Phase diagram of in the presence of columnar defects

D. Zech, S. Lee, H. Keller, G. Blatter

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


Using a combination of high-precision torque and SQUID magnetometry we investigate the irreversibility line of single-crystalline (Formula presented) defected with irradiation-induced columnar pins. We find that the irreversibility line cannot be identified with a shifted melting line but rather follows the crossover line (Formula presented) separating the single-vortex strong pinning regime from the collective weak pinning regime. Good agreement is found with a theoretical analysis accounting for the strong layering of the material.

Original languageEnglish
Pages (from-to)6129-6132
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
Publication statusPublished - 1996


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