Study of Resistive Superconducting Transition of Thallium Based Superconductors

• Authors: W. Woch , R. Zalecki , M. Chrobak , A. Kołodziejczyk , G. Gritzner
• Languages of publication: EN

Abstracts

EN

A width and shape of resistive transition as well as thermal fluctuations of the thallium based superconductors were analyzed theoretically. The applied magnetic field widens the resistive transition according to the following formula: ΔT=CH^{m}+ΔT_{0}. The exponent m fluctuates around 2/3 and depends on vortex structure and strength of the pinning force. The shape of the resistive transition was fitted by two models: the first one based on Ambegaokar-Halperin theory and the other one based on Anderson-Kim theory expressed by the exponential formula. Critical fluctuations were analyzed on the basis of magnetoresistance measurements results. The critical exponents have been calculated above the critical temperature T_{c} as well as for temperatures close to the zero resistance critical temperature.

Keywords

EN

74.72.-h; 74.40.n; 74.20.De; 74.25.Ha

Discipline

• 74.72.-h: Cuprate superconductors
• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.20.De: Phenomenological theories (two-fluid, Ginzburg-Landau, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 4
• Pages: 789-795

Dates

published

2012-04

Contributors

author

W. Woch

• Solid State Physics Dept., AGH University of Science and Technology , al. Mickiewicza 30, PL 30-059, Kraków, Poland

author

R. Zalecki

• Solid State Physics Dept., AGH University of Science and Technology , al. Mickiewicza 30, PL 30-059, Kraków, Poland

author

M. Chrobak

• Solid State Physics Dept., AGH University of Science and Technology , al. Mickiewicza 30, PL 30-059, Kraków, Poland

author

A. Kołodziejczyk

• Solid State Physics Dept., AGH University of Science and Technology , al. Mickiewicza 30, PL 30-059, Kraków, Poland

author

G. Gritzner

• Institute for Chemical Technology of Inorganic Materials, Johannes Kepler University, A 4040 Linz, Austria

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Identifiers

DOI

10.12693/APhysPolA.121.789