Flux pinning behavior in twin boundaries of single crystal YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}
Conference
·
OSTI ID:10106390
We present magnetoresistance measurements up to H = 6 Tesla using a crossed magnetic field technique to demonstrate pinning by twin boundaries (TB) in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}. We investigate geometries for H {parallel} c {parallel} TB, H {parallel} ab {parallel} TB and for H rotated within a twin boundary plane. We find the critical angle {Theta}{sup *} for TB pinning to be field dependent and field independent for H {parallel} c {parallel} TB and H {parallel} ab {parallel} TB respectively in fields up to 6 Tesla and temperatures near {Tc}. In addition, we report on the full phase diagram for the onset of TB pinning. The TB pinning onset temperature coincides with the ``shoulder`` feature observed in the resistive transition in magnetic fields in these crystals.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10106390
- Report Number(s):
- ANL/CP--74636; CONF-911096--4; ON: DE92004124
- Country of Publication:
- United States
- Language:
- English
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