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Pinning in -axis oriented films studied with angular dependent magnetoresistivity
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10.1063/1.2181652
/content/aip/journal/apl/88/10/10.1063/1.2181652
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/10/10.1063/1.2181652

Figures

Image of FIG. 1.
FIG. 1.

Angular dependence of magnetoresistivity measured in a magnetic field at different temperatures close to on YBCO film 6. Inset: the depinning angle and normalized magnitude of the minimum at [defined as ] measured as a function of temperature. The lines are guides to the eye.

Image of FIG. 2.
FIG. 2.

Angular dependence of magnetoresistivity measured at a temperature of for different magnetic fields on YBCO film 6. Inset: the depinning angle and normalized magnitude of the minimum at [defined as ] measured as a function of magnetic field. The lines are guides to the eye.

Image of FIG. 3.
FIG. 3.

Temperature dependence of the pinning energy per unit length of a planar defect in YBCO films 6 and 8 in a constant magnetic field. was calculated from Eq. 11 derived by Paulius et al. (see Ref. 5), using the experimental values of the depinning angle .

Tables

Generic image for table
Table I.

Parameters that describe YBCO thin films Nos. 1–8. is the transition temperature at and . is the midpoint transition temperature at , taken as the temperature at which has a maximum. is the critical current density at . It was determined from the self-field of the persistent current at the critical level, induced in ring-shaped samples (see Ref. 4). FWHM is the full-width-half-maximum of a (005) x-ray diffraction peak. is the depinning angle defined as described in the text. is the normalized magnitude of the minimum at . Both and are listed for and . Only films 6, 7, and 8 on this list exhibit a minimum in the angular dependence of magnetoresistivity close to (PLD: pulsed laser deposition; rf-MAG; radio frequency (rf) magnetron sputter depositions; and dc-MAG: direct current (rf) magnetron sputter depositions).

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/content/aip/journal/apl/88/10/10.1063/1.2181652
2006-03-06
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Pinning in c-axis oriented YBa2Cu3O7−δ films studied with angular dependent magnetoresistivity
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/10/10.1063/1.2181652
10.1063/1.2181652
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