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Title: Spectral Evidence for Emergent Order in Ba 1 - x Na x Fe 2 As 2

Abstract

In this paper, we report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba 1-xNa xFe 2As 2. This system harbors the recently discovered double-Q magnetic order appearing in a reentrant C 4 phase deep within the underdoped regime of the phase diagram that is otherwise dominated by the coupled nematic phase and collinear antiferromagnetic order. From a detailed temperature-dependence study, we identify the electronic response to the nematic phase in an orbital-dependent band shift that strictly follows the rotational symmetry of the lattice and disappears when the system restores C 4 symmetry in the low temperature phase. Additionally, we report the observation of a distinct electronic reconstruction that cannot be explained by the known electronic orders in the system.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [11];  [11];  [11];  [11];  [3];  [12];  [12];  [11];  [11] more »;  [13];  [4];  [11];  [14] « less
  1. Univ. of California, Berkeley, CA (United States). Department of Physics; Rice Univ., Houston, TX (United States). Department of Physics and Astronomy
  2. Univ. of California, Berkeley, CA (United States). Department of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource
  4. Stanford Univ., CA (United States). Stanford Institute of Materials and Energy Sciences, Departments of Physics and Applied Physics, and Geballe Laboratory for Advanced Materials
  5. Sun Yat-Sen University, Guangzhou (China). School of Physics
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  7. North Carolina State Univ., Raleigh, NC (United States). Department of Physics
  8. Renmin University of China, Beijing (China). Department of Physics
  9. Rice Univ., Houston, TX (United States). Department of Physics and Astronomy
  10. Karlsruhe Institute of Technology (Germany). Institute for Solid State Physics; Universitt Heidelberg (Germany). Kirchhoff-Institute for Physics
  11. Karlsruhe Institute of Technology (Germany). Institute for Solid State Physics
  12. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
  13. Univ. of California, Berkeley, CA (United States). Department of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  14. Univ. of California, Berkeley, CA (United States). Department of Physics and Department of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1479444
Alternate Identifier(s):
OSTI ID: 1471277
Grant/Contract Number:  
AC02-05CH11231; AC03-76SF008; SC0018197; AC02-05-CH11231; 2016YFA0300504
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 12; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE

Citation Formats

Yi, M., Frano, A., Lu, D. H., He, Y., Wang, Meng, Frandsen, B. A., Kemper, A. F., Yu, R., Si, Q., Wang, L., He, M., Hardy, F., Schweiss, P., Adelmann, P., Wolf, T., Hashimoto, M., Mo, S. -K., Hussain, Z., Le Tacon, M., Böhmer, A. E., Lee, D. -H., Shen, Z. -X., Meingast, C., and Birgeneau, R. J. Spectral Evidence for Emergent Order in Ba1-xNaxFe2As2. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.121.127001.
Yi, M., Frano, A., Lu, D. H., He, Y., Wang, Meng, Frandsen, B. A., Kemper, A. F., Yu, R., Si, Q., Wang, L., He, M., Hardy, F., Schweiss, P., Adelmann, P., Wolf, T., Hashimoto, M., Mo, S. -K., Hussain, Z., Le Tacon, M., Böhmer, A. E., Lee, D. -H., Shen, Z. -X., Meingast, C., & Birgeneau, R. J. Spectral Evidence for Emergent Order in Ba1-xNaxFe2As2. United States. doi:10.1103/PhysRevLett.121.127001.
Yi, M., Frano, A., Lu, D. H., He, Y., Wang, Meng, Frandsen, B. A., Kemper, A. F., Yu, R., Si, Q., Wang, L., He, M., Hardy, F., Schweiss, P., Adelmann, P., Wolf, T., Hashimoto, M., Mo, S. -K., Hussain, Z., Le Tacon, M., Böhmer, A. E., Lee, D. -H., Shen, Z. -X., Meingast, C., and Birgeneau, R. J. Tue . "Spectral Evidence for Emergent Order in Ba1-xNaxFe2As2". United States. doi:10.1103/PhysRevLett.121.127001. https://www.osti.gov/servlets/purl/1479444.
@article{osti_1479444,
title = {Spectral Evidence for Emergent Order in Ba1-xNaxFe2As2},
author = {Yi, M. and Frano, A. and Lu, D. H. and He, Y. and Wang, Meng and Frandsen, B. A. and Kemper, A. F. and Yu, R. and Si, Q. and Wang, L. and He, M. and Hardy, F. and Schweiss, P. and Adelmann, P. and Wolf, T. and Hashimoto, M. and Mo, S. -K. and Hussain, Z. and Le Tacon, M. and Böhmer, A. E. and Lee, D. -H. and Shen, Z. -X. and Meingast, C. and Birgeneau, R. J.},
abstractNote = {In this paper, we report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba1-xNaxFe2As2. This system harbors the recently discovered double-Q magnetic order appearing in a reentrant C4 phase deep within the underdoped regime of the phase diagram that is otherwise dominated by the coupled nematic phase and collinear antiferromagnetic order. From a detailed temperature-dependence study, we identify the electronic response to the nematic phase in an orbital-dependent band shift that strictly follows the rotational symmetry of the lattice and disappears when the system restores C4 symmetry in the low temperature phase. Additionally, we report the observation of a distinct electronic reconstruction that cannot be explained by the known electronic orders in the system.},
doi = {10.1103/PhysRevLett.121.127001},
journal = {Physical Review Letters},
number = 12,
volume = 121,
place = {United States},
year = {2018},
month = {9}
}

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Figures / Tables:

FIG. 1 FIG. 1: Ba1−xNaxFe2As2 phase diagram and dilatometry measurements. (a) Phase diagram adapted from Ref. [9]. The inset shows the DQMO in the reentrant C4 phase. (b) Temperature-dependence of the thermal expansion coefficient, $α$, plotted as $α/T$ , and relative thermal expansion, ∆$L$b/$L$b, for the samples measured by ARPES. The insetmore » shows $α/T$ measured along the twinned ([100]) direction of BN25.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.