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Title: Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate

Abstract

By using a combination of heteroepitaxial growth, structure refinement based on synchrotron x-ray diffraction, and first-principles calculations, we show that the symmetry-protected Dirac line nodes in the topological semimetallic perovskite SrIrO3 can be lifted simply by applying epitaxial constraints. In particular, the Dirac gap opens without breaking the Pbnm mirror symmetry. In virtue of a symmetry-breaking analysis, we demonstrate that the original symmetry protection is related to the n -glide operation, which can be selectively broken by different heteroepitaxial structures. Here, this symmetry protection renders the nodal line a nonsymmorphic Dirac semimetallic state. The results highlight the vital role of crystal symmetry in spin-orbit-coupled correlated oxides and provide a foundation for experimental realization of topological insulators in iridate-based heterostructures.

Authors:
 [1];  [2];  [2];  [3];  [4];  [5];  [4];  [6];  [2];  [5];  [3];  [7];  [5]
  1. Univ. of Tennessee, Knoxville, TN (United States); Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Charles Univ., Prague (Czech Republic)
  3. Northwestern Univ., Evanston, IL (United States)
  4. Univ. of California, Berkeley, CA (United States)
  5. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Inst. de Ciència de Materials de Barcelona (ICMAB-CSIC), Bellaterra (Spain)
  7. Inst. of Physics ASCR, Prague (Czech Republic)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; US Army Research Office (ARO); Ministry of Economic Affairs and Digital Transformation of Spain (MINECO); Austrian Science Fund (FWF)
OSTI Identifier:
1238283
Alternate Identifier(s):
OSTI ID: 1237794
Grant/Contract Number:  
AC02-05CH11231; AC02-06CH11357; W911NF-15-1-0017; MAT2012-33207; J3523-N27
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 8; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
ENGLISH
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; electronic structure; Dirac semimetal; iridates; thin films; LDA; X-ray diffraction; condensed matter & materials physics

Citation Formats

Liu, Jian, Kriegner, Dominik, Horak, L., Puggioni, D., Serrao, C. Rayan, Chen, R., Yi, D., Frontera, C., Holy, V., Vishwanath, A., Rondinelli, J. M., Marti, X., and Ramesh, R. Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.085118.
Liu, Jian, Kriegner, Dominik, Horak, L., Puggioni, D., Serrao, C. Rayan, Chen, R., Yi, D., Frontera, C., Holy, V., Vishwanath, A., Rondinelli, J. M., Marti, X., & Ramesh, R. Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate. United States. https://doi.org/10.1103/PhysRevB.93.085118
Liu, Jian, Kriegner, Dominik, Horak, L., Puggioni, D., Serrao, C. Rayan, Chen, R., Yi, D., Frontera, C., Holy, V., Vishwanath, A., Rondinelli, J. M., Marti, X., and Ramesh, R. Thu . "Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate". United States. https://doi.org/10.1103/PhysRevB.93.085118. https://www.osti.gov/servlets/purl/1238283.
@article{osti_1238283,
title = {Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate},
author = {Liu, Jian and Kriegner, Dominik and Horak, L. and Puggioni, D. and Serrao, C. Rayan and Chen, R. and Yi, D. and Frontera, C. and Holy, V. and Vishwanath, A. and Rondinelli, J. M. and Marti, X. and Ramesh, R.},
abstractNote = {By using a combination of heteroepitaxial growth, structure refinement based on synchrotron x-ray diffraction, and first-principles calculations, we show that the symmetry-protected Dirac line nodes in the topological semimetallic perovskite SrIrO3 can be lifted simply by applying epitaxial constraints. In particular, the Dirac gap opens without breaking the Pbnm mirror symmetry. In virtue of a symmetry-breaking analysis, we demonstrate that the original symmetry protection is related to the n -glide operation, which can be selectively broken by different heteroepitaxial structures. Here, this symmetry protection renders the nodal line a nonsymmorphic Dirac semimetallic state. The results highlight the vital role of crystal symmetry in spin-orbit-coupled correlated oxides and provide a foundation for experimental realization of topological insulators in iridate-based heterostructures.},
doi = {10.1103/PhysRevB.93.085118},
journal = {Physical Review B},
number = 8,
volume = 93,
place = {United States},
year = {Thu Feb 11 00:00:00 EST 2016},
month = {Thu Feb 11 00:00:00 EST 2016}
}

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Cited by: 69 works
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