The Interplay between Magnetism and Superconductivity in <math>RNi2B2C</math> <math> (R = Lu, Tm, Er, Ho, Dy, Tb, Gd)</math>

Physics NotePublished

The Interplay between Magnetism and Superconductivity in $<math>RNi_{2}B_{2}C</math>$ $<math> (R = Lu, Tm, Er, Ho, Dy, Tb, Gd)</math>$

M. El Massalami; S.L. Bud’ko; B. Giordanengo; E. M. B. Saitovitch

1994

Authors: M. El Massalami; S.L. Bud’ko; B. Giordanengo; E. M. B. Saitovitch
Type: Physics Note
Status: Published
Publication date: 1994
Description: The superconducting and magnetic phase diagram (characteristic temperatures versus effective ionic-radii) of the <math>RNi_{2}B_{2}C\,\!</math> <math>(R = Lu,Tm,Er,Ho,Dy,Tb,Gd)\,\!</math> compounds are considered. Although the gradual degradation of superconductivity can be scaled to the de Gennes factor, <math>(g-1)^{2}J(J+1),\,\!</math> the unique reentrant behavior of the <math>HoNi_{2}B_{2}C\,\!</math> compound and the abrupt quenching of superconductivity for R lighter than Ho are most probably unaccountable within this scheme. Rather, it is argued that their low-T magnetic and transport properties as well as the main features of the interplay between magnetism and superconductivity can be accounted for if the low-T magnetism of <math> HoNi_{2}B_{2}C\,\!</math>, as reported by T.E. Grigereit et al, is generalized to the other isomorphous R-members. Thus the onset of the 4f-moments antiferromagnetic state at <math>T_1\,\!</math> is accompanied by an oscillatory component, which transforms to a commensurate antiferromagnetic state at <math>T_2\,\!</math> . For <math>HoNi2B2C\,\!</math>, the pressure and magnetic field influence on <math>T_c\,\!</math>, <math>T_1\,\!</math> and <math>T_2\,\!</math> will be discussed.
Year: 1994
Number: CBPF-NF-061/94
Linked to a thesis: No
Linked to a grant: No