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

journal article·2024-05-14

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

ACS Nano· Volume 18· Issue 19

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Source abstract

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 Cs 3 BiBr 6 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.

Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials Materials processing

OpenAlex topics: Perovskite Materials and Applications · Magnetic and transport properties of perovskites and related materials · Optical properties and cooling technologies in crystalline materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States

Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas 79409, United States

National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States

Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States

SIMS Laboratory, Shared Equipment Authority, Rice University, Houston, Texas 77005, United States

Department of Physics, Florida State University, Tallahassee, Florida 32306, United States

Funding

Welch Foundation · Division of Chemical, Bioengineering, Environmental, and Transport Systems · Division of Materials Research

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