Naslov
Antiferromagnetic Correlations and Weak Ferromagnetism in aTDAE+−C60−Single Crystal

Autori
Blinc, R. ; Pokhodnia, K. ; Cevc, P. ; Arčon, D. ; Omerzu, A. ; Mihailović, D. ; Venturini, P. ; Golič, L. ; Trontelj, Z. ; Lužnik, J. ; Jegličič, Z. ; Pirnat, J.

Izvornik
Physical Review Letters (0031-9007) 76 (1996), 3; 523-526

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
MAGNETIC-PROPERTIES ; TDAE-C-60

Sažetak
The ESR spectra of a TDAE(+)-C-60(-) single crystal show the existence of antiferromagnetic (AFM) correlations between the unpaired spins on neighboring C-60(-) ions along the c axis and spin canting which leads, below T-c, to weak ferromagnetism along a direction perpendicular to the c axis. This suggests that a Dzyaloshinsky-Moriya type mechanism is responsible for ferromagnetic ordering rather than itinerant ferromagnetism. The incomplete orientational ordering of the C-60(-) ions leads to a distribution of exchange coupling constants resulting in spin-glass type behavior which coexists with long range ferromagnetic ordering below T-c. The observation of AFM correlations may help to understand why the same basic molecule C-60 can support such different phenomena as ferromagnetism (in TDAE- C-60) and superconductivity (in, e.g., K3C60).

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Interdisciplinarne prirodne znanosti

POVEZANOST RADA