Strong evidence for d-electron spin transport at room temperature at a LaAlO3/SrTiO3 interface

Ohshima R, Ando Y, Matsuzaki K, Susaki T, Weiler M, Klingler S, Huebl H, Shikoh E, Shinjo T, Goennenwein STB, Shiraishi M (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Nature Materials

Book Volume: 16

Pages Range: 609-614

Journal Issue: 6

DOI: 10.1038/nmat4857

Abstract

A d-orbital electron has an anisotropic electron orbital and is a source of magnetism. The realization of a two-dimensional electron gas (2DEG) embedded at a LaAlO3/SrTiO3 interface surprised researchers in materials and physical sciences because the 2DEG consists of 3d-electrons of Ti with extraordinarily large carrier mobility, even in the insulating oxide heterostructure. To date, a wide variety of physical phenomena, such as ferromagnetism and the quantum Hall effect, have been discovered in this 2DEG system, demonstrating the ability of d-electron 2DEG systems to provide a material platform for the study of interesting physics. However, because of both ferromagnetism and the Rashba field, long-range spin transport and the exploitation of spintronics functions have been believed difficult to implement in d-electron 2DEG systems. Here, we report the experimental demonstration of roomerature spin transport in a d-electron-based 2DEG at a LaAlO3/SrTiO3 interface, where the spin relaxation length is about 300 nm. Our finding, which counters the conventional understandings of d-electron 2DEGs, highlights the spin-functionality of conductive oxide systems and opens the field of d-electron spintronics.

Involved external institutions

Kyoto University / 京都大学 Kyōto daigaku JP Japan (JP) Tokyo Institute of Technology JP Japan (JP) Bayerische Akademie der Wissenschaften DE Germany (DE) Osaka City University (OCU) / 大阪市立大学 JP Japan (JP)

How to cite

APA:

Ohshima, R., Ando, Y., Matsuzaki, K., Susaki, T., Weiler, M., Klingler, S.,... Shiraishi, M. (2017). Strong evidence for d-electron spin transport at room temperature at a LaAlO3/SrTiO3 interface. Nature Materials, 16(6), 609-614. https://doi.org/10.1038/nmat4857

MLA:

Ohshima, Ryo, et al. "Strong evidence for d-electron spin transport at room temperature at a LaAlO3/SrTiO3 interface." Nature Materials 16.6 (2017): 609-614.

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