Spin-Phonon Coupling in Iron-Doped Ultrathin Bismuth Halide Perovskite Derivatives

Yifeng Liu; Qing Ai; Gaihua Ye; Zhipeng Ye; Jakub Hrubý; Fan Wang; Tomas Orlando; Yuguo Wang; Jiaming Luo; Qiyi Fang; Boyu Zhang; Tianshu Zhai; Chen-yang Lin; Clyde Xu; Yifan Zhu; Tanguy Terlier; Stephen Hill; Hanyu Zhu; Rui He; Jun Lou

doi:10.1021/acsnano.4c03216

Spin-Phonon Coupling in Iron-Doped Ultrathin Bismuth Halide Perovskite Derivatives

Yifeng Liu (Co-first Author), Qing Ai (Co-first Author), Gaihua Ye, Zhipeng Ye, Jakub Hrubý, Fan Wang, Tomas Orlando, Yuguo Wang, Jiaming Luo, Qiyi Fang, Boyu Zhang, Tianshu Zhai, Chen-yang Lin, Clyde Xu, Yifan Zhu, Tanguy Terlier, Stephen Hill, Hanyu Zhu^*, Rui He^*, Jun Lou^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

5 Citations (Scopus)

Abstract

Spin in semiconductors facilitates magnetically controlled optoelectronic and spintronic devices. In metal halide perovskites (MHPs), doping magnetic ions is proven to be a simple and efficient approach to introducing a spin magnetic momentum. In this work, we present a facile metal ion doping protocol through the vapor-phase metal halide insertion reaction to the chemical vapor deposition (CVD)-grown ultrathin Cs₃BiBr₆ perovskites. The Fe-doped bismuth halide (Fe:CBBr) perovskites demonstrate that the iron spins are successfully incorporated into the lattice, as revealed by the spin-phonon coupling below the critical temperature T_c around 50 K observed through temperature-dependent Raman spectroscopy. Furthermore, the phonons exhibit significant softening under an applied magnetic field, possibly originating from magnetostriction and spin exchange interaction. The spin-phonon coupling in Fe:CBBr potentially provides an efficient way to tune the spin and lattice parameters for halide perovskite-based spintronics. © 2024 American Chemical Society.

Original language	English
Pages (from-to)	12560-12568
Number of pages	9
Journal	ACS Nano
Volume	18
Issue number	19
Online published	3 May 2024
DOIs	https://doi.org/10.1021/acsnano.4c03216
Publication status	Published - 14 May 2024
Externally published	Yes

Funding

This work is mainly supported by the Welch Foundation Grant C-1716. G.Y., Z.Y., and R.H. acknowledge the support from the NSF Grant No. DMR-2104036. J.L. and H.Z. acknowledge the Welch Foundation Grant C-2128. Work performed at the National High Magnetic Field Laboratory is supported by the US National Science Foundation (DMR-2128556) and the State of Florida. Characterizations including AFM, SEM, ambient Raman, ToF-SIMS, and XPS were conducted using resources of the Shared Equipment Authority at Rice University. ToF-SIMS analysis was carried out with support provided by the National Science Foundation CBET-1626418. Y.L. dedicates this work to the memory of Professor Marc Robert (1950−2022).

Research Keywords

cation doping
lead-free perovskites
magneto-Raman
spin-phonon coupling
temperature-dependent Raman
ultrathin crystals

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abstract = "Spin in semiconductors facilitates magnetically controlled optoelectronic and spintronic devices. In metal halide perovskites (MHPs), doping magnetic ions is proven to be a simple and efficient approach to introducing a spin magnetic momentum. In this work, we present a facile metal ion doping protocol through the vapor-phase metal halide insertion reaction to the chemical vapor deposition (CVD)-grown ultrathin Cs3BiBr6 perovskites. The Fe-doped bismuth halide (Fe:CBBr) perovskites demonstrate that the iron spins are successfully incorporated into the lattice, as revealed by the spin-phonon coupling below the critical temperature Tc around 50 K observed through temperature-dependent Raman spectroscopy. Furthermore, the phonons exhibit significant softening under an applied magnetic field, possibly originating from magnetostriction and spin exchange interaction. The spin-phonon coupling in Fe:CBBr potentially provides an efficient way to tune the spin and lattice parameters for halide perovskite-based spintronics. {\textcopyright} 2024 American Chemical Society.",

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T1 - Spin-Phonon Coupling in Iron-Doped Ultrathin Bismuth Halide Perovskite Derivatives

AU - Liu, Yifeng

AU - Ai, Qing

AU - Ye, Gaihua

AU - Ye, Zhipeng

AU - Hrubý, Jakub

AU - Wang, Fan

AU - Orlando, Tomas

AU - Wang, Yuguo

AU - Luo, Jiaming

AU - Fang, Qiyi

AU - Zhang, Boyu

AU - Zhai, Tianshu

AU - Lin, Chen-yang

AU - Xu, Clyde

AU - Zhu, Yifan

AU - Terlier, Tanguy

AU - Hill, Stephen

AU - Zhu, Hanyu

AU - He, Rui

AU - Lou, Jun

PY - 2024/5/14

Y1 - 2024/5/14

N2 - Spin in semiconductors facilitates magnetically controlled optoelectronic and spintronic devices. In metal halide perovskites (MHPs), doping magnetic ions is proven to be a simple and efficient approach to introducing a spin magnetic momentum. In this work, we present a facile metal ion doping protocol through the vapor-phase metal halide insertion reaction to the chemical vapor deposition (CVD)-grown ultrathin Cs3BiBr6 perovskites. The Fe-doped bismuth halide (Fe:CBBr) perovskites demonstrate that the iron spins are successfully incorporated into the lattice, as revealed by the spin-phonon coupling below the critical temperature Tc around 50 K observed through temperature-dependent Raman spectroscopy. Furthermore, the phonons exhibit significant softening under an applied magnetic field, possibly originating from magnetostriction and spin exchange interaction. The spin-phonon coupling in Fe:CBBr potentially provides an efficient way to tune the spin and lattice parameters for halide perovskite-based spintronics. © 2024 American Chemical Society.

AB - Spin in semiconductors facilitates magnetically controlled optoelectronic and spintronic devices. In metal halide perovskites (MHPs), doping magnetic ions is proven to be a simple and efficient approach to introducing a spin magnetic momentum. In this work, we present a facile metal ion doping protocol through the vapor-phase metal halide insertion reaction to the chemical vapor deposition (CVD)-grown ultrathin Cs3BiBr6 perovskites. The Fe-doped bismuth halide (Fe:CBBr) perovskites demonstrate that the iron spins are successfully incorporated into the lattice, as revealed by the spin-phonon coupling below the critical temperature Tc around 50 K observed through temperature-dependent Raman spectroscopy. Furthermore, the phonons exhibit significant softening under an applied magnetic field, possibly originating from magnetostriction and spin exchange interaction. The spin-phonon coupling in Fe:CBBr potentially provides an efficient way to tune the spin and lattice parameters for halide perovskite-based spintronics. © 2024 American Chemical Society.

KW - cation doping

KW - lead-free perovskites

KW - magneto-Raman

KW - spin-phonon coupling

KW - temperature-dependent Raman

KW - ultrathin crystals

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JO - ACS Nano

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Spin-Phonon Coupling in Iron-Doped Ultrathin Bismuth Halide Perovskite Derivatives

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