Publication: Probing superconductivity in MgB2 confined to magnetic field tuned cylinders by means of critical fluctuations
Probing superconductivity in MgB2 confined to magnetic field tuned cylinders by means of critical fluctuations
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Weyeneth, S., Schneider, T., Zhigadlo, N. D., Karpinski, J., & Keller, H. (2008). Probing superconductivity in MgB2 confined to magnetic field tuned cylinders by means of critical fluctuations. Journal of Physics: Condensed Matter, 20, 135208. https://doi.org/10.1088/0953-8984/20/13/135208
Abstract
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We report and analyze reversible magnetization measurements on a high quality MgB2 single crystal in the vicinity of the zero-field transition temperature, T_{\mathrm {c}}\simeq 38.83 K, at several magnetic fields up to 300 Oe, applied along the c-axis. Although MgB2 is a two-gap superconductor our scaling analysis uncovers remarkable consistency with 3D-xy critical behavior, revealing that close to criticality the order parameter is a single complex scalar as in 4He. This opens up the window onto the exploration of the magnetic fiel
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- Weyeneth, S
- Schneider, T
- Zhigadlo, N D
- Karpinski, J
- Keller, H
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Weyeneth, S., Schneider, T., Zhigadlo, N. D., Karpinski, J., & Keller, H. (2008). Probing superconductivity in MgB2 confined to magnetic field tuned cylinders by means of critical fluctuations. Journal of Physics: Condensed Matter, 20, 135208. https://doi.org/10.1088/0953-8984/20/13/135208
