We observed the paramagnetic Meissner effect (PME) in MgB 2 pellets after cooling in low fields of less than 1 Oe. As external magnetic field increases, the paramagnetic response of the sample decreases and disappears completely at 1 Oe. Effect of gamma irradiation on magnetic properties of MgB 2 ha
Paramagnetic Meissner effect in HTSC
β Scribed by N. Knauf; W. Braunisch; G. Bauer; A. Kock; A. Becker; B. Freitag; V. Kataev; B. Roden; D.I. Khomskii
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 180 KB
- Volume
- 194-196
- Category
- Article
- ISSN
- 0921-4526
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We propose that recent experiments on the paramagnetic Meissner effect can be understood in terms of pairing fermion (quasiparticle) spin polarization. The polarization comes from the fact that for Coulomb Fermi systems the polarized state has lower energy than the unpolarized state due to the Coulo
The paramagnetic Meissner effect (PME) or Wohlleben effect, first observed in melt-processed Bi 2 Sr 2 CaCu 2 O 8d ceramics [1,2], has also been observed in Nb disks by several groups [3,4]. In order to clarify the origin of this paramagnetic moment in Nb, which may serve as a model system, we have