Abstract
We demonstrate the magnetic-field distribution of the pure vortex state in lightly doped Mg1-xAlxB2 (x ≤0.025) powder samples, by using 11B nuclear magnetic resonance in magnetic fields of 23.5 and 47 kOe. The magnetic-field distribution at T=5 K is Al-doping dependent, revealing a considerable decrease of anisotropy in respect to pure MgB2. This result correlates nicely with magnetization measurements and is consistent with σ-band hole driven superconductivity for MgB2.
| Original language | English |
|---|---|
| Article number | 184514 |
| Pages (from-to) | 1845141-1845145 |
| Number of pages | 5 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 65 |
| Issue number | 18 |
| Publication status | Published - 2002 May 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Pissas, M., Papavassiliou, G., Karayanni, M., Fardis, M., Maurin, I., Margiolaki, I., Prassides, K., & Christides, C. (2002). Magnetization and 11B NMR study of Mg1-xAlxB2 superconductors. Physical Review B - Condensed Matter and Materials Physics, 65(18), 1845141-1845145. [184514].