Manipulating surface magnetic order in iron telluride

Christopher William James Trainer; Chi Ming Yim; Christoph Heil; Feliciano Giustino; Dorina Croitori; Vladimir Tsurkan; Alois Loidl; Efrain Rodriguez; Chris Stock; Peter Wahl

doi:10.1126/sciadv.aav3478

Manipulating surface magnetic order in iron telluride

Christopher William James Trainer, Chi Ming Yim, Christoph Heil, Feliciano Giustino, Dorina Croitori, Vladimir Tsurkan, Alois Loidl, Efrain Rodriguez, Chris Stock, Peter Wahl^*

^*Corresponding author for this work

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Abstract

Control and manipulation of emergent magnetic orders in strongly correlated electron materials promises new opportunities for device concepts which exploit these for spintronics applications. For their technological exploitation it is important to understand the role of surfaces and interfaces to other materials, and their impact on the emergent magnetic orders. Here, we demonstrate for iron telluride, the non-superconducting parent compound of the iron chalcogenide superconductors, determination and manipulation of the surface magnetic structure by low temperature spin-polarized scanning tunneling microscopy. Iron telluride exhibits a complex structural and magnetic phase diagram as a function of interstitial iron concentration. Several theories have been put forward to explain the different magnetic orders observed in the phase diagram, which ascribe a dominant role either to interactions mediated by itinerant electrons or to local moment interactions. Through the controlled removal of surface excess iron, we can separate the inﬂuence of the excess iron from that of the change in the lattice structure.

Original language	English
Article number	eaav3478
Number of pages	8
Journal	Science Advances
Volume	5
Issue number	3
DOIs	https://doi.org/10.1126/sciadv.aav3478
Publication status	Published - 1 Mar 2019

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10.1126/sciadv.aav3478Licence: CC BY

eaav3478.full
Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).
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Controlling Emergent Orders in Quantum: Controlling Emergent Orders in Quantum Materials
Wahl, P. (PI), Hooley, C. (CoI) & Lee, S. (CoI)
EPSRC
1/06/18 → 30/06/23
Project: Standard
Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems
Wahl, P. (PI), Baumberger, F. (CoI), Davis, J. C. (CoI), Green, A. (CoI), Hooley, C. (CoI), Keeling, J. M. J. (CoI) & Mackenzie, A. (CoI)
EPSRC
1/09/11 → 31/08/17
Project: Standard

Manipulating surface magnetic order in iron telluride (dataset)
Trainer, C. W. J. (Creator), Yim, C. M. (Creator), Heil, C. (Creator), Giustino, F. (Creator), Croitori, D. (Creator), Tsurkan, V. (Creator), Loidl, A. (Creator), Rodriguez, E. (Creator), Stock, C. (Creator) & Wahl, P. (Creator), University of St Andrews, 5 Mar 2019
DOI: 10.17630/32f9dd7f-6749-4588-93a7-2b82218a5fdd
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abstract = "Control and manipulation of emergent magnetic orders in strongly correlated electron materials promises new opportunities for device concepts which exploit these for spintronics applications. For their technological exploitation it is important to understand the role of surfaces and interfaces to other materials, and their impact on the emergent magnetic orders. Here, we demonstrate for iron telluride, the non-superconducting parent compound of the iron chalcogenide superconductors, determination and manipulation of the surface magnetic structure by low temperature spin-polarized scanning tunneling microscopy. Iron telluride exhibits a complex structural and magnetic phase diagram as a function of interstitial iron concentration. Several theories have been put forward to explain the different magnetic orders observed in the phase diagram, which ascribe a dominant role either to interactions mediated by itinerant electrons or to local moment interactions. Through the controlled removal of surface excess iron, we can separate the inﬂuence of the excess iron from that of the change in the lattice structure.",

author = "Trainer, {Christopher William James} and Yim, {Chi Ming} and Christoph Heil and Feliciano Giustino and Dorina Croitori and Vladimir Tsurkan and Alois Loidl and Efrain Rodriguez and Chris Stock and Peter Wahl",

note = "C.T., C.M.Y. and P.W. acknowledge funding from EPSRC through EP/L505079/1, EP/I031014/1 and EP/R031924/1, and C.S. through EP/M01052X/1. V.T., A.L. and J.D. acknowledge funding from the Deutsche Forschungsgemeinschaft (DFG) via the Transregional Collaborative Research Center TRR 80 (Augsburg, Munich, Stuttgart). C.H. acknowledges support from the Austrian Science Fund (FWF) project No. J3806-N36 and the Vienna Science Cluster. F.G. acknowledges support from the Leverhulme Trust (Grant RL-2012-001) and the UK EPSRC Research Council (EP/M020517/1).",

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doi = "10.1126/sciadv.aav3478",

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AU - Heil, Christoph

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AU - Tsurkan, Vladimir

AU - Loidl, Alois

AU - Rodriguez, Efrain

AU - Stock, Chris

AU - Wahl, Peter

N1 - C.T., C.M.Y. and P.W. acknowledge funding from EPSRC through EP/L505079/1, EP/I031014/1 and EP/R031924/1, and C.S. through EP/M01052X/1. V.T., A.L. and J.D. acknowledge funding from the Deutsche Forschungsgemeinschaft (DFG) via the Transregional Collaborative Research Center TRR 80 (Augsburg, Munich, Stuttgart). C.H. acknowledges support from the Austrian Science Fund (FWF) project No. J3806-N36 and the Vienna Science Cluster. F.G. acknowledges support from the Leverhulme Trust (Grant RL-2012-001) and the UK EPSRC Research Council (EP/M020517/1).

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N2 - Control and manipulation of emergent magnetic orders in strongly correlated electron materials promises new opportunities for device concepts which exploit these for spintronics applications. For their technological exploitation it is important to understand the role of surfaces and interfaces to other materials, and their impact on the emergent magnetic orders. Here, we demonstrate for iron telluride, the non-superconducting parent compound of the iron chalcogenide superconductors, determination and manipulation of the surface magnetic structure by low temperature spin-polarized scanning tunneling microscopy. Iron telluride exhibits a complex structural and magnetic phase diagram as a function of interstitial iron concentration. Several theories have been put forward to explain the different magnetic orders observed in the phase diagram, which ascribe a dominant role either to interactions mediated by itinerant electrons or to local moment interactions. Through the controlled removal of surface excess iron, we can separate the inﬂuence of the excess iron from that of the change in the lattice structure.

AB - Control and manipulation of emergent magnetic orders in strongly correlated electron materials promises new opportunities for device concepts which exploit these for spintronics applications. For their technological exploitation it is important to understand the role of surfaces and interfaces to other materials, and their impact on the emergent magnetic orders. Here, we demonstrate for iron telluride, the non-superconducting parent compound of the iron chalcogenide superconductors, determination and manipulation of the surface magnetic structure by low temperature spin-polarized scanning tunneling microscopy. Iron telluride exhibits a complex structural and magnetic phase diagram as a function of interstitial iron concentration. Several theories have been put forward to explain the different magnetic orders observed in the phase diagram, which ascribe a dominant role either to interactions mediated by itinerant electrons or to local moment interactions. Through the controlled removal of surface excess iron, we can separate the inﬂuence of the excess iron from that of the change in the lattice structure.

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Manipulating surface magnetic order in iron telluride

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Controlling Emergent Orders in Quantum: Controlling Emergent Orders in Quantum Materials

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

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Manipulating surface magnetic order in iron telluride (dataset)

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