Physics – Condensed Matter – Materials Science
Scientific paper
2012-04-09
Physical Reivew B 85, 155114 (2012)
Physics
Condensed Matter
Materials Science
5 pages, 4 figures
Scientific paper
10.1103/PhysRevB.85.155114
We report novel 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 evidences for the unusual quantum linear MR proposed by Abrikosov [A. A. Abrikosov, Phys. Rev. B 58, 2788 (1998)].
Annadi A.
Ariando
Huang Zhongbing
Liu Zhi-Qiang
Lu Wen-Ming
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