Hysteresis in mesoscopic superconducting disks: The Bean-Livingston barrier

P. Singha Deo; V. A. Schweigert; F. M. Peeters

doi:10.1103/PhysRevB.59.6039

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Hysteresis in mesoscopic superconducting disks: The Bean-Livingston barrier

P. Singha Deo, V. A. Schweigert, F. M. Peeters

DOI 10.1103/PhysRevB.59.6039 · Physical Review B

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Abstract

Depending on the size of mesoscopic superconducting disks, the magnetization can show hysteretic behavior which we explain by using the Ginzburg-Landau (GL) theory and properly taking into account the demagnetization effects due to geometrical form factors. In large disks the hysteresis is due to the Bean-Livingston surface barrier while in small disks it is the volume barrier which is responsible for it. Although the sample magnetization is diamagnetic (negative) we show that the measured magnetization can be positive at certain fields as observed experimentally and which is a consequence of both the demagnetization effect and the experimental setup.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown