Chemical Vapor Deposition of Superconducting FeTe1-xSex Nanosheets

Dianyi Hu; Chen Ye; Xiaowei Wang; Xiaoxu Zhao; Lixing Kang; Jiawei Liu; Ruihuan Duan; Xun Cao; Yanchao He; Junxiong Hu; Shengyao Li; Qingsheng Zeng; Ya Deng; Peng-Fei Yin; Ariando Ariando; Yizhong Huang; Hua Zhang; Xiao Renshaw Wang; Zheng Liu

doi:10.1021/acs.nanolett.1c01577

Chemical Vapor Deposition of Superconducting FeTe_1-xSe_xNanosheets

Dianyi Hu, Chen Ye, Xiaowei Wang, Xiaoxu Zhao, Lixing Kang^*, Jiawei Liu, Ruihuan Duan, Xun Cao, Yanchao He, Junxiong Hu, Shengyao Li, Qingsheng Zeng, Ya Deng, Peng-Fei Yin, Ariando Ariando, Yizhong Huang, Hua Zhang, Xiao Renshaw Wang^*, Zheng Liu^*

^*Corresponding author for this work

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

31 Citations (Scopus)

Abstract

FeTe_1–xSe_x, a promising layered material used to realize Majorana zero modes, has attracted enormous attention in recent years. Pulsed laser deposition (PLD) and molecular-beam epitaxy (MBE) are the routine growth methods used to prepare FeTe_1–xSe_x thin films. However, both methods require high-vacuum conditions and polished crystalline substrates, which hinder the exploration of the topological superconductivity and related nanodevices of this material. Here we demonstrate the growth of the ultrathin FeTe_1–xSe_x superconductor by a facile, atmospheric pressure chemical vapor deposition (CVD) method. The composition and thickness of the two-dimensional (2D) FeTe_1–xSe_x nanosheets are well controlled by tuning the experimental conditions. The as-prepared FeTe0.8Se0.2 nanosheet exhibits an onset superconducting transition temperature of 12.4 K, proving its high quality. Our work offers an effective strategy for preparing the ultrathin FeTe_1–xSe_x superconductor, which could become a promising platform for further study of the unconventional superconductivity in the FeTe_1–xSe_x system.

Original language	English
Pages (from-to)	5338–5344
Journal	Nano Letters
Volume	21
Issue number	12
Online published	9 Jun 2021
DOIs	https://doi.org/10.1021/acs.nanolett.1c01577
Publication status	Published - 23 Jun 2021

Funding

Z.L. acknowledges support from the National Research Foundation Singapore Programme (NRF-CRP21-2018-0007 and NRF-CRP22-2019-0007), the Singapore Ministry of Education via AcRF Tier 3 Programme “Geometrical Quantum Materials” (MOE2018-T3-1-002), AcRF Tier 2 (MOE2016-T2-1-131), and AcRF Tier 1 (RG4/17 and RG7/18). This research is also supported by A*STAR under its AME IRG grant (project no. A2083c0052). X.R.W. acknowledges support from Academic Research Fund Tier 1 (grant no. RG177/18) and Tier 2 (grant no. MOE-T2EP50120-006) from the Singapore Ministry of Education and the Agency for Science, Technology and Research (A*STAR) under its AME IRG grant (project no. A20E5c0094). X.Z. is grateful for support from the Presidential Postdoctoral Fellowship, Nanyang Technological University, Singapore via grant 03INS000973C150. We acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for the use of their electron microscopy. H.Z. is grateful for support from the Research Grants Council of Hong Kong (AoE/P-701/20), ITC via the Hong Kong Branch of the National Precious Metals Material Engineering Research Center (NPMM), a start-up grant (project no. 9380100) and grants (project nos. 9610478, 9680314, and 1886921) from the City University of Hong Kong and the Science Technology and Innovation Committee of Shenzhen Municipality (grant no. JCYJ20200109143412311). J.X.H. and A.A. acknowledge the Ministry of Education (MOE) Singapore under the Academic Research Fund Tier 2 (grant no. MOE-T2EP50120-0015) for the financial support.

Research Keywords

chemical vapor deposition
FeTeSe
iron-based superconductor

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title = "Chemical Vapor Deposition of Superconducting FeTe1-xSex Nanosheets",

abstract = "FeTe1–xSex, a promising layered material used to realize Majorana zero modes, has attracted enormous attention in recent years. Pulsed laser deposition (PLD) and molecular-beam epitaxy (MBE) are the routine growth methods used to prepare FeTe1–xSex thin films. However, both methods require high-vacuum conditions and polished crystalline substrates, which hinder the exploration of the topological superconductivity and related nanodevices of this material. Here we demonstrate the growth of the ultrathin FeTe1–xSex superconductor by a facile, atmospheric pressure chemical vapor deposition (CVD) method. The composition and thickness of the two-dimensional (2D) FeTe1–xSex nanosheets are well controlled by tuning the experimental conditions. The as-prepared FeTe0.8Se0.2 nanosheet exhibits an onset superconducting transition temperature of 12.4 K, proving its high quality. Our work offers an effective strategy for preparing the ultrathin FeTe1–xSex superconductor, which could become a promising platform for further study of the unconventional superconductivity in the FeTe1–xSex system.",

keywords = "chemical vapor deposition, FeTeSe, iron-based superconductor",

author = "Dianyi Hu and Chen Ye and Xiaowei Wang and Xiaoxu Zhao and Lixing Kang and Jiawei Liu and Ruihuan Duan and Xun Cao and Yanchao He and Junxiong Hu and Shengyao Li and Qingsheng Zeng and Ya Deng and Peng-Fei Yin and Ariando Ariando and Yizhong Huang and Hua Zhang and Wang, {Xiao Renshaw} and Zheng Liu",

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AU - Hu, Dianyi

AU - Ye, Chen

AU - Wang, Xiaowei

AU - Zhao, Xiaoxu

AU - Kang, Lixing

AU - Liu, Jiawei

AU - Duan, Ruihuan

AU - Cao, Xun

AU - He, Yanchao

AU - Hu, Junxiong

AU - Li, Shengyao

AU - Zeng, Qingsheng

AU - Deng, Ya

AU - Yin, Peng-Fei

AU - Ariando, Ariando

AU - Huang, Yizhong

AU - Zhang, Hua

AU - Wang, Xiao Renshaw

AU - Liu, Zheng

PY - 2021/6/23

Y1 - 2021/6/23

N2 - FeTe1–xSex, a promising layered material used to realize Majorana zero modes, has attracted enormous attention in recent years. Pulsed laser deposition (PLD) and molecular-beam epitaxy (MBE) are the routine growth methods used to prepare FeTe1–xSex thin films. However, both methods require high-vacuum conditions and polished crystalline substrates, which hinder the exploration of the topological superconductivity and related nanodevices of this material. Here we demonstrate the growth of the ultrathin FeTe1–xSex superconductor by a facile, atmospheric pressure chemical vapor deposition (CVD) method. The composition and thickness of the two-dimensional (2D) FeTe1–xSex nanosheets are well controlled by tuning the experimental conditions. The as-prepared FeTe0.8Se0.2 nanosheet exhibits an onset superconducting transition temperature of 12.4 K, proving its high quality. Our work offers an effective strategy for preparing the ultrathin FeTe1–xSex superconductor, which could become a promising platform for further study of the unconventional superconductivity in the FeTe1–xSex system.

AB - FeTe1–xSex, a promising layered material used to realize Majorana zero modes, has attracted enormous attention in recent years. Pulsed laser deposition (PLD) and molecular-beam epitaxy (MBE) are the routine growth methods used to prepare FeTe1–xSex thin films. However, both methods require high-vacuum conditions and polished crystalline substrates, which hinder the exploration of the topological superconductivity and related nanodevices of this material. Here we demonstrate the growth of the ultrathin FeTe1–xSex superconductor by a facile, atmospheric pressure chemical vapor deposition (CVD) method. The composition and thickness of the two-dimensional (2D) FeTe1–xSex nanosheets are well controlled by tuning the experimental conditions. The as-prepared FeTe0.8Se0.2 nanosheet exhibits an onset superconducting transition temperature of 12.4 K, proving its high quality. Our work offers an effective strategy for preparing the ultrathin FeTe1–xSex superconductor, which could become a promising platform for further study of the unconventional superconductivity in the FeTe1–xSex system.

KW - chemical vapor deposition

KW - FeTeSe

KW - iron-based superconductor

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Chemical Vapor Deposition of Superconducting FeTe_1-xSe_xNanosheets

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AoE(UGC)-ExtU-Lead: 2D Materials Research: Fundamentals Towards Emerging Technologies

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Chemical Vapor Deposition of Superconducting FeTe1-xSex Nanosheets

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Research Keywords

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AoE(UGC)-ExtU-Lead: 2D Materials Research: Fundamentals Towards Emerging Technologies

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Chemical Vapor Deposition of Superconducting FeTe_1-xSe_xNanosheets