Sharp magnetoabsorption resonances in the vortex state of Bi2Sr2CaCu2O8+δ

Ophelia K.C. Tsui, N. P. Ong, Y. Matsuda, Y. F. Yan, J. B. Peterson

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We report the observation of narrow resonances in the absorption of mm wavelength radiation (30 to 50 GHz) in the vortex state of Bi2Sr2CaCu2O8+δ . When the applied field B is swept at fixed frequency ω, the absorption displays two distinct Lorentzian peaks at the resonance fields B0 and B1. The resonance frequency decreases with increasing field, consistent with anticyclotronic behavior. At fixed ω, B0 and B1 also vary strongly with temperature T. B0 and B1 increase to a sharp maximum when T crosses the vortex solid-to-liquid transition line inferred from resistivity results. The coupling of cyclotron resonance with collective modes giving rise to an anticyclotronic mode is discussed.

Original languageEnglish (US)
Pages (from-to)724-727
Number of pages4
JournalPhysical review letters
Issue number5
StatePublished - 1994

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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