Nemes NM, Calderón MJ, Beltrán JI, Bruno FY, García-Barriocanal J, Sefrioui Z, León C, García-Hernández M, Muñoz MC, Brey L, Santamaría J. Signatures of a two-dimensional ferromagnetic electron gas at the La0.7Sr0.3MnO3/SrTiO3 interface arising from orbital reconstruction.
ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014;
26:7516-7520. [PMID:
25327446 DOI:
10.1002/adma.201402829]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 08/29/2014] [Indexed: 06/04/2023]
Abstract
The magnetoresistance of La0.7Sr0.3MnO3/SrTiO3 superlattices with magnetic field rotating out-of-plane shows unexpected peaks for in-plane fields. Resistivity calculations with spin-orbit coupling reveal that orbital reconstruction at the manganite interface leads to a 2D ferromagnetic electron gas coupled antiparallel to the manganite "bulk". These orbital and magnetic reconstructions are supported by X-ray linear dichroism and ab initio calculations.
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