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An Investigation of the Irreversibility line in Bi_2Sr_2CaCu_2O_8 Single Crystals


Supple, F.; Campbell, A.; Cooper, J.R.
An Investigation of the Irreversibility line in Bi_2Sr_2CaCu_2O_8 Single Crystals // Physica C, 242 (1995), 3-4; 233-245 doi:10.1016/0921-4534(94)02411-1 (međunarodna recenzija, članak, znanstveni)


Naslov
An Investigation of the Irreversibility line in Bi_2Sr_2CaCu_2O_8 Single Crystals

Autori
Supple, F. ; Campbell, A. ; Cooper, J.R.

Izvornik
Physica C (0921-4534) 242 (1995), 3-4; 233-245

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Sažetak
Measurements of the irreversibility line for a BSCCO single crystal have been made using resistivity, AC susceptibility (ACS), and DC magnetisation. The ACS results were calibrated by measuring a square of silver with similar dimensions. The results are in agreement with previous work which interpreted the AC susceptibility in terms of a skin-depth effect rather than a phase transition. However, discrepancies appear at high fields and a number of explanations are postulated. The behaviour of the resistivity can be divided into two regimes. The low-resistance regime is explained well by the thermally activated flux flow (TAFF) model. At high resistivities the pinning centres are ineffective and flux-flow resistivity should be dominant. However, the Bardeen-Stephen model does not work, but an alternative explanation based on fluctuations fits well.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00350103

Ustanove
Institut za fiziku, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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