Электронный каталог

Статья

Anisimov, M.
Magnetotransport and Rich H-T Phase Diagram in Moderately Heavy Fermionic Antiferromagnet YbCoC&sub(2) / M.Anisimov, D.Salamatin, [a.o.]. – Text : electronic // Journal of Magnetism and Magnetic Materials. – 2026. – Vol. 641. – P. 173849. – URL: https://doi.org/10.1016/j.jmmm.2026.173849. – Bibliogr.: 51.

Antiferromagnet (AFM) YbCoC&sub(2) with the highest for Yb-based compounds Neel temperature 𝑇&sub(𝑁) ≈ 25.8 K is studied by detailed measurements of galvanomagnetic properties [electrical resistivity, transverse magnetoresistance (TMR)] at temperatures 2–300 K and magnetic fields up to 82 kOe. Negative quadratic TMR detected in paramagnetic (PM) state is explained in terms of Yosida’s model, which takes into account the scattering of the conduction electrons on localized magnetic moments (LMMs) of rare-earth (RE) ions. The analysis of both local and bulk magnetic susceptibilities allows proposing the existence of short-range correlations in wide PM vicinity of 𝑇&sub(𝑁) . The polaronic scenario is suggested. The data obtained allow us to detect the appearance of field-induced TMR hysteresis inside the magnetically ordered state. Magnetic 𝐻-𝑇 diagram is also reconstructed and a few additional phase boundaries are assumed. One of them is interpreted as 𝐴-phase. It stabilizes in the range 71–77 kOe on the boundary between commensurate and incommensurate magnetic structures at 𝑇 *{ 8–9 K.



Спец.(статьи,препринты) = С 326 - Квантовая теория систем из многих частиц. Квантовая статистика
ОИЯИ = ОИЯИ (JINR)2026