Anisotropy and internal-field distribution of MgB2 in the mixed state at low temperatures
Physical Review B - Condensed Matter and Materials Physics Volume 70 Issue 22
Page 224513-1-224513-5
published_at 2004-12-14
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| File | |
| Title ( eng ) |
Anisotropy and internal-field distribution of MgB2 in the mixed state at low temperatures
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| Creator |
Angst M.
Di Castro D.
Eshchenko D. G.
Khasanov R.
Kohout S.
Savic I. M.
Shengelaya A.
Bud'ko S. L.
Canfield P. C.
Jun J.
Karpinski J.
Kazakov S. M.
Raquel A. Ribeiro
Keller H.
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
|
| Volume | 70 |
| Issue | 22 |
| Start Page | 224513-1 |
| End Page | 224513-5 |
| Abstract |
Magnetization and muon spin relaxation on MgB2 were measured as a function of the applied magnetic field at 2 K. Both indicate an inverse-squared penetration depth strongly decreasing with increasing field H below about 1 T. Magnetization also suggests the anisotropy of the penetration depth increases with increasing H, interpolating between a low Hc1 and a high Hc2 anisotropy. Measurements of the torque as a function of the angle between the field and the c axis of the crystal are in agreement with this finding, while also ruling out drastic differences between the mixed state anisotropies of the two basic length scales penetration depth and coherence length.
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| Keywords |
magnesium compounds
mixed state
magnetic anisotropy
muon probes
penetration depth (superconductivity)
coherence length
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2004-12-14 |
| Rights |
Copyright (c) 2004 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0163-1829
[DOI] 10.1103/PhysRevB.70.224513
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.70.224513
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