Nota de FísicaPublicado
The Interplay between Magnetism and Superconductivity in
M. El Massalami; S.L. Bud’ko; B. Giordanengo; E. M. B. Saitovitch
1994
Dados da publicação
- Autores
- M. El Massalami; S.L. Bud’ko; B. Giordanengo; E. M. B. Saitovitch
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1994
- Descrição
- 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.
- Ano
- 1994
- Número
- CBPF-NF-061/94
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não