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Digitale Medien

Mixed-State Hall Effect in HgBa2CaCu2O6+δ Thin Films with Columnar Defects (1998)

Kang, B.W. ; Wu, J.Z. ; Kang, W.N. ; [weitere]

Springer

Journal of superconductivity 11 (1998), S. 163-167

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Details

ISSN: 1572-9605

Schlagwort(e): Superconductivity ; thin film ; columnar defect ; pinning

Quelle: Springer Online Journal Archives 1860-2000

Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik

Notizen: Abstract The mixed state Hall effect has been studied in high quality HgBa2CaCu2O6+δ thin films while the pinning strength is modified by the irraddition of columnar defects. It has been shown that the pinning strength can be significantly improved by columnar defects. The sign reversal in Hall resistivity is found to be nearly independent of pinning while the scaling behavior between Hall resistivity (ρxy) and longitudinal resistivity (ρxx) is influenced by pinning. The exponent β in the scaling law β xy ∼ β xy β decrease from 1.8 ± 0.1 to 1.5 ± 0.1 as pinning is enhanced. This results suggest that the sign reversal and the scaling are unrelated, and pinning is not the mechanism of the sign reversal.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1022656029119

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