NIMTE OpenIR  > 2018专题
Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3
Wen, Fangdi; Cao, Yanwei; Liu, Xiaoran; Pal, B.; Middey, S.; Kareev, M.; Chakhalian, J.
2018
Source PublicationAPPLIED PHYSICS LETTERS
Volume112Issue:12
AbstractUnderstanding, 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.
KeywordOxide Interfaces Spintronics
Subject AreaPhysics
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16753
Collection2018专题
Recommended Citation
GB/T 7714
Wen, Fangdi,Cao, Yanwei,Liu, Xiaoran,et al. Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3[J]. APPLIED PHYSICS LETTERS,2018,112(12).
APA Wen, Fangdi.,Cao, Yanwei.,Liu, Xiaoran.,Pal, B..,Middey, S..,...&Chakhalian, J..(2018).Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3.APPLIED PHYSICS LETTERS,112(12).
MLA Wen, Fangdi,et al."Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3".APPLIED PHYSICS LETTERS 112.12(2018).
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