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Title: Uniaxial strain control of spin-polarization in multicomponent nematic order of BaFe2As2

Abstract

The iron-based high temperature superconductors exhibit a rich phase diagram reflecting a complex interplay between spin, lattice, and orbital degrees of freedom. The nematic state observed in these compounds epitomizes this complexity, by entangling a real-space anisotropy in the spin fluctuation spectrum with ferro-orbital order and an orthorhombic lattice distortion. A subtle and less-explored facet of the interplay between these degrees of freedom arises from the sizable spin-orbit coupling present in these systems, which translates anisotropies in real space into anisotropies in spin space. We present nuclear magnetic resonance studies, which reveal that the magnetic fluctuation spectrum in the paramagnetic phase of BaFe2As2 acquires an anisotropic response in spin-space upon application of a tetragonal symmetry-breaking strain field. Lastly, our results unveil an internal spin structure of the nematic order parameter, indicating that electronic nematic materials may offer a route to magneto-mechanical control.

Authors:
 [1];  [2];  [1];  [1];  [3];  [3]; ORCiD logo [3];  [3];  [3];  [4]; ORCiD logo [1]
  1. Univ. of California, Davis, CA (United States)
  2. Dresden Univ. of Technology (Germany). Inst. for Solid State Physics
  3. Ames Lab., and Iowa State Univ., Ames, IA (United States)
  4. Univ. of Minnesota, Minneapolis, MN (United States)
Publication Date:
Research Org.:
Univ. of California, Davis, CA (United States); Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF)
OSTI Identifier:
1755110
Alternate Identifier(s):
OSTI ID: 1433673
Report Number(s):
IS-J-9635
Journal ID: ISSN 2041-1723; TRN: US2205457
Grant/Contract Number:  
NA0002908; AC02-07CH11358; DMR-1506961; SC0012336
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Kissikov, T., Sarkar, R., Lawson, M., Bush, B. T., Timmons, E. I., Tanatar, M. A., Prozorov, R., Bud’ko, S. L., Canfield, P. C., Fernandes, R. M., and Curro, N. J. Uniaxial strain control of spin-polarization in multicomponent nematic order of BaFe2As2. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03377-8.
Kissikov, T., Sarkar, R., Lawson, M., Bush, B. T., Timmons, E. I., Tanatar, M. A., Prozorov, R., Bud’ko, S. L., Canfield, P. C., Fernandes, R. M., & Curro, N. J. Uniaxial strain control of spin-polarization in multicomponent nematic order of BaFe2As2. United States. https://doi.org/10.1038/s41467-018-03377-8
Kissikov, T., Sarkar, R., Lawson, M., Bush, B. T., Timmons, E. I., Tanatar, M. A., Prozorov, R., Bud’ko, S. L., Canfield, P. C., Fernandes, R. M., and Curro, N. J. Tue . "Uniaxial strain control of spin-polarization in multicomponent nematic order of BaFe2As2". United States. https://doi.org/10.1038/s41467-018-03377-8. https://www.osti.gov/servlets/purl/1755110.
@article{osti_1755110,
title = {Uniaxial strain control of spin-polarization in multicomponent nematic order of BaFe2As2},
author = {Kissikov, T. and Sarkar, R. and Lawson, M. and Bush, B. T. and Timmons, E. I. and Tanatar, M. A. and Prozorov, R. and Bud’ko, S. L. and Canfield, P. C. and Fernandes, R. M. and Curro, N. J.},
abstractNote = {The iron-based high temperature superconductors exhibit a rich phase diagram reflecting a complex interplay between spin, lattice, and orbital degrees of freedom. The nematic state observed in these compounds epitomizes this complexity, by entangling a real-space anisotropy in the spin fluctuation spectrum with ferro-orbital order and an orthorhombic lattice distortion. A subtle and less-explored facet of the interplay between these degrees of freedom arises from the sizable spin-orbit coupling present in these systems, which translates anisotropies in real space into anisotropies in spin space. We present nuclear magnetic resonance studies, which reveal that the magnetic fluctuation spectrum in the paramagnetic phase of BaFe2As2 acquires an anisotropic response in spin-space upon application of a tetragonal symmetry-breaking strain field. Lastly, our results unveil an internal spin structure of the nematic order parameter, indicating that electronic nematic materials may offer a route to magneto-mechanical control.},
doi = {10.1038/s41467-018-03377-8},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Tue Mar 13 00:00:00 EDT 2018},
month = {Tue Mar 13 00:00:00 EDT 2018}
}

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Works referencing / citing this record:

Magnetic phase diagram of the iron pnictides in the presence of spin-orbit coupling: Frustration between C 2 and C 4 magnetic phases
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Probing the reconstructed Fermi surface of antiferromagnetic BaFe2As2 in one domain
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Piezoelectric-based uniaxial pressure cell with integrated force and displacement sensors
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Emergent Magnetic Degeneracy in Iron Pnictides due to the Interplay between Spin-Orbit Coupling and Quantum Fluctuations
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