Signatures of Enhanced Superconducting Phase Coherence in Optimally Doped Bi2Sr2 Y0.08Ca0.92Cu2 O8+δ Driven by Midinfrared Pulse Excitations
Giusti F, Marciniak A, Randi F, Sparapassi G, Boschini F, Eisaki H, Greven M, Damascelli A, Avella A, Fausti D (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 122
Article Number: 067002
Journal Issue: 6
DOI: 10.1103/PhysRevLett.122.067002
Abstract
Optimally doped cuprate are characterized by the presence of superconducting fluctuations in a relatively large temperature region above the critical transition temperature. We reveal here that the effect of thermal disorder, which decreases the condensate phase coherence at equilibrium, can be dynamically contrasted by photoexcitation with ultrashort midinfrared pulses. In particular, our findings reveal that light pulses with photon energy comparable to the amplitude of the superconducting gap and polarized in plane along the copper-copper direction can dynamically enhance the optical response associated with the onset of superconductivity. We propose that this effect can be rationalized by an effective d-wave BCS model, which reveals that midinfrared pulses result in a transient increase of the phase coherence.
Authors with CRIS profile
Involved external institutions
Università degli Studi di Trieste
Italy (IT)
University of British Columbia
Canada (CA)
National Institute of Advanced Industrial Science and Technology / 産業技術総合研究所 (AIST)
Japan (JP)
University of Minnesota (UMN)
United States (USA) (US)
Università degli Studi di Salerno
Italy (IT)
Italy (IT)
University of British Columbia
Canada (CA)
National Institute of Advanced Industrial Science and Technology / 産業技術総合研究所 (AIST)
Japan (JP)
University of Minnesota (UMN)
United States (USA) (US)
Università degli Studi di Salerno
Italy (IT)
How to cite
APA:
Giusti, F., Marciniak, A., Randi, F., Sparapassi, G., Boschini, F., Eisaki, H.,... Fausti, D. (2019). Signatures of Enhanced Superconducting Phase Coherence in Optimally Doped Bi2Sr2 Y0.08Ca0.92Cu2 O8+δ Driven by Midinfrared Pulse Excitations. Physical Review Letters, 122(6). https://doi.org/10.1103/PhysRevLett.122.067002
MLA:
Giusti, Francesca, et al. "Signatures of Enhanced Superconducting Phase Coherence in Optimally Doped Bi2Sr2 Y0.08Ca0.92Cu2 O8+δ Driven by Midinfrared Pulse Excitations." Physical Review Letters 122.6 (2019).
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