ISSN:
1434-6036
Keywords:
78.30.-j
;
74.70.Hk
;
74.70.Vy
;
07.60.Fs
;
07.65.Gj
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have measured the complex dielectric function of pure and Fe-doped YBa2Cu3O7 ceramics, between 10 and 150 cm−1 and 20 and 300 K, with a far-infrared, rotating-analyzer laser ellipsometer. The superconducting phase transition and the gap energy are clearly observable. The undoped ceramic exhibits remarkable dielectric hysteresis between 110 K and 190 K. This points to a still unidentified phase which we observe to be sensitive to a weak magnetic field.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01316818
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