Effect of the reversibility region on the low-temperature vortex structure 
imaged by Bitter magnetic decoration

Pardo, F.; Mackenzie, A. P.; de la Cruz, F.; Guimpel, J.

doi:10.1103/PhysRevB.55.14610

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Effect of the reversibility region on the low-temperature vortex structure imaged by Bitter magnetic decoration

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引用

Pardo, F., Mackenzie, A. P., de la Cruz, F., & Guimpel, J. (1997). Effect of the reversibility region on the low-temperature vortex structure imaged by Bitter magnetic decoration. Physical Review B, 55(21), 14610-14613. doi:10.1103/PhysRevB.55.14610.

引用: https://hdl.handle.net/11858/00-001M-0000-0018-EB49-C

要旨

We have combined magnetic measurements and imaging of the vortex lattice at low fields in Tl2Ba2CuO6-δ single crystals with different oxygen content. Those with high critical temperature Tc>80 K have a reversible region while those with low Tc<30 K have an irreversible magnetization in the whole range of temperatures, up to Tc. The presence of the reversible region allows the formation of ordered vortex structures, while amorphous structures are obtained when no reversible region is present below Tc. The results are discussed in terms of vortex nucleation processes in the individual pinning regime.