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000909618 0247_ $$2doi$$a10.1103/PhysRevApplied.18.034012
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000909618 1001_ $$0P:(DE-Juel1)180225$$aHong, Yan$$b0$$eCorresponding author
000909618 245__ $$aModulating Spin Polarization and Spin-Orbit Interaction by Submonolayer Engineering at La Al O 3 / Sr Ti O 3 Interfaces
000909618 260__ $$aCollege Park, Md. [u.a.]$$bAmerican Physical Society$$c2022
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000909618 520__ $$aRecently, the LaAlO3/SrTiO3 (LAO/STO) interface has been highlighted as a major platform for spintronics, and its fundamental control of spin properties, therefore, becomes a key issue for application of this system. Here, we present a study showing the modulation of magnetic two-dimensional electron gases (2DEGs) with simultaneously enhanced spin-orbit interaction at the interface of LAO/STO by inserting LaCoO3 submonolayers. At first, transport experiments provide evidence that Kondo behavior can be well controlled below about 13 K with the interlayer Co ions contributing as scattering centers. In addition, the systematic variation of the anomalous Hall effect obtained with increasing fraction of interfacial Co concentration below 10 K reveals that the spin polarization of 2DEGs is enhanced via submonolayer insertion. Simultaneously, we also observe an enlarged spin-orbit interaction at the buffered LAO/STO interface, resulting in a remarkably strong field-orientation-dependent magnetoresistance. Such tailored LAO/STO interfaces could potentially contribute to stronger spin-to-charge conversion responses and spin-torque measurements. Our observations indicate the subunit-cell insertion of functional layers to be a suitable route to tailor spin, orbital, and lattice interactions of the interfacial 2DEG, which makes the LAO/STO system an intriguing platform for spintronic applications.
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000909618 7001_ $$0P:(DE-Juel1)172846$$aRose, Marc-André$$b1
000909618 7001_ $$00000-0002-0791-9904$$aZhang, Zhaoting$$b2
000909618 7001_ $$0P:(DE-HGF)0$$aLi, Ming$$b3
000909618 7001_ $$0P:(DE-Juel1)187578$$aHeymann, Lisa$$b4$$ufzj
000909618 7001_ $$0P:(DE-Juel1)180455$$aHe, Suqin$$b5
000909618 7001_ $$0P:(DE-Juel1)130677$$aGunkel, Felix$$b6
000909618 773__ $$0PERI:(DE-600)2760310-6$$a10.1103/PhysRevApplied.18.034012$$gVol. 18, no. 3, p. 034012$$n3$$p034012$$tPhysical review applied$$v18$$x2331-7019$$y2022
000909618 8564_ $$uhttps://juser.fz-juelich.de/record/909618/files/Invoice_INV_22_SEP_009396.pdf
000909618 8564_ $$uhttps://juser.fz-juelich.de/record/909618/files/Hong_PhysRevApplied.18.034012.pdf$$yOpenAccess
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