Discovery of a magnetic conductive interface in PbZr0.2Ti0.8O3 /SrTiO3 heterostructures

Yi Zhang, Lin Xie, Jeongwoo Kim, Alex Stern, Hui Wang, Kui Zhang, Xingxu Yan, Linze Li, Henry Liu, Gejian Zhao, Hang Chi, Chaitanya Gadre, Qiyin Lin, Yichun Zhou, Ctirad Uher, Tingyong Chen, Ying Hao Chu, Jing Xia, Ruqian Wu, Xiaoqing Pan

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Emergent physical properties often arise at interfaces of complex oxide heterostructures due to the interplay between various degrees of freedom, especially those with polar discontinuities. It is desirable to explore if these structures may generate pure and controllable spin currents, which are needed to attain unmatched performance and energy efficiency in the next-generation spintronic devices. Here we report the emergence of a spin-polarized two-dimensional electron gas (SP-2DEG) at the interface of two insulators, SrTiO3 and PbZr0.2Ti0.8O3. This SP-2DEG is strongly localized at the interfacial Ti atoms, due to the interplay between Coulomb interaction and band bending, and can be tuned by the ferroelectric polarization. Our findings open a door for engineering ferroelectric/insulator interfaces to create tunable ferroic orders for magnetoelectric device applications and provide opportunities for designing multiferroic materials in heterostructures.

Original languageEnglish (US)
Article number685
JournalNature Communications
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2018

Fingerprint

Two dimensional electron gas
Heterojunctions
Equipment and Supplies
Ferroelectric materials
insulators
Oxides
Magnetoelectronics
Gases
Electrons
Coulomb interactions
Energy efficiency
electron gas
discontinuity
Physical properties
degrees of freedom
physical properties
engineering
Polarization
Atoms
oxides

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Discovery of a magnetic conductive interface in PbZr0.2Ti0.8O3 /SrTiO3 heterostructures. / Zhang, Yi; Xie, Lin; Kim, Jeongwoo; Stern, Alex; Wang, Hui; Zhang, Kui; Yan, Xingxu; Li, Linze; Liu, Henry; Zhao, Gejian; Chi, Hang; Gadre, Chaitanya; Lin, Qiyin; Zhou, Yichun; Uher, Ctirad; Chen, Tingyong; Chu, Ying Hao; Xia, Jing; Wu, Ruqian; Pan, Xiaoqing.

In: Nature Communications, Vol. 9, No. 1, 685, 01.12.2018.

Research output: Contribution to journalArticle

Zhang, Y, Xie, L, Kim, J, Stern, A, Wang, H, Zhang, K, Yan, X, Li, L, Liu, H, Zhao, G, Chi, H, Gadre, C, Lin, Q, Zhou, Y, Uher, C, Chen, T, Chu, YH, Xia, J, Wu, R & Pan, X 2018, 'Discovery of a magnetic conductive interface in PbZr0.2Ti0.8O3 /SrTiO3 heterostructures', Nature Communications, vol. 9, no. 1, 685. https://doi.org/10.1038/s41467-018-02914-9
Zhang, Yi ; Xie, Lin ; Kim, Jeongwoo ; Stern, Alex ; Wang, Hui ; Zhang, Kui ; Yan, Xingxu ; Li, Linze ; Liu, Henry ; Zhao, Gejian ; Chi, Hang ; Gadre, Chaitanya ; Lin, Qiyin ; Zhou, Yichun ; Uher, Ctirad ; Chen, Tingyong ; Chu, Ying Hao ; Xia, Jing ; Wu, Ruqian ; Pan, Xiaoqing. / Discovery of a magnetic conductive interface in PbZr0.2Ti0.8O3 /SrTiO3 heterostructures. In: Nature Communications. 2018 ; Vol. 9, No. 1.
@article{56d6d173a0494b7ebd997d5cfd58bde4,
title = "Discovery of a magnetic conductive interface in PbZr0.2Ti0.8O3 /SrTiO3 heterostructures",
abstract = "Emergent physical properties often arise at interfaces of complex oxide heterostructures due to the interplay between various degrees of freedom, especially those with polar discontinuities. It is desirable to explore if these structures may generate pure and controllable spin currents, which are needed to attain unmatched performance and energy efficiency in the next-generation spintronic devices. Here we report the emergence of a spin-polarized two-dimensional electron gas (SP-2DEG) at the interface of two insulators, SrTiO3 and PbZr0.2Ti0.8O3. This SP-2DEG is strongly localized at the interfacial Ti atoms, due to the interplay between Coulomb interaction and band bending, and can be tuned by the ferroelectric polarization. Our findings open a door for engineering ferroelectric/insulator interfaces to create tunable ferroic orders for magnetoelectric device applications and provide opportunities for designing multiferroic materials in heterostructures.",
author = "Yi Zhang and Lin Xie and Jeongwoo Kim and Alex Stern and Hui Wang and Kui Zhang and Xingxu Yan and Linze Li and Henry Liu and Gejian Zhao and Hang Chi and Chaitanya Gadre and Qiyin Lin and Yichun Zhou and Ctirad Uher and Tingyong Chen and Chu, {Ying Hao} and Jing Xia and Ruqian Wu and Xiaoqing Pan",
year = "2018",
month = "12",
day = "1",
doi = "10.1038/s41467-018-02914-9",
language = "English (US)",
volume = "9",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

TY - JOUR

T1 - Discovery of a magnetic conductive interface in PbZr0.2Ti0.8O3 /SrTiO3 heterostructures

AU - Zhang, Yi

AU - Xie, Lin

AU - Kim, Jeongwoo

AU - Stern, Alex

AU - Wang, Hui

AU - Zhang, Kui

AU - Yan, Xingxu

AU - Li, Linze

AU - Liu, Henry

AU - Zhao, Gejian

AU - Chi, Hang

AU - Gadre, Chaitanya

AU - Lin, Qiyin

AU - Zhou, Yichun

AU - Uher, Ctirad

AU - Chen, Tingyong

AU - Chu, Ying Hao

AU - Xia, Jing

AU - Wu, Ruqian

AU - Pan, Xiaoqing

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Emergent physical properties often arise at interfaces of complex oxide heterostructures due to the interplay between various degrees of freedom, especially those with polar discontinuities. It is desirable to explore if these structures may generate pure and controllable spin currents, which are needed to attain unmatched performance and energy efficiency in the next-generation spintronic devices. Here we report the emergence of a spin-polarized two-dimensional electron gas (SP-2DEG) at the interface of two insulators, SrTiO3 and PbZr0.2Ti0.8O3. This SP-2DEG is strongly localized at the interfacial Ti atoms, due to the interplay between Coulomb interaction and band bending, and can be tuned by the ferroelectric polarization. Our findings open a door for engineering ferroelectric/insulator interfaces to create tunable ferroic orders for magnetoelectric device applications and provide opportunities for designing multiferroic materials in heterostructures.

AB - Emergent physical properties often arise at interfaces of complex oxide heterostructures due to the interplay between various degrees of freedom, especially those with polar discontinuities. It is desirable to explore if these structures may generate pure and controllable spin currents, which are needed to attain unmatched performance and energy efficiency in the next-generation spintronic devices. Here we report the emergence of a spin-polarized two-dimensional electron gas (SP-2DEG) at the interface of two insulators, SrTiO3 and PbZr0.2Ti0.8O3. This SP-2DEG is strongly localized at the interfacial Ti atoms, due to the interplay between Coulomb interaction and band bending, and can be tuned by the ferroelectric polarization. Our findings open a door for engineering ferroelectric/insulator interfaces to create tunable ferroic orders for magnetoelectric device applications and provide opportunities for designing multiferroic materials in heterostructures.

UR - http://www.scopus.com/inward/record.url?scp=85042298517&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042298517&partnerID=8YFLogxK

U2 - 10.1038/s41467-018-02914-9

DO - 10.1038/s41467-018-02914-9

M3 - Article

C2 - 29449561

AN - SCOPUS:85042298517

VL - 9

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 685

ER -