We report on the magnetotransport properties of a spin-polarized two-dimensional electron system (2DES) formed in LaAlO3(LAO)/EuTiO3/SrTiO3 (STO) heterostructures. We show that, at low temperature, the 2DES magnetoconductance exhibits weak antilocalization corrections related to Rashba spin-orbit scattering, in analogy with the LAO/STO 2DES. However, the characteristic spin-orbit scattering field decreases substantially for carrier density higher than 1.9×1013cm-2. We attribute this behavior to the masking effect of ferromagnetism, which sets in at the same carrier density and at a temperature below 10 K. Our work shows that, while weak antilocalization corrections to the magnetoconductance are strongly reduced by the emergence of ferromagnetism, they persist in a large part of the phase diagram of a spin-polarized oxide 2DES.
Interplay between spin-orbit coupling and ferromagnetism in magnetotransport properties of a spin-polarized oxide two-dimensional electron system / Stornaiuolo, D.; Jouault, B.; Di Gennaro, E.; Sambri, A.; D'Antuono, M.; Massarotti, D.; Granozio, F. Miletto; Di Capua, R.; De Luca, G. M.; Pepe, G. P.; Tafuri, F.; Salluzzo, M.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 98:7(2018), pp. 075409-1-075409-6. [10.1103/PhysRevB.98.075409]
Interplay between spin-orbit coupling and ferromagnetism in magnetotransport properties of a spin-polarized oxide two-dimensional electron system
Stornaiuolo, D.
;Di Gennaro, E.;Sambri, A.;D'Antuono, M.;Massarotti, D.;Di Capua, R.;De Luca, G. M.;Pepe, G. P.;Tafuri, F.;
2018
Abstract
We report on the magnetotransport properties of a spin-polarized two-dimensional electron system (2DES) formed in LaAlO3(LAO)/EuTiO3/SrTiO3 (STO) heterostructures. We show that, at low temperature, the 2DES magnetoconductance exhibits weak antilocalization corrections related to Rashba spin-orbit scattering, in analogy with the LAO/STO 2DES. However, the characteristic spin-orbit scattering field decreases substantially for carrier density higher than 1.9×1013cm-2. We attribute this behavior to the masking effect of ferromagnetism, which sets in at the same carrier density and at a temperature below 10 K. Our work shows that, while weak antilocalization corrections to the magnetoconductance are strongly reduced by the emergence of ferromagnetism, they persist in a large part of the phase diagram of a spin-polarized oxide 2DES.File | Dimensione | Formato | |
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