Impurity substituted single crystals of untwinned YBa 2 (Cu 1Γx M x ) 3 O 6.95 (M = Zn, Ni) have been prepared and the Zn and Ni substitution effect on the vortex phase diagram has been studied as a function of impurity concentration x. In YBa 2 (Cu 1Γx M x ) 3 O 6.95 with small amount of impurity [
Vortex state in YBa2Cu3Oy crystals: vortex phase diagram and tunneling spectroscopy in magnetic field
β Scribed by N. Kobayashi; T. Nishizaki; K. Shibata; T. Sasaki
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 384 KB
- Volume
- 346-347
- Category
- Article
- ISSN
- 0921-4526
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Low temperature scanning tunneling microscopy (LT-STM) studies have been performed on the LT-cleaved and the chemically etched surface of YBa 2 Cu 3 O y single crystals. We find that the vortex structure can be observed on the chemically etched surface of YBa 2 Cu 3 O y as a function of temperature
The voltage-noise measurements in epitaxial YBa2Cu30 x films have been extended to the case of a high magnetic field. In a magnetic field, two noise peaks, one from the vortex motion and the other from the resistance fluctuations, were observed. The location of the vortex-motion induced peak was fou