Optical excitation of quasiparticle pairs in the vortex core of high-Tc superconductors

K. Karraï, E. J. Choi, F. Dunmore, S. H. Liu, H. D. Drew, Qi Li, D. B. Fenner, Y. D. Zhu, Fu Chun Zhang

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Abstract

A far-infrared resonance has been observed in superconducting YBa2Cu3O7 thin films in the presence of high magnetic fields. It corresponds to the quasiparticle pair creation process inside the vortex core. The resonance frequency is ω0=1.3kTc/Latin small letter h with stroke with a linewidth 1/τ0.6ω. This value for ω0 implies, within BCS theory, a large energy gap in YBa2Cu3O7.

Original languageEnglish (US)
Pages (from-to)152-155
Number of pages4
JournalPhysical Review Letters
Volume69
Issue number1
DOIs
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Karraï, K., Choi, E. J., Dunmore, F., Liu, S. H., Drew, H. D., Li, Q., Fenner, D. B., Zhu, Y. D., & Zhang, F. C. (1992). Optical excitation of quasiparticle pairs in the vortex core of high-Tc superconductors. Physical Review Letters, 69(1), 152-155. https://doi.org/10.1103/PhysRevLett.69.152