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Experimental evidence for Bose-glass behavior in BSCCO-2212 crystals with columnar defects

Technical Report ·
OSTI ID:10194802
;  [1];  [2];  [3]
  1. Laboratoire des Solides Irradies, Palaiseau (France)
  2. Argonne National Lab., IL (United States)
  3. Landau Institute for Theoretical Physics, Moscow (Russian Federation)
+ Show Author Affiliations

Giant, strongly non-logarithmic, magnetic relaxation was observed in BSCCO-2212 crystals irradiated with 5.8 GeV Pb ions, due to flux pinning in columnar defects. The underlying flux creep mechanism was identified as a vortex loop nucleation process proposed by Nelson and Vinokur. The crossover in the creep regime from depinning from a single rod to variable range hopping was observed as a function of rod density. Another type of crossover, from combined pinning involving preexisting defects to purely columnar defect pinning, was observed on crossing the irreversibility line of pristine material.

Research Organization:
Chicago Univ., IL (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
10194802
Report Number(s):
ANL/MSD/PP--80729; ON: DE95002914
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360206
360207
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRYSTAL DEFECTS
HIGH-TC SUPERCONDUCTORS
ION BEAMS
LEAD IONS
MAGNETIC FLUX
MAGNETIC PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STRONTIUM OXIDES