Magnetic-field induced resistivity minimum with in-plane linear magnetoresistance of the Fermi liquid in SrTiO3-x single crystals
Abstract
We report magnetotransport properties of the low-temperature Fermi liquid in SrTiO3-x single crystals. The classical limit dominates the magnetotransport properties for a magnetic field perpendicular to the sample surface and consequently a magnetic-field induced resistivity minimum emerges. While for the field applied in plane and normal to the current, the linear magnetoresistance (MR) starting from small fields (< 0.5 T) appears. The large anisotropy in the transverse MRs reveals the strong surface interlayer scattering due to the large gradient of oxygen vacancy concentration from the surface to the interior of SrTiO3-x single crystals. Moreover, the linear MR in our case was likely due to the inhomogeneity of oxygen vacancies and oxygen vacancy clusters, which could provide experimental evidence for the unusual quantum linear MR proposed by Abrikosov [Phys. Rev. BPLRBAQ1098-012110.1103/PhysRevB.58.2788 58, 2788 (1998)].
- Publication:
-
Physical Review B
- Pub Date:
- April 2012
- DOI:
- 10.1103/PhysRevB.85.155114
- arXiv:
- arXiv:1204.1901
- Bibcode:
- 2012PhRvB..85o5114L
- Keywords:
-
- 73.40.Rw;
- 73.50.Gr;
- 73.20.Hb;
- Metal-insulator-metal structures;
- Charge carriers: generation recombination lifetime trapping mean free paths;
- Impurity and defect levels;
- energy states of adsorbed species;
- Condensed Matter - Materials Science;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 5 pages, 4 figures