Pauli paramagnetic effects on vortices in superconducting TmNi2B2C
| Title | Pauli paramagnetic effects on vortices in superconducting TmNi2B2C |
| Publication Type | Journal Article |
| Year of Publication | 2007 |
| Authors | DeBeer-Schmitt L, Eskildsen MR, Ichioka M, Machida K, Jenkins N, Dewhurst CD, Abrahamsen AB, Bud'ko SL, Canfield PC |
| Journal Title | Physical Review Letters |
| Volume | 99 |
| Pages | 167001 |
| Date Published | Oct |
| Type of Article | Article |
| ISBN Number | 0031-9007 |
| Accession Number | ISI:000250296000059 |
| Keywords | ii superconductors, magnetic order, vortex state |
| Abstract | The magnetic field distribution around the vortices in TmNi2B2C in the paramagnetic phase was studied experimentally as well as theoretically. The vortex form factor, measured by small-angle neutron scattering, is found to be field independent up to 0.6H(c2) followed by a sharp decrease at higher fields. The data are fitted well by solutions to the Eilenberger equations when paramagnetic effects due to the exchange interaction with the localized 4f Tm moments are included. The induced paramagnetic moments around the vortex cores act to maintain the field contrast probed by the form factor. |
| DOI | 10.1103/PhysRevLett.99.167001 |
| Alternate Journal | Phys. Rev. Lett. |
