Investigation of magnetic order in topological insulators induced by the proximity effect

DOI

The breaking of time-reversal symmetry via ferromagnetic (FM) doping is crucial for enabling many interesting phenomena in topological insulators (TIs) such as the Quantum Anomalous Hall (QAH) effect and the topological magnetoelectric effect. So far, FM-doped bulk samples, such as Mn-Bi2Se3, show only a TC of ~12 K. One possibility to overcome this limitation is to raise the transition temperature via the proximity to a FM overlayer, such as Fe or Co. A recent report has been claiming room-temperature ferromagnetism of the bulk (using XMCD), however, this result has been challenged by other authors. Therefore, it is essential to use a neutron-based bulk method to decide if this enhancement of the bulk transition temperature is reproducible and if so, if it is due to homogenous doping or cluster formation.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24090607
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24090607
Provenance
Creator Professor Sean Langridge; Dr Christy Kinane; Dr Nina-Juliane Steinke; Professor Thorsten Hesjedal; Professor Gerrit van der Laan; Mr Liam Collins-McIntyre; Mr SeWook Oh; Mr Alexander Baker; Professor Shilei Zhang
Publisher ISIS Neutron and Muon Source
Publication Year 2016
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2013-05-24T07:20:07Z
Temporal Coverage End 2013-05-29T08:29:13Z