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Superconductivity associated with ferromagnetic domain walls in HoMo/sub 6/S/sub 8/ and (Er/sub 1-x/Sn/sub x/)Er/sub 4/Rh/sub 6/Sn/sub 18/

Journal Article · · J. Appl. Phys.; (United States)
DOI:https://doi.org/10.1063/1.335147· OSTI ID:5864514
The compounds HoMo/sub 6/S/sub 8/ and (Er/sub 1-x/Sn/sub x/)Er/sub 4/Rh/sub 6/Sn/sub 18/ (respectively, Ho-Mo-S and Er-Rh-Sn in the following) are known to be reentrant superconductors, the superconductivity being destroyed by the onset of long-range ferromagnetic order at low temperature. For the first time, the percolation of domain ''walls'' superconductivity has been produced below 0.2 K in Ho-Mo-S single crystals, confirming a systematic study of sintered samples and theoretical expectations. In addition, the ac susceptibility of Er-Rh-Sn single crystals, measured below 0.5 K, is large and positive for large ac fields and nearly equal to -1/4..pi.. for low ac fields. This fact confirms the existence of superconducting domain ''walls'' which screen the ac field.
Research Organization:
Centre de Recherches sur les Tres Basses Temperatures, C. N. R. S., B. P. 166 X, 38042 Grenoble Cedex, France
OSTI ID:
5864514
Journal Information:
J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 57:8; ISSN JAPIA
Country of Publication:
United States
Language:
English