Hidden antiferromagnetism on the light-irradiated surface of bulk SrTiO3 and at the LaAlO3_SrTiO3 interfaces

2015/01/28 by L. P. Gor’kov, Lev P. Gor'kov, Gor'kov, Lev P.
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Electronic and Structural Properties of Oxides #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1501.07231

8 pages, 1 figure

openalex publication_date 2015/01/28 · arxiv created 2015/01/29 · arxiv updated 2015/01/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study properties of electrons on illuminated surfaces of SrTiO3 with titanium dxz_dyz and dxy bands for their spectrum. Recently A. F. Santander-Syro et al [Nature Materials, 13, 1085 (2014)] found that the dxy bands actually comprise two chiral branches with the Kramers degeneracy at the zone center lifted in absence of a magnetic moment. From symmetry analysis of instabilities possible in the Fermi liquid with exchange interactions we identified the metallic in-layer state with the concrete antiferromagnetic phase and discuss if the same state materializes at conducting LaAlO3_SrTiO3 interfaces.

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