CdEr2Se4: A New Erbium Spin Ice System in a Spinel Structure (CROSBI ID 166819)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Lago, Jorge ; Živković, Ivica ; Malkin, B.Z. ; Rodriguez Fernandez, J. ; Ghigna, P. ; Dalmas de Reotier, P. ; Yaouanc, A. ; Rojo, T.
engleski
CdEr2Se4: A New Erbium Spin Ice System in a Spinel Structure
Here we present a detailed study of the spinel CdEr2Se4 and show it to be a new instance of spin ice, the first one in an erbium material and the first one in a spinel. Definitive experimental evidence comes from the temperature dependence of the magnetic entropy, which shows an excellent agreement with the predicted behavior for a spin ice state. Crystal field calculations demonstrate that the change in the local environment from that of the titanates completely alters the rare-earth anisotropy giving rise, in the case of Er3+, to the required Ising anisotropy, when Er2Ti2O7 behaves as an XY antiferromagnet. This finding opens up the possibility of new exotic ground states within the CdR2Se4 and CdR2Se4 families.
Spin-ice; Quantum magnets; Spinels
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Podaci o izdanju
104 (24)
2010.
247203-1-247203-4
objavljeno
0031-9007
10.1103/PhysRevLett.104.247203