Journal
PHYSICAL REVIEW B
Volume 85, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.155114
Keywords
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Funding
- National Research Foundation (NRF) Singapore [NRF2008NRF-CRP002-024]
- National University of Singapore (NUS)
- FRC (ARF) [R-144-000-278-112]
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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. B 58, 2788 (1998)].
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