Uniaxial magnetocrystalline anisotropy in CaRu O3
Abstract
CaRuO3 is a paramagnetic metal and since its low temperature resistivity is described by ρ=ρ0+ATγ with γ∼1.5 , it is also considered a non-Fermi liquid (NFL) metal. We have performed extensive magnetoresistance and Hall effect measurements of untwinned epitaxial films of CaRuO3 . These measurements reveal that CaRuO3 exhibits uniaxial magnetocrystalline anisotropy. In addition, the low-temperature NFL behavior is most effectively suppressed when a magnetic field is applied along the easy axis, suggesting that critical spin fluctuations, possibly due to proximity of a quantum critical phase transition, are related to the NFL behavior.
- Publication:
-
Physical Review B
- Pub Date:
- February 2006
- DOI:
- arXiv:
- arXiv:nlin/0508038
- Bibcode:
- 2006PhRvB..73h5109S
- Keywords:
-
- 71.27.+a;
- 72.15.Gd;
- 73.61.-r;
- 73.50.-h;
- Strongly correlated electron systems;
- heavy fermions;
- Galvanomagnetic and other magnetotransport effects;
- Electrical properties of specific thin films;
- Electronic transport phenomena in thin films;
- Nonlinear Sciences - Pattern Formation and Solitons;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 7 figures