J. Phys. IV France
Volume 10, Numéro PR3, March 2000
Organic Superconductivity "20th Anniversary"
Page(s) Pr3-205 - Pr3-210
Organic Superconductivity "20th Anniversary"

J. Phys. IV France 10 (2000) Pr3-205-Pr3-210

DOI: 10.1051/jp4:2000322

Nature of the magnetic ground state in the A1C60 series

C. Coulon1, J. Duval1, C. Lavergne1, A.L. Barra2 and A. Pénicaud1

1  Centre de Recherche Paul Pascal, UPR 8641 du CNRS, Université de Bordeaux I, avenue Schweitzer, 33600 Pessac, France
2  LCMI, MPI-CNRS, BP. 166, 38042 Grenoble Cedex 9, France

The magnetic properties of A1C60 salts (A = Rb, Cs) are discussed comparing magnetization and electron paramagnetic resonance at different microwave frequencies. We show that the low temperature ground state is not a conventional antiferromagnetic order. We rather observe two kinds of spins which experience different local fields.

© EDP Sciences 2000