Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3

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	Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3
	Liu, Xiaoran; Chakhalian, J.; Kareev, M.; Middey, S.; Pal, B.; Cao, Yanwei; Wen, Fangdi
刊名	APPLIED PHYSICS LETTERS
	2018
卷号	112 期号:12
关键词	Oxide Interfaces Spintronics
英文摘要	Understanding, creating, and manipulating spin polarization of two-dimensional electron gases at complex oxide interfaces present an experimental challenge. For example, despite almost a decade long research effort, the microscopic origin of ferromagnetism in LaAlO3/SrTiO3 heterojunctions is still an open question. Here, by using a prototypical two-dimensional electron gas (2DEG) which emerges at the interface between band insulator SrTiO3 and antiferromagnetic Mott insulator LaTiO3, the experiment reveals the evidence for magnetic phase separation in a hole-doped Ti d(1) t(2g) system, resulting in spin-polarized 2DEG. The details of electronic and magnetic properties of the 2DEG were investigated by temperature-dependent d.c. transport, angle-dependent X-ray photoemission spectroscopy, and temperature-dependent magnetoresistance. The observation of clear hysteresis in magnetotransport at low magnetic fields implies spin-polarization from magnetic islands in the hole rich LaTiO3 near the interface. These findings emphasize the role of magnetic instabilities in doped Mott insulators, thus providing another path for designing all-oxide structures relevant to spintronic applications. Published by AIP Publishing.
学科主题	Physics
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/16753]
专题	2018专题
推荐引用方式 GB/T 7714	Liu, Xiaoran,Chakhalian, J.,Kareev, M.,et al. Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3[J]. APPLIED PHYSICS LETTERS,2018,112(12).
APA	Liu, Xiaoran.,Chakhalian, J..,Kareev, M..,Middey, S..,Pal, B..,...&Wen, Fangdi.(2018).Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3.APPLIED PHYSICS LETTERS,112(12).
MLA	Liu, Xiaoran,et al."Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3".APPLIED PHYSICS LETTERS 112.12(2018).