Effect of quantum fluctuations of vortices on reversible magnetization in high-Tc superconductors
L. N. Bulaevskii, J. H. Cho, M. P. Maley, P. Kes, Qiang Li, M. Suenaga, M. Ledvij
DOI 10.1103/PhysRevB.50.3507 · Physical Review B
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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 Tc.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2.2Sr1.9CaCu2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88.1 | Pressure not reported | onset |
| Bi2.14Sr1.39Ca1.13Cu2.00O7.83 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 84.2 | Pressure not reported | onset |
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