Existence of two electronic states in Sr4Ru3O10 at low temperatures

Details Existence of two electronic states in Sr4Ru3O10 at low temperatures Existence of two electronic states in Sr4Ru3O10 at low temperatures

2007-02-05

arxiv.org/abs/cond-mat/0702093v1

Physics

Condensed Matter

Strongly Correlated Electrons

20 pages, 6 figures

Scientific paper

We report measurements on in-plane resistivity, thermopower, and magnetization as a function of temperature and magnetic fields on single crystalline Sr4Ru3O10 grown by the floating zone method. As the temperature was lowered to below around 30 K, the in-plane and c-axis resistivities and the thermopower were found to exhibit a step feature accompanied by hysteresis behavior when the in-plane field was swept up and down from below 10 kOe to above 20 kOe. The sharp increase in the thermopower with increasing in-plane magnetic field at low temperatures has not been observed previously in layered transition metal oxides. Comparing with magnetization data, we propose that the step feature marks the transition between the two different electronic states in Sr4Ru3O10. We propose that the alignment of domains by the in-plane magnetic field is responsible to the emergence of the new electronic states in high applied in-plane magnetic field.

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