Effects of sample size on the second magnetization peak in Bi2Sr2CaCuO8+𝛿 at low temperatures

Pramana

B Kalisky¹  A Shaulov¹  Y Yeshurun1¹ 

[1] Institute of Superconductivity, Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel$$

关键词: BSCCO;    vortex matter;    phase transition.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Effects of sample size on the second magnetization peak (SMP) in Bi2Sr2CaCuO8+𝛿 crystals are observed at low temperatures, above the temperature where the SMP totally disappears. In particular, the onset of the SMP shifts to lower fields as the sample size decreases - a result that could be interpreted as a size effect in the order-disorder vortex matter phase transition. However, local magnetic measurements trace this effect to metastable disordered vortex states, revealing the same order-disorder transition induction in samples of different size.

【 授权许可】

Unknown