Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi2Te2Se and Bi2Se2Te

Cheng, Huang; Xu, Yixuan; Zhou, Xuefeng; Gong, Yu; Yang, Dongliang; Li, Xiaodong; Li, Yanchun

doi:10.1039/d2dt01545e

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2024

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Cited by 3 publications

References 36 publications

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Pressure-induced superconductivity and phase transitions in Bi2S3 under non-hydrostatic conditions

Xu,

Cheng,

et al. 2024

Journal of Alloys and Compounds

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Pressure-induced superconductivity and phase transitions in Bi2S3 under non-hydrostatic conditions

Xu,

Cheng,

et al. 2024

Journal of Alloys and Compounds

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Nonlinear optical properties of Bi₂Se₂Te for harmonic mode-locked and broadband Q-switched pulses generation

Liu,

Yu,

et al. 2024

Opt. Express

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The nonlinear optical properties of bismuth selenium telluride (Bi2Se2Te), a few-layer two-dimensional topological insulator material, have been investigated in this work. An erbium-doped fiber laser (EDFL) based on Bi2Se2Te (BST) nanosheets as saturable absorber (SA) was demonstrated. The BST SA with saturation intensity and modulation depth of 4.96 MW/cm2 and 2.45%, respectively, was obtained by mixing the layered BST nanosheets solution prepared by liquid phase exfoliation with a polyvinyl alcohol solution. On the basis of a 3.81 MHz fundamental repetition rate (RPR), seven types of high-order harmonic mode-locked (HML) at 300.2, 392.7, 424.2, 454.3, 516.9, 547.5 and 611.7 MHz were obtained, corresponding to 79th, 103rd, 111th, 119th, 135th, 144th and 160th harmonics, with the maximum 3-dB spectral width (2.31, 2.55, 2.55, 2.85, 2.96, 2.73 and 2.85 nm) and the narrowest pulse widths (1.11, 1.00, 1.00 ps, 896, 862, 935 and 895 fs), respectively. After reducing the cavity length by removing 30 m of single-mode fiber, a Q-switched operation with a maximum single pulse energy of 29.62 nJ and a tuning range of up to 81.91 kHz was obtained. The experimental results fully demonstrated that BST SA provided an important reference in the design of generating high RPR ultra-short pulses and Q-switched fiber lasers.

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Pressure-Induced Superconductivity and Phase Transitions in Bi2s3 Under Non-Hydrostatic Conditions

Xu¹,

Cheng²,

Li³

et al. 2023

Preprint

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Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi₂Te₂Se and Bi₂Se₂Te

Abstract: Over the past decade, external pressure has been found to play an important role in modulating the structures and properties of sesqui-chalcogenides, but several key puzzles still remain to be...

Cited by 3 publications

References 36 publications

Pressure-induced superconductivity and phase transitions in Bi2S3 under non-hydrostatic conditions

Pressure-induced superconductivity and phase transitions in Bi2S3 under non-hydrostatic conditions

Nonlinear optical properties of Bi₂Se₂Te for harmonic mode-locked and broadband Q-switched pulses generation

Pressure-Induced Superconductivity and Phase Transitions in Bi2s3 Under Non-Hydrostatic Conditions

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Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi2Te2Se and Bi2Se2Te

Abstract: Over the past decade, external pressure has been found to play an important role in modulating the structures and properties of sesqui-chalcogenides, but several key puzzles still remain to be...

Cited by 3 publications

References 36 publications

Pressure-induced superconductivity and phase transitions in Bi2S3 under non-hydrostatic conditions

Pressure-induced superconductivity and phase transitions in Bi2S3 under non-hydrostatic conditions

Nonlinear optical properties of Bi2Se2Te for harmonic mode-locked and broadband Q-switched pulses generation

Pressure-Induced Superconductivity and Phase Transitions in Bi2s3 Under Non-Hydrostatic Conditions

Contact Info

Product

Resources

About

Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi₂Te₂Se and Bi₂Se₂Te

Nonlinear optical properties of Bi₂Se₂Te for harmonic mode-locked and broadband Q-switched pulses generation