ISIS Neutron and Muon Source Data Journal

[NCNR/NIST] Mn-uniformity in Intrinsically Magnetic Topological Insulator Superlattices

Abstract: In order to realize quantum-mechanical electrical properties at high-temperature in industrially scalable systems, it is highly desirable that we should identify materials which posses the targeted behaviors intrinsically. MnBi2Te4 (MBT) is the lone example of an instrinsically antiferromagnetically ordered topological insulator which can realize the quantum anomalous hall effect without doping or other chemical/structural modification. However, the experimentally reported behavior in MBT single crystals and thin films varies widely, and is thought to relate to Mn-deficiency. Here, we systematically examine the role of Mn content and mobility through the growth of MBT/MnTe superlattices of varying MnTe thickness. We propose to use neutron reflectometry to probe interface roughness and Mn-migration in these superlattices.

Principal Investigator: Dr Alexander Grutter
Experimenter: Dr Purnima Parvathy Balakrishnan
Experimenter: Dr Qi Yao
Experimenter: Professor Sean Langridge
Experimenter: Mr Peng Chen
Experimenter: Dr Patrick Quarterman
Experimenter: Dr Andrew Caruana
Local Contact: Dr Christy Kinane
Experimenter: Professor Xufeng KOU

DOI: 10.5286/ISIS.E.RB2000244

ISIS Experiment Number: RB2000244

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Alexander Grutter et al; (2021): [NCNR/NIST] Mn-uniformity in Intrinsically Magnetic Topological Insulator Superlattices, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2000244

Data is released under the CC-BY-4.0 license.