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Spectral evidence for unidirectional charge density wave in detwinned BaNi2As2
Abstract
In the iron-based superconductors, unconventional superconductivity emerges in proximity to intertwined electronic orders consisting of an electronic nematic order and a spin density wave (SDW). Recently, BaNi2As2, like its well-known iron-based analog BaFe2As2, has been discovered to host a symmetry-breaking structural transition but coupled to a unidirectional charge density wave (CDW) instead of SDW, providing a novel platform to study intertwined orders. Here, in this work, through a systematic angle-resolved photoemission spectroscopy study combined with a detwinning B1g uniaxial strain, we identify distinct spectral evidence of band evolution due to the structural transition as well as CDW-induced band folding. In contrast to the nematicity and spin density wave in BaFe2As2, the structural and CDW order parameters in BaNi2As2 are observed to be strongly coupled and do not separate in the presence of uniaxial strain. Furthermore, no nematic band splitting is resolved above the structural transition. Our measurements point to a likely lattice origin of the CDW order in BaNi2As2.
- Authors:
-
[1];
[2];
[7];
[9];
more »
- Rice Univ., Houston, TX (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Rice Univ., Houston, TX (United States)
- Rice Univ., Houston, TX (United States); Univ. of California, Berkeley, CA (United States)
- Univ. of Missouri, Columbia, MO (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Univ. of Oxford (United Kingdom)
- Canadian Light Source, Inc. (Canada)
- Univ. of British Columbia, Vancouver, BC (Canada); Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)
- Univ. of British Columbia, Vancouver, BC (Canada)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Univ. of California, Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); Robert A. Welch Foundation; Gordon and Betty Moore Foundation
- OSTI Identifier:
- 1994731
- Grant/Contract Number:
- AC05-00OR22725; SC0012311; SC0019114; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 108; 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; charge density waves; nematic phase transition; iron-based superconductors; angle-resolved photoemission spectroscopy
Citation Formats
Guo, Yucheng, Klemm, Mason, Oh, Ji Seop, Xie, Yaofeng, Lei, Bing-Hua, Moreschini, Luca, Chen, Cheng, Yue, Ziqin, Gorovikov, Sergey, Pedersen, Tor, Michiardi, Matteo, Zhdanovich, Sergey, Damascelli, Andrea, Denlinger, Jonathan, Hashimoto, Makoto, Lu, Donghui, Jozwiak, Chris, Bostwick, Aaron, Rotenberg, Eli, Mo, Sung-Kwan, Moore, II, Rob G., Kono, Junichiro, Birgeneau, Robert J., Singh, David J., Dai, Pengcheng, and Yi, Ming. Spectral evidence for unidirectional charge density wave in detwinned BaNi2As2. United States: N. p., 2023.
Web. doi:10.1103/physrevb.108.l081104.
Guo, Yucheng, Klemm, Mason, Oh, Ji Seop, Xie, Yaofeng, Lei, Bing-Hua, Moreschini, Luca, Chen, Cheng, Yue, Ziqin, Gorovikov, Sergey, Pedersen, Tor, Michiardi, Matteo, Zhdanovich, Sergey, Damascelli, Andrea, Denlinger, Jonathan, Hashimoto, Makoto, Lu, Donghui, Jozwiak, Chris, Bostwick, Aaron, Rotenberg, Eli, Mo, Sung-Kwan, Moore, II, Rob G., Kono, Junichiro, Birgeneau, Robert J., Singh, David J., Dai, Pengcheng, & Yi, Ming. Spectral evidence for unidirectional charge density wave in detwinned BaNi2As2. United States. https://doi.org/10.1103/physrevb.108.l081104
Guo, Yucheng, Klemm, Mason, Oh, Ji Seop, Xie, Yaofeng, Lei, Bing-Hua, Moreschini, Luca, Chen, Cheng, Yue, Ziqin, Gorovikov, Sergey, Pedersen, Tor, Michiardi, Matteo, Zhdanovich, Sergey, Damascelli, Andrea, Denlinger, Jonathan, Hashimoto, Makoto, Lu, Donghui, Jozwiak, Chris, Bostwick, Aaron, Rotenberg, Eli, Mo, Sung-Kwan, Moore, II, Rob G., Kono, Junichiro, Birgeneau, Robert J., Singh, David J., Dai, Pengcheng, and Yi, Ming. Tue .
"Spectral evidence for unidirectional charge density wave in detwinned BaNi2As2". United States. https://doi.org/10.1103/physrevb.108.l081104.
@article{osti_1994731,
title = {Spectral evidence for unidirectional charge density wave in detwinned BaNi2As2},
author = {Guo, Yucheng and Klemm, Mason and Oh, Ji Seop and Xie, Yaofeng and Lei, Bing-Hua and Moreschini, Luca and Chen, Cheng and Yue, Ziqin and Gorovikov, Sergey and Pedersen, Tor and Michiardi, Matteo and Zhdanovich, Sergey and Damascelli, Andrea and Denlinger, Jonathan and Hashimoto, Makoto and Lu, Donghui and Jozwiak, Chris and Bostwick, Aaron and Rotenberg, Eli and Mo, Sung-Kwan and Moore, II, Rob G. and Kono, Junichiro and Birgeneau, Robert J. and Singh, David J. and Dai, Pengcheng and Yi, Ming},
abstractNote = {In the iron-based superconductors, unconventional superconductivity emerges in proximity to intertwined electronic orders consisting of an electronic nematic order and a spin density wave (SDW). Recently, BaNi2As2, like its well-known iron-based analog BaFe2As2, has been discovered to host a symmetry-breaking structural transition but coupled to a unidirectional charge density wave (CDW) instead of SDW, providing a novel platform to study intertwined orders. Here, in this work, through a systematic angle-resolved photoemission spectroscopy study combined with a detwinning B1g uniaxial strain, we identify distinct spectral evidence of band evolution due to the structural transition as well as CDW-induced band folding. In contrast to the nematicity and spin density wave in BaFe2As2, the structural and CDW order parameters in BaNi2As2 are observed to be strongly coupled and do not separate in the presence of uniaxial strain. Furthermore, no nematic band splitting is resolved above the structural transition. Our measurements point to a likely lattice origin of the CDW order in BaNi2As2.},
doi = {10.1103/physrevb.108.l081104},
journal = {Physical Review. B},
number = 8,
volume = 108,
place = {United States},
year = {Tue Aug 08 00:00:00 EDT 2023},
month = {Tue Aug 08 00:00:00 EDT 2023}
}
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