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Title: Nematic transitions in iron pnictide superconductors imaged with a quantum gas

Abstract

The Scanning Quantum Cryogenic Atom Microscope (SQCRAMscope) uses an atomic Bose–Einstein condensate to measure magnetic fields emanating from solid-state samples. The quantum sensor does so with unprecedented d.c. sensitivity at micrometre resolution, from room to cryogenic temperatures. An additional advantage of the SQCRAMscope is the preservation of optical access to the sample so that magnetometry imaging of, for example, electron transport may be performed in concert with other imaging techniques. Here, we apply this multimodal imaging capability to the study of nematicity in iron pnictide high-temperature superconductors, where the relationship between electronic and structural symmetry breaking resulting in a nematic phase is under debate. We combine the SQCRAMscope with an in situ microscope that measures optical birefringence near the surface. This enables simultaneous and spatially resolved detection of both bulk and near-surface manifestations of nematicity via transport and structural deformation channels, respectively. By performing local measurements of emergent resistivity anisotropy in iron pnictides, we observe sharp, nearly concurrent transport and structural transitions. More broadly, these measurements demonstrate the SQCRAMscope’s ability to reveal important insights into the physics of complex quantum materials.

Authors:
 [1]; ORCiD logo [1];  [1];  [2];  [2]; ORCiD logo [1]
  1. Stanford Univ., CA (United States)
  2. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1616847
Grant/Contract Number:  
DGE-114747; AC02-76SF00515; SC0019174; N00014- 17-1-2248; GBMF3502; W911NF1910392
Resource Type:
Accepted Manuscript
Journal Name:
Nature Physics
Additional Journal Information:
Journal Volume: 16; Journal Issue: 5; Journal ID: ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Yang, Fan, Taylor, Stephen F., Edkins, Stephen D., Palmstrom, Johanna C., Fisher, Ian R., and Lev, Benjamin L. Nematic transitions in iron pnictide superconductors imaged with a quantum gas. United States: N. p., 2020. Web. doi:10.1038/s41567-020-0826-8.
Yang, Fan, Taylor, Stephen F., Edkins, Stephen D., Palmstrom, Johanna C., Fisher, Ian R., & Lev, Benjamin L. Nematic transitions in iron pnictide superconductors imaged with a quantum gas. United States. doi:https://doi.org/10.1038/s41567-020-0826-8
Yang, Fan, Taylor, Stephen F., Edkins, Stephen D., Palmstrom, Johanna C., Fisher, Ian R., and Lev, Benjamin L. Mon . "Nematic transitions in iron pnictide superconductors imaged with a quantum gas". United States. doi:https://doi.org/10.1038/s41567-020-0826-8. https://www.osti.gov/servlets/purl/1616847.
@article{osti_1616847,
title = {Nematic transitions in iron pnictide superconductors imaged with a quantum gas},
author = {Yang, Fan and Taylor, Stephen F. and Edkins, Stephen D. and Palmstrom, Johanna C. and Fisher, Ian R. and Lev, Benjamin L.},
abstractNote = {The Scanning Quantum Cryogenic Atom Microscope (SQCRAMscope) uses an atomic Bose–Einstein condensate to measure magnetic fields emanating from solid-state samples. The quantum sensor does so with unprecedented d.c. sensitivity at micrometre resolution, from room to cryogenic temperatures. An additional advantage of the SQCRAMscope is the preservation of optical access to the sample so that magnetometry imaging of, for example, electron transport may be performed in concert with other imaging techniques. Here, we apply this multimodal imaging capability to the study of nematicity in iron pnictide high-temperature superconductors, where the relationship between electronic and structural symmetry breaking resulting in a nematic phase is under debate. We combine the SQCRAMscope with an in situ microscope that measures optical birefringence near the surface. This enables simultaneous and spatially resolved detection of both bulk and near-surface manifestations of nematicity via transport and structural deformation channels, respectively. By performing local measurements of emergent resistivity anisotropy in iron pnictides, we observe sharp, nearly concurrent transport and structural transitions. More broadly, these measurements demonstrate the SQCRAMscope’s ability to reveal important insights into the physics of complex quantum materials.},
doi = {10.1038/s41567-020-0826-8},
journal = {Nature Physics},
number = 5,
volume = 16,
place = {United States},
year = {2020},
month = {3}
}

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