@article{f8659735d04248638da4c75d786685f3,
title = "Band Engineering of Dirac Semimetals Using Charge Density Waves",
abstract = "New developments in the field of topological matter are often driven by materials discovery, including novel topological insulators, Dirac semimetals, and Weyl semimetals. In the last few years, large efforts have been made to classify all known inorganic materials with respect to their topology. Unfortunately, a large number of topological materials suffer from non-ideal band structures. For example, topological bands are frequently convoluted with trivial ones, and band structure features of interest can appear far below the Fermi level. This leaves just a handful of materials that are intensively studied. Finding strategies to design new topological materials is a solution. Here, a new mechanism is introduced, which is based on charge density waves and non-symmorphic symmetry, to design an idealized Dirac semimetal. It is then shown experimentally that the antiferromagnetic compound GdSb0.46Te1.48 is a nearly ideal Dirac semimetal based on the proposed mechanism, meaning that most interfering bands at the Fermi level are suppressed. Its highly unusual transport behavior points to a thus far unknown regime, in which Dirac carriers with Fermi energy very close to the node seem to gradually localize in the presence of lattice and magnetic disorder.",
keywords = "Dirac semimetals, charge density waves, nonsymmorphic symmetry",
author = "Shiming Lei and Teicher, {Samuel M.L.} and Andreas Topp and Kehan Cai and Jingjing Lin and Guangming Cheng and Salters, {Tyger H.} and Fanny Rodolakis and McChesney, {Jessica L.} and Saul Lapidus and Nan Yao and Maxim Krivenkov and Dmitry Marchenko and Andrei Varykhalov and Ast, {Christian R.} and Roberto Car and Jennifer Cano and Vergniory, {Maia G.} and Ong, {N. Phuan} and Schoop, {Leslie M.}",
note = "Funding Information: This research was supported by the Arnold and Mabel Beckman Foundation through a Beckman Young Investigator grant awarded to L.M.S. The authors acknowledge the use of Princeton's Imaging and Analysis Center (IAC), which is partially supported by the Princeton Center for Complex Materials (PCCM), a National Science Foundation (NSF) Materials Research Science and Engineering Center (MRSEC; DMR-2011750). This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The work at UC Santa Barbara was supported by the National Science Foundation though the Q-AMASE-i Quantum Foundry, (DMR-1906325). The authors acknowledge use of the shared computing facilities of the Center for Scientific Computing at UC Santa Barbara, supported by NSF CNS-1725797, and the NSF MRSEC at UC Santa Barbara, NSF DMR-1720256. S.M.L.T. has been supported by the National Science Foundation Graduate Research Fellowship Program under Grant no. DGE-1650114. A.T. was supported by the DFG, proposal No. SCHO 1730/1-1. We thank HZB for the allocation of synchrotron radiation beamtime. M.K., D.M., and A.V. acknowledge support by the Impuls- und Vernetzungsfonds der Helmholtz-Gemeinschaft under grants No. HRJRG-408 and HRSF-0067 (Helmholtz-Russia Joint Research Groups). J.C. acknowledges the support from the National Science Foundation under Grant No. DMR-1942447 and the support of The Flatiron Institute, a division of the Simons Foundation. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. Funding Information: This research was supported by the Arnold and Mabel Beckman Foundation through a Beckman Young Investigator grant awarded to L.M.S. The authors acknowledge the use of Princeton's Imaging and Analysis Center (IAC), which is partially supported by the Princeton Center for Complex Materials (PCCM), a National Science Foundation (NSF) Materials Research Science and Engineering Center (MRSEC; DMR‐2011750). This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE‐AC02‐06CH11357. The work at UC Santa Barbara was supported by the National Science Foundation though the Q‐AMASE‐i Quantum Foundry, (DMR‐1906325). The authors acknowledge use of the shared computing facilities of the Center for Scientific Computing at UC Santa Barbara, supported by NSF CNS‐1725797, and the NSF MRSEC at UC Santa Barbara, NSF DMR‐1720256. S.M.L.T. has been supported by the National Science Foundation Graduate Research Fellowship Program under Grant no. DGE‐1650114. A.T. was supported by the DFG, proposal No. SCHO 1730/1‐1. We thank HZB for the allocation of synchrotron radiation beamtime. M.K., D.M., and A.V. acknowledge support by the Impuls‐ und Vernetzungsfonds der Helmholtz‐Gemeinschaft under grants No. HRJRG‐408 and HRSF‐0067 (Helmholtz‐Russia Joint Research Groups). J.C. acknowledges the support from the National Science Foundation under Grant No. DMR‐1942447 and the support of The Flatiron Institute, a division of the Simons Foundation. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",
year = "2021",
month = jul,
day = "28",
doi = "10.1002/adma.202101591",
language = "English (US)",
volume = "33",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-VCH Verlag",
number = "30",
}