Magnetic Interactions at the Nanoscale in Trilayer Titanates

Yanwei Cao; Zhenzhong Yang; M. Kareev; Xiaoran Liu; D. Meyers; S. Middey; D. Choudhury; P. Shafer; Jiandong Guo; J. W. Freeland; E. Arenholz; Lin Gu; J. Chakhalian

doi:10.1103/PhysRevLett.116.076802

Magnetic Interactions at the Nanoscale in Trilayer Titanates

Yanwei Cao
, Zhenzhong Yang
, M. Kareev
, Xiaoran Liu
, D. Meyers
, S. Middey
, D. Choudhury
, P. Shafer
, Jiandong Guo
, J. W. Freeland
, E. Arenholz
, Lin Gu
, J. Chakhalian

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

We report on the phase diagram of competing magnetic interactions at the nanoscale in engineered ultrathin trilayer heterostructures of LaTiO3/SrTiO3/YTiO3, in which the interfacial inversion symmetry is explicitly broken. Combined atomic layer resolved scanning transmission electron microscopy with electron energy loss spectroscopy and electrical transport have confirmed the formation of a spatially separated two-dimensional electron liquid and high density two-dimensional localized magnetic moments at the LaTiO3/SrTiO3 and SrTiO3/YTiO3 interfaces, respectively. Resonant soft x-ray linear dichroism spectroscopy has demonstrated the presence of orbital polarization of the conductive LaTiO3/SrTiO3 and localized SrTiO3/YTiO3 electrons. Our results provide a route with prospects for exploring new magnetic interfaces, designing a tunable two-dimensional d-electron Kondo lattice, and potential spin Hall applications.

Original language	English
Article number	076802
Journal	Physical Review Letters
Volume	116
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.116.076802
State	Published - 17 Feb 2016
Externally published	Yes

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10.1103/PhysRevLett.116.076802

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title = "Magnetic Interactions at the Nanoscale in Trilayer Titanates",

abstract = "We report on the phase diagram of competing magnetic interactions at the nanoscale in engineered ultrathin trilayer heterostructures of LaTiO3/SrTiO3/YTiO3, in which the interfacial inversion symmetry is explicitly broken. Combined atomic layer resolved scanning transmission electron microscopy with electron energy loss spectroscopy and electrical transport have confirmed the formation of a spatially separated two-dimensional electron liquid and high density two-dimensional localized magnetic moments at the LaTiO3/SrTiO3 and SrTiO3/YTiO3 interfaces, respectively. Resonant soft x-ray linear dichroism spectroscopy has demonstrated the presence of orbital polarization of the conductive LaTiO3/SrTiO3 and localized SrTiO3/YTiO3 electrons. Our results provide a route with prospects for exploring new magnetic interfaces, designing a tunable two-dimensional d-electron Kondo lattice, and potential spin Hall applications.",

author = "Yanwei Cao and Zhenzhong Yang and M. Kareev and Xiaoran Liu and D. Meyers and S. Middey and D. Choudhury and P. Shafer and Jiandong Guo and Freeland, \{J. W.\} and E. Arenholz and Lin Gu and J. Chakhalian",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = feb,

day = "17",

doi = "10.1103/PhysRevLett.116.076802",

language = "英语",

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journal = "Physical Review Letters",

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TY - JOUR

T1 - Magnetic Interactions at the Nanoscale in Trilayer Titanates

AU - Cao, Yanwei

AU - Yang, Zhenzhong

AU - Kareev, M.

AU - Liu, Xiaoran

AU - Meyers, D.

AU - Middey, S.

AU - Choudhury, D.

AU - Shafer, P.

AU - Guo, Jiandong

AU - Freeland, J. W.

AU - Arenholz, E.

AU - Gu, Lin

AU - Chakhalian, J.

PY - 2016/2/17

Y1 - 2016/2/17

N2 - We report on the phase diagram of competing magnetic interactions at the nanoscale in engineered ultrathin trilayer heterostructures of LaTiO3/SrTiO3/YTiO3, in which the interfacial inversion symmetry is explicitly broken. Combined atomic layer resolved scanning transmission electron microscopy with electron energy loss spectroscopy and electrical transport have confirmed the formation of a spatially separated two-dimensional electron liquid and high density two-dimensional localized magnetic moments at the LaTiO3/SrTiO3 and SrTiO3/YTiO3 interfaces, respectively. Resonant soft x-ray linear dichroism spectroscopy has demonstrated the presence of orbital polarization of the conductive LaTiO3/SrTiO3 and localized SrTiO3/YTiO3 electrons. Our results provide a route with prospects for exploring new magnetic interfaces, designing a tunable two-dimensional d-electron Kondo lattice, and potential spin Hall applications.

AB - We report on the phase diagram of competing magnetic interactions at the nanoscale in engineered ultrathin trilayer heterostructures of LaTiO3/SrTiO3/YTiO3, in which the interfacial inversion symmetry is explicitly broken. Combined atomic layer resolved scanning transmission electron microscopy with electron energy loss spectroscopy and electrical transport have confirmed the formation of a spatially separated two-dimensional electron liquid and high density two-dimensional localized magnetic moments at the LaTiO3/SrTiO3 and SrTiO3/YTiO3 interfaces, respectively. Resonant soft x-ray linear dichroism spectroscopy has demonstrated the presence of orbital polarization of the conductive LaTiO3/SrTiO3 and localized SrTiO3/YTiO3 electrons. Our results provide a route with prospects for exploring new magnetic interfaces, designing a tunable two-dimensional d-electron Kondo lattice, and potential spin Hall applications.

UR - https://www.scopus.com/pages/publications/84959419149

U2 - 10.1103/PhysRevLett.116.076802

DO - 10.1103/PhysRevLett.116.076802

M3 - 文章

AN - SCOPUS:84959419149

SN - 0031-9007

VL - 116

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

M1 - 076802

ER -

Magnetic Interactions at the Nanoscale in Trilayer Titanates

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