Investigate the Nb doping position and its relationship with bulk topological superconductivity in NbxBi2Se3 by X-ray photoelectron spectra

Jingfeng Wang; Fei Jiao; Di Zhang; Meixia Chang; Lingbo Cai; Yunlong Li; Cao Wang; Shugang Tan; Qiang Jing; Bo Liu; Dong Qian

doi:10.1016/j.jpcs.2019.109208

Investigate the Nb doping position and its relationship with bulk topological superconductivity in Nb_xBi₂Se₃ by X-ray photoelectron spectra

Jingfeng Wang, Fei Jiao, Di Zhang, Meixia Chang, Lingbo Cai, Yunlong Li, Cao Wang, Shugang Tan, Qiang Jing, Bo Liu^*, Dong Qian

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

The relationship between the doping position of Nb in Bi2Se3 and its superconductivity is investigated by XPS, magnetic measurement and transport measurement. It is found that for NbxBi2Se3, the main impurity phase comes from BiNbSe3. Superconducting volume fraction of Nb doped Bi2Se3 increases with the ratio of Nb inserted in the van der Waals layers. The van der Waals-layer-position doped Nb may lead to superconductivity in Bi2Se3. This work may stimulate further investigation on topological superconductivity mechanism of NbxBi2Se3.

Original language	English
Journal	Journal of Physics and Chemistry of Solids
Volume	137
DOIs	https://doi.org/10.1016/j.jpcs.2019.109208
Publication status	Published - 2020
Externally published	Yes

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10.1016/j.jpcs.2019.109208

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title = "Investigate the Nb doping position and its relationship with bulk topological superconductivity in NbxBi2Se3 by X-ray photoelectron spectra",

abstract = "The relationship between the doping position of Nb in Bi2Se3 and its superconductivity is investigated by XPS, magnetic measurement and transport measurement. It is found that for NbxBi2Se3, the main impurity phase comes from BiNbSe3. Superconducting volume fraction of Nb doped Bi2Se3 increases with the ratio of Nb inserted in the van der Waals layers. The van der Waals-layer-position doped Nb may lead to superconductivity in Bi2Se3. This work may stimulate further investigation on topological superconductivity mechanism of NbxBi2Se3.",

author = "Jingfeng Wang and Fei Jiao and Di Zhang and Meixia Chang and Lingbo Cai and Yunlong Li and Cao Wang and Shugang Tan and Qiang Jing and Bo Liu and Dong Qian",

year = "2020",

doi = "10.1016/j.jpcs.2019.109208",

language = "English",

volume = "137",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

}

TY - JOUR

T1 - Investigate the Nb doping position and its relationship with bulk topological superconductivity in NbxBi2Se3 by X-ray photoelectron spectra

AU - Wang, Jingfeng

AU - Jiao, Fei

AU - Zhang, Di

AU - Chang, Meixia

AU - Cai, Lingbo

AU - Li, Yunlong

AU - Wang, Cao

AU - Tan, Shugang

AU - Jing, Qiang

AU - Liu, Bo

AU - Qian, Dong

PY - 2020

Y1 - 2020

N2 - The relationship between the doping position of Nb in Bi2Se3 and its superconductivity is investigated by XPS, magnetic measurement and transport measurement. It is found that for NbxBi2Se3, the main impurity phase comes from BiNbSe3. Superconducting volume fraction of Nb doped Bi2Se3 increases with the ratio of Nb inserted in the van der Waals layers. The van der Waals-layer-position doped Nb may lead to superconductivity in Bi2Se3. This work may stimulate further investigation on topological superconductivity mechanism of NbxBi2Se3.

AB - The relationship between the doping position of Nb in Bi2Se3 and its superconductivity is investigated by XPS, magnetic measurement and transport measurement. It is found that for NbxBi2Se3, the main impurity phase comes from BiNbSe3. Superconducting volume fraction of Nb doped Bi2Se3 increases with the ratio of Nb inserted in the van der Waals layers. The van der Waals-layer-position doped Nb may lead to superconductivity in Bi2Se3. This work may stimulate further investigation on topological superconductivity mechanism of NbxBi2Se3.

U2 - 10.1016/j.jpcs.2019.109208

DO - 10.1016/j.jpcs.2019.109208

M3 - Article

SN - 0022-3697

VL - 137

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

ER -

Investigate the Nb doping position and its relationship with bulk topological superconductivity in NbxBi2Se3 by X-ray photoelectron spectra

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Investigate the Nb doping position and its relationship with bulk topological superconductivity in Nb_xBi₂Se₃ by X-ray photoelectron spectra