Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime

Yota Komiyama; Yoichi Ikeda; Takanori Taniguchi; Travis J. Williams; Masaaki Matsuda; Shinichiro Asai; Takatsugu Masuda; Hideki Kuwahara; Haruhiko Kuroe; Takayuki Kawamata; Isao Watanabe; Masaki Fujita; Tadashi Adachi

doi:10.7566/JPSJ.95.073701

Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime

Yota Komiyama
, Yoichi Ikeda
, Takanori Taniguchi
, Travis J. Williams
, Masaaki Matsuda
, Shinichiro Asai
, Takatsugu Masuda
, Hideki Kuwahara
, Haruhiko Kuroe
, Takayuki Kawamata
, Isao Watanabe
, Masaki Fujita
, Tadashi Adachi

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Research output: Contribution to journal › Article › peer-review

Abstract

Elastic neutron scattering experiments showed incommensurate antiferromagnetic peaks in 5% Fe-substituted Bi-2201 cuprate in the non-superconducting heavily overdoped regime. The incommensurability δ ∼ 0.21 is comparable to that observed in Fe-substituted Bi-2201 in the overdoped regime. [Hiraka et al., Phys. Rev. B 81, 144501 (2010).] The magnetic correlation length is comparable between the overdoped and non-superconducting heavily overdoped regimes. It is plausible that incommensurate antiferromagnetic order is induced and stabilized by Fe in the heavily overdoped regime, which suggests a robust antiferromagnetic correlation beyond the superconducting dome in the phase diagram.

Original language	English
Article number	073701
Journal	Journal of the Physical Society of Japan
Volume	95
Issue number	7
DOIs	https://doi.org/10.7566/JPSJ.95.073701
State	Published - Jul 15 2026

Funding

The authors would like to thank H. Hiraka for providing the neutron-scattering data for Fe-substituted Bi-2201 in the overdoped regime. We also thank Mr. M. Ohkawara for his kind support with the neutron experiments at JRR-3. Y.K. was supported by the RIKEN Junior Research Associate Program. This research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The beam time was allocated to HB-3 on proposal number IPTS-25010. This work was partly supported by the US Japan Collaborative Program on Neutron Scattering. The neutron scattering experiments were performed under the Joint-Use Research Program for Neutron Scattering, Institute for Solid State Physics (ISSP), University of Tokyo, and the Japan Research Reactor JRR-3 (TOPAN on IRT 22402, AKANE on IRT on 24409 and HER on No. 22548). We gratefully acknowledge support from the Center of Neutron Science for Advanced Materials, Institute for Materials Research, Tohoku University (GIMRT: 202112-CNKXX-0004).

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Komiyama, Y., Ikeda, Y., Taniguchi, T., Williams, T. J., Matsuda, M., Asai, S., Masuda, T., Kuwahara, H., Kuroe, H., Kawamata, T., Watanabe, I., Fujita, M., & Adachi, T. (2026). Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime. Journal of the Physical Society of Japan, 95(7), Article 073701. https://doi.org/10.7566/JPSJ.95.073701

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title = "Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime",

abstract = "Elastic neutron scattering experiments showed incommensurate antiferromagnetic peaks in 5\% Fe-substituted Bi-2201 cuprate in the non-superconducting heavily overdoped regime. The incommensurability δ ∼ 0.21 is comparable to that observed in Fe-substituted Bi-2201 in the overdoped regime. [Hiraka et al., Phys. Rev. B 81, 144501 (2010).] The magnetic correlation length is comparable between the overdoped and non-superconducting heavily overdoped regimes. It is plausible that incommensurate antiferromagnetic order is induced and stabilized by Fe in the heavily overdoped regime, which suggests a robust antiferromagnetic correlation beyond the superconducting dome in the phase diagram.",

author = "Yota Komiyama and Yoichi Ikeda and Takanori Taniguchi and Williams, \{Travis J.\} and Masaaki Matsuda and Shinichiro Asai and Takatsugu Masuda and Hideki Kuwahara and Haruhiko Kuroe and Takayuki Kawamata and Isao Watanabe and Masaki Fujita and Tadashi Adachi",

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Komiyama, Y, Ikeda, Y, Taniguchi, T, Williams, TJ, Matsuda, M, Asai, S, Masuda, T, Kuwahara, H, Kuroe, H, Kawamata, T, Watanabe, I, Fujita, M & Adachi, T 2026, 'Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime', Journal of the Physical Society of Japan, vol. 95, no. 7, 073701. https://doi.org/10.7566/JPSJ.95.073701

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T1 - Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime

AU - Komiyama, Yota

AU - Ikeda, Yoichi

AU - Taniguchi, Takanori

AU - Williams, Travis J.

AU - Matsuda, Masaaki

AU - Asai, Shinichiro

AU - Masuda, Takatsugu

AU - Kuwahara, Hideki

AU - Kuroe, Haruhiko

AU - Kawamata, Takayuki

AU - Watanabe, Isao

AU - Fujita, Masaki

AU - Adachi, Tadashi

PY - 2026/7/15

Y1 - 2026/7/15

N2 - Elastic neutron scattering experiments showed incommensurate antiferromagnetic peaks in 5% Fe-substituted Bi-2201 cuprate in the non-superconducting heavily overdoped regime. The incommensurability δ ∼ 0.21 is comparable to that observed in Fe-substituted Bi-2201 in the overdoped regime. [Hiraka et al., Phys. Rev. B 81, 144501 (2010).] The magnetic correlation length is comparable between the overdoped and non-superconducting heavily overdoped regimes. It is plausible that incommensurate antiferromagnetic order is induced and stabilized by Fe in the heavily overdoped regime, which suggests a robust antiferromagnetic correlation beyond the superconducting dome in the phase diagram.

AB - Elastic neutron scattering experiments showed incommensurate antiferromagnetic peaks in 5% Fe-substituted Bi-2201 cuprate in the non-superconducting heavily overdoped regime. The incommensurability δ ∼ 0.21 is comparable to that observed in Fe-substituted Bi-2201 in the overdoped regime. [Hiraka et al., Phys. Rev. B 81, 144501 (2010).] The magnetic correlation length is comparable between the overdoped and non-superconducting heavily overdoped regimes. It is plausible that incommensurate antiferromagnetic order is induced and stabilized by Fe in the heavily overdoped regime, which suggests a robust antiferromagnetic correlation beyond the superconducting dome in the phase diagram.

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Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime

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