Effect of quantum fluctuations of vortices on reversible magnetization in high-Tcsuperconductors
- 1 August 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 50 (5) , 3507-3510
- https://doi.org/10.1103/physrevb.50.3507
Abstract
The field (B) and temperature dependence of reversible magnetization M in Bi (2:2:1:2) single crystals is measured for the orientation of the field along the c axis. The slope of the curve M vs lnB decreases remarkably with field below 70 K. In the mean-field approach this slope should be almost B independent. We explain this change of slope by the quantum fluctuations of vortices. We show that for magnetization quantum fluctuations are important at all temperatures except in a narrow region near .
Keywords
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