@article{cfe2cb3d7d8c46c49811393910b1094a,
title = "Thin film TaAs: developing a platform for Weyl semimetal devices",
abstract = "MX monopnictide compounds (M = Nb,Ta, X = As,P) are prototypical 3D Weyl semimetals (WSMs) that have been shown in bulk single crystal form to have potential for a wide variety of novel devices due to topologically protected band structures and high mobilities. However, very little is known about thin-film synthesis, which is essential to enable device applications. We synthesize TaAs(001) epilayers by molecular beam epitaxy on GaAs(001) and provide an experimental phase diagram illustrating conditions for single-phase, single-crystal-like growth. We investigate the relationship between nanoscale defects and electronic structure using angle-resolved photoemission spectroscopy, kelvin probe force microscopy, and transmission electron microscopy. Our results provide a roadmap and platform for developing 3D WSMs for device applications.",
author = "Nelson, {J N} and Rice, {A D} and R Kurleto and A Shackelford and Z Sierzega and P Hao and B Berggren and C-S Jiang and Norman, {A G} and Holtz, {M E} and Mangum, {J S} and Leahy, {I A} and Heinselman, {K N} and Herve Ness and {Van Schilfgaarde}, Mark and Dessau, {D S} and K Alberi",
note = "Funding Information: We are grateful to Jonathan Denlinger from the Advanced Light Source, and to Fatima Alarab, Vladimir Strocov, and Procopious Constantinou from the Swiss Light Source for assistance during ARPES experiments. This research used resources of the Advanced Light Source, which is a US DOE Office of Science User Facility under contract no. DE-AC02-05CH11231 . We acknowledge the Paul Scherrer Institut, Villigen, Switzerland for provision of synchrotron radiation beamtime at beamline ADRESS of the SLS. Funding Information: This work was authored in part by the National Renewable Energy Laboratory , operated by the Alliance for Sustainable Energy, LLC, for the US Department of Energy (DOE) under contract no. DE-AC36-08GO28308 . Funding Information: This work was authored in part by the National Renewable Energy Laboratory, operated by the Alliance for Sustainable Energy, LLC, for the US Department of Energy (DOE) under contract no. DE-AC36-08GO28308. Funding to perform TaAs epitaxy and basic structural and electrical characterizations (MR, SEM, and XRD) was provided by an NREL Director's Fellowship. Funding for the investigation of the electronic structure and disorder induced by doping and defects (TEM, RBS, scanning probe measurements, ARPES, LEED, QSGW and DFT) were supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Division of Materials Sciences and Engineering, Physical Behavior of Materials Program as part of the “Disorder in Topological Semimetals” project. We thank Dr. Bill McMahon for helpful discussions about film synthesis. We are grateful to Jonathan Denlinger from the Advanced Light Source, and to Fatima Alarab, Vladimir Strocov, and Procopious Constantinou from the Swiss Light Source for assistance during ARPES experiments. This research used resources of the Advanced Light Source, which is a US DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. We acknowledge the Paul Scherrer Institut, Villigen, Switzerland for provision of synchrotron radiation beamtime at beamline ADRESS of the SLS. The views expressed in the article do not necessarily represent the views of the DOE or the US government. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for US government purposes. Conceptualization, J.N.N. and K.A.; software, H.N. and M.V.S.; validation, J.N.N.; formal analysis, J.N.N. H.N. and M.V.S.; investigation, J.N.N. A.D.R. R.K. A.S. Z.S. P.H. B.S.B. C.-S.J. A.G.N. M.E.H. J.S.M. I.A.L. and K.N.H.; resources, J.N.N. M.V.S. D.S.D. and K.A.; writing – original draft, J.N.N.; writing – review & editing, J.N.N. and K.A.; visualization, J.N.N.; supervision, M.V.S. D.S.D. and K.A.; project administration, J.N.N.; funding acquisition, J.N.N. and K.A. The authors declare no competing interests. Funding Information: Funding to perform TaAs epitaxy and basic structural and electrical characterizations (MR, SEM, and XRD) was provided by an NREL Director{\textquoteright}s Fellowship. Funding for the investigation of the electronic structure and disorder induced by doping and defects (TEM, RBS, scanning probe measurements, ARPES, LEED, QSGW and DFT) were supported by the US Department of Energy , Office of Science , Basic Energy Sciences , Division of Materials Sciences and Engineering , Physical Behavior of Materials Program as part of the {"}Disorder in Topological Semimetals{"} project. We thank Dr. Bill McMahon for helpful discussions about film synthesis. Publisher Copyright: {\textcopyright} 2023 Elsevier Inc.",
year = "2023",
month = sep,
day = "6",
doi = "https://doi.org/10.1016/j.matt.2023.06.018",
language = "English",
volume = "6",
pages = "2886--2899",
journal = "Matter",
issn = "2590-2393",
publisher = "Cell Press",
number = "9",
}