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

Journal Article · · Physical Review Letters
 [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

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.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; AC03-76SF008; SC0018197; AC02-05-CH11231; 2016YFA0300504
OSTI ID:
1479444
Alternate ID(s):
OSTI ID: 1471277
Journal Information:
Physical Review Letters, Vol. 121, Issue 12; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Figures / Tables (4)


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