Raman study of superconducting energy gap in YBa2Cu3O7–<i>δ</i> superconductors
V. P. GnezdilovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. V. EremenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. S. KurnosovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovA. V. Peschanskiı̆Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. I. FominPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Kharkov
ABI
Аннотация
Raman spectra from four ceramic YBa2Cu3O7–δ samples are measured. An analysis of changes in the spectra of superconducting samples upon cooling below the superconducting transition temperature Tc reveals an asymmetric singularity whose low-frequency boundary determines the energy gap width. The dependence of the gap parameter on Tc is determined, and the temperature behavior of the superconducting gap parameter is investigated.
Ҳали таржима қилинмаган
Мавзулар
Идентификаторлар
Иқтибослар ва манбалар
0 та иқтибос14 та фойдаланилган манба