-4397-9189UNSPECIFIED
Kovalev, SergeyUNSPECIFIEDorcid.org/0000-0002-2290-1016UNSPECIFIED
Dawson, Robert DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schwarz, LukasUNSPECIFIEDorcid.org/0000-0001-6158-6891UNSPECIFIED
Yoshikawa, NaotakaUNSPECIFIEDorcid.org/0000-0002-2291-8002UNSPECIFIED
Kim, GideokUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Putzky, DanielUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, Zhi ZhongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Raffy, HeleneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Germanskiy, SemyonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deinert, Jan-ChristophUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Awari, NileshUNSPECIFIEDorcid.org/0000-0002-1848-8556UNSPECIFIED
Ilyakov, IgorUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Green, BertramUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chen, MinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bawatna, MohammedUNSPECIFIEDorcid.org/0000-0002-2382-3363UNSPECIFIED
Cristiani, GeorgUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Logvenov, GennadyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gallais, YannUNSPECIFIEDorcid.org/0000-0002-0589-1522UNSPECIFIED
Boris, Alexander, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Keimer, BernhardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schnyder, Andreas P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Manske, DirkUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gensch, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, ZheUNSPECIFIEDorcid.org/0000-0001-7464-5408UNSPECIFIED
Shimano, RyoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kaiser, StefanUNSPECIFIEDorcid.org/0000-0001-9862-2788UNSPECIFIED
URN: urn:nbn:de:hbz:38-337166
DOI: 10.1038/s41467-020-15613-1
Journal or Publication Title: Nat. Commun.
Volume: 11
Number: 1
Date: 2020
Publisher: NATURE PUBLISHING GROUP
Place of Publication: LONDON
ISSN: 2041-1723
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
LIGHT-INDUCED SUPERCONDUCTIVITY; CHARGE-DENSITY-WAVE; FLUCTUATIONS; PLASMONS; MODEMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/33716

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