We present measurements of the magnetic field dependent complex resistivity at 48 GHz in a nearly-optimally doped thin YBa2Cu3O7-δ film. Below Tc the application of the magnetic field leads to a detectable magnetoresistivity. The real part is clearly measurable from our lowest temperature up to Tc, while the imaginary part can be distinguished from zero only for T>87 K. The magnetoresistivity arises from the combined effects of fluxon motion and field-induced superfluid depletion. We discuss whether our data can be described or not by models for the magnetic response in an s-wave or d-wave superconductor.
Complex resistivity of YBCO at 48 GHz in magnetic fields / R., Rogai; R., Marcon; E., Silva; Fastampa, Renato; Giura, Maurizio; Sarti, Stefano; M., Boffa; A. M., Cucolo. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B. - ISSN 0217-9792. - STAMPA. - 14:(2000), pp. 2828-2833. [10.1142/S021797920000296X]
Complex resistivity of YBCO at 48 GHz in magnetic fields
FASTAMPA, Renato;GIURA, Maurizio;SARTI, Stefano;
2000
Abstract
We present measurements of the magnetic field dependent complex resistivity at 48 GHz in a nearly-optimally doped thin YBa2Cu3O7-δ film. Below Tc the application of the magnetic field leads to a detectable magnetoresistivity. The real part is clearly measurable from our lowest temperature up to Tc, while the imaginary part can be distinguished from zero only for T>87 K. The magnetoresistivity arises from the combined effects of fluxon motion and field-induced superfluid depletion. We discuss whether our data can be described or not by models for the magnetic response in an s-wave or d-wave superconductor.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
