Observation of a superconducting state of a topological superconductor candidate, FeTe0.6Se0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy

Kosuke Ohnishi; Sachin Gupta; Shigeru Kasahara; Yuichi Kasahara; Yuji Matsuda; Ei Shigematsu; Ryo Ohshima; Yuichiro Ando; Masashi Shiraishi

doi:10.35848/1882-0786/ac1ca4

Observation of a superconducting state of a topological superconductor candidate, FeTe_0.6Se_0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy

Kosuke Ohnishi, Sachin Gupta, Shigeru Kasahara, Yuichi Kasahara, Yuji Matsuda, Ei Shigematsu, Ryo Ohshima, Yuichiro Ando, Masashi Shiraishi

Research Institute for Interdisciplinary Science

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

Abstract

Iron selenide telluride, FeTeSe, is an attractive layered material for both superconductivity and spintronics applications. FeTeSe enables Ising-type superconductivity, which involves spin-momentum locking. We report superconductivity of mechanically exfoliated thin film FeTe0.6Se0.4 that equips ferromagnetic electrodes with perpendicular magnetic anisotropy to detect possible Ising spin paring. The superconducting transition is observed at T = 15 K. More importantly, the upper critical field of FeTe0.6Se0.4 is anisotropic and the in-plane upper critical field is measured to be 145 T. These results show that the superconductivity of thin film FeTe0.6Se0.4 is robust and FeTe0.6Se0.4 can be a potential material stage for super-spintronics.

Original language	English
Article number	093002
Journal	Applied Physics Express
Volume	14
Issue number	9
DOIs	https://doi.org/10.35848/1882-0786/ac1ca4
Publication status	Published - Sep 2021

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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Ohnishi, K., Gupta, S., Kasahara, S., Kasahara, Y., Matsuda, Y., Shigematsu, E., Ohshima, R., Ando, Y., & Shiraishi, M. (2021). Observation of a superconducting state of a topological superconductor candidate, FeTe_0.6Se_0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy. Applied Physics Express, 14(9), [093002]. https://doi.org/10.35848/1882-0786/ac1ca4

Observation of a superconducting state of a topological superconductor candidate, FeTe_0.6Se_0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy. / Ohnishi, Kosuke; Gupta, Sachin; Kasahara, Shigeru; Kasahara, Yuichi; Matsuda, Yuji; Shigematsu, Ei; Ohshima, Ryo; Ando, Yuichiro; Shiraishi, Masashi.

In: Applied Physics Express, Vol. 14, No. 9, 093002, 09.2021.

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

Ohnishi, K, Gupta, S, Kasahara, S, Kasahara, Y, Matsuda, Y, Shigematsu, E, Ohshima, R, Ando, Y & Shiraishi, M 2021, 'Observation of a superconducting state of a topological superconductor candidate, FeTe_0.6Se_0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy', Applied Physics Express, vol. 14, no. 9, 093002. https://doi.org/10.35848/1882-0786/ac1ca4

Ohnishi, Kosuke ; Gupta, Sachin ; Kasahara, Shigeru ; Kasahara, Yuichi ; Matsuda, Yuji ; Shigematsu, Ei ; Ohshima, Ryo ; Ando, Yuichiro ; Shiraishi, Masashi. / Observation of a superconducting state of a topological superconductor candidate, FeTe_0.6Se_0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy. In: Applied Physics Express. 2021 ; Vol. 14, No. 9.

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abstract = "Iron selenide telluride, FeTeSe, is an attractive layered material for both superconductivity and spintronics applications. FeTeSe enables Ising-type superconductivity, which involves spin-momentum locking. We report superconductivity of mechanically exfoliated thin film FeTe0.6Se0.4 that equips ferromagnetic electrodes with perpendicular magnetic anisotropy to detect possible Ising spin paring. The superconducting transition is observed at T = 15 K. More importantly, the upper critical field of FeTe0.6Se0.4 is anisotropic and the in-plane upper critical field is measured to be 145 T. These results show that the superconductivity of thin film FeTe0.6Se0.4 is robust and FeTe0.6Se0.4 can be a potential material stage for super-spintronics.",

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AU - Gupta, Sachin

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AU - Kasahara, Yuichi

AU - Matsuda, Yuji

AU - Shigematsu, Ei

AU - Ohshima, Ryo

AU - Ando, Yuichiro

AU - Shiraishi, Masashi

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AB - Iron selenide telluride, FeTeSe, is an attractive layered material for both superconductivity and spintronics applications. FeTeSe enables Ising-type superconductivity, which involves spin-momentum locking. We report superconductivity of mechanically exfoliated thin film FeTe0.6Se0.4 that equips ferromagnetic electrodes with perpendicular magnetic anisotropy to detect possible Ising spin paring. The superconducting transition is observed at T = 15 K. More importantly, the upper critical field of FeTe0.6Se0.4 is anisotropic and the in-plane upper critical field is measured to be 145 T. These results show that the superconductivity of thin film FeTe0.6Se0.4 is robust and FeTe0.6Se0.4 can be a potential material stage for super-spintronics.

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Observation of a superconducting state of a topological superconductor candidate, FeTe_0.6Se_0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy

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