INSTITUTO DE FISICA DE LIQUIDOS Y SISTEMAS BIOLOGICOS
Unidad Ejecutora - UE
Hall coefficient anomaly in the low-temperature high-field phase of Sr3Ru2O7
BORZI, R. A.; MCCOLLAM, A.; BRUIN, J. A. N.; PERRY, R. S.; MACKENZIE, A. P.; A. GRIGERA, S.
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
American Physical Society
Año: 2011 vol. 84 p. 2051121 - 2051125
We report a study of the Hall effect of high-purity Sr3Ru2O7 single crystals. We establish an empirical correlation between the onset of its unusual low-temperature, high-ﬁeld phase and a pronounced dip in the ﬁeld-dependent Hall coefﬁcient. Unlike the order parameter obtained from measurements of anisotropic resistivity, which is affected by the formation of domains, the Hall effect feature seems to reﬂect the nature of the ordering within a single domain. We checked for violations of the Onsager relations for the off-diagonal components of the resistivity tensor but do not detect any. We compare our observations to those on materials that have long-wavelength spin structures, and discuss them in relation to a growing body of theoretical work on the nature of the low-temperature phase in Sr3Ru2O7.