Controlling interfacial states in amorphous/crystalline LaAlO3/SrTiO3 heterostructures by electric fields

Dennis Christensen, Felix Trier, Yunzhong Chen, Anders Smith, J. Nygård, Nini Pryds

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The tunable metal-insulator transition in crystalline LaAlO3/SrTiO3 heterostructures constitutes a central element in the range of remarkable interface properties that has made this oxide system subject to extensive research. Recently, metallic interfaces have also been realized when depositing amorphous LaAlO3 films on SrTiO3. Here, we present a non-volatile and reversible tuning of the interface conductivity by more than 3 orders of magnitude at room temperature by applying an electric field to such amorphous/crystalline heterostructures with amorphous LaAlO3 film thicknesses of 2 nm. We show that the tunability is strongly temperature dependent, and demonstrate a simple protocol for enhancing the tunability. © 2013 American Institute of Physics.
Original languageEnglish
JournalApplied Physics Letters
Volume102
Pages (from-to)021602
Number of pages4
ISSN0003-6951
DOIs
Publication statusPublished - 2013

Cite this

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title = "Controlling interfacial states in amorphous/crystalline LaAlO3/SrTiO3 heterostructures by electric fields",
abstract = "The tunable metal-insulator transition in crystalline LaAlO3/SrTiO3 heterostructures constitutes a central element in the range of remarkable interface properties that has made this oxide system subject to extensive research. Recently, metallic interfaces have also been realized when depositing amorphous LaAlO3 films on SrTiO3. Here, we present a non-volatile and reversible tuning of the interface conductivity by more than 3 orders of magnitude at room temperature by applying an electric field to such amorphous/crystalline heterostructures with amorphous LaAlO3 film thicknesses of 2 nm. We show that the tunability is strongly temperature dependent, and demonstrate a simple protocol for enhancing the tunability. {\circledC} 2013 American Institute of Physics.",
author = "Dennis Christensen and Felix Trier and Yunzhong Chen and Anders Smith and J. Nyg{\aa}rd and Nini Pryds",
year = "2013",
doi = "10.1063/1.4775669",
language = "English",
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journal = "Applied Physics Letters",
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Controlling interfacial states in amorphous/crystalline LaAlO3/SrTiO3 heterostructures by electric fields. / Christensen, Dennis ; Trier, Felix; Chen, Yunzhong; Smith, Anders; Nygård, J.; Pryds, Nini.

In: Applied Physics Letters, Vol. 102, 2013, p. 021602.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Controlling interfacial states in amorphous/crystalline LaAlO3/SrTiO3 heterostructures by electric fields

AU - Christensen, Dennis

AU - Trier, Felix

AU - Chen, Yunzhong

AU - Smith, Anders

AU - Nygård, J.

AU - Pryds, Nini

PY - 2013

Y1 - 2013

N2 - The tunable metal-insulator transition in crystalline LaAlO3/SrTiO3 heterostructures constitutes a central element in the range of remarkable interface properties that has made this oxide system subject to extensive research. Recently, metallic interfaces have also been realized when depositing amorphous LaAlO3 films on SrTiO3. Here, we present a non-volatile and reversible tuning of the interface conductivity by more than 3 orders of magnitude at room temperature by applying an electric field to such amorphous/crystalline heterostructures with amorphous LaAlO3 film thicknesses of 2 nm. We show that the tunability is strongly temperature dependent, and demonstrate a simple protocol for enhancing the tunability. © 2013 American Institute of Physics.

AB - The tunable metal-insulator transition in crystalline LaAlO3/SrTiO3 heterostructures constitutes a central element in the range of remarkable interface properties that has made this oxide system subject to extensive research. Recently, metallic interfaces have also been realized when depositing amorphous LaAlO3 films on SrTiO3. Here, we present a non-volatile and reversible tuning of the interface conductivity by more than 3 orders of magnitude at room temperature by applying an electric field to such amorphous/crystalline heterostructures with amorphous LaAlO3 film thicknesses of 2 nm. We show that the tunability is strongly temperature dependent, and demonstrate a simple protocol for enhancing the tunability. © 2013 American Institute of Physics.

U2 - 10.1063/1.4775669

DO - 10.1063/1.4775669

M3 - Journal article

VL - 102

SP - 021602

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

ER -