Continuously Doping BiM2Sr2CaCu2O8+ δ into Electron-Doped Superconductor by CaH2Annealing Method

Jin Zhao; Yu Lin Gan; Guang Yang; Yi Gui Zhong; Cen Yao Tang; Fa Zhi Yang; Giao Ngoc Phan; Qiang Tao Sui; Zhong Liu; Gang Li; Xiang Gang Qiu; Qing Hua Zhang; Jie Shen; Tian Qian; Li Lu; Lei Yan; Gen Da Gu; Hong Ding

doi:10.1088/0256-307X/39/7/077403

Continuously Doping BiM₂Sr₂CaCu₂O_{8+ δ}into Electron-Doped Superconductor by CaH₂Annealing Method

Jin Zhao, Yu Lin Gan, Guang Yang, Yi Gui Zhong, Cen Yao Tang, Fa Zhi Yang, Giao Ngoc Phan, Qiang Tao Sui, Zhong Liu, Gang Li, Xiang Gang Qiu, Qing Hua Zhang, Jie Shen, Tian Qian, Li Lu, Lei Yan, Gen Da Gu, Hong Ding

Quantum Heterostructures

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

3 Scopus citations

Abstract

As a typical hole-doped cuprate superconductor, Bi2Sr2CaCu2O8 + δ (Bi2212) carrier doping is mostly determined by its oxygen content. Traditional doping methods can regulate its doping level within the range of hole doping. Here we report the first application of CaH2 annealing method in regulating the doping level of Bi2212. By continuously controlling the anneal time, a series of differently doped samples can be obtained. The combined experimental results of x-ray diffraction, scanning transmission electron microscopy, resistance and Hall measurements demonstrate that the CaH2 induced topochemical reaction can effectively change the oxygen content of Bi2212 within a very wide range, even switching from hole doping to electron doping. We also found evidence of a low-T c superconducting phase in the electron doping side.

Original language	English
Article number	077403
Journal	Chinese Physics Letters
Volume	39
Issue number	7
DOIs	https://doi.org/10.1088/0256-307X/39/7/077403
State	Published - Jul 1 2022

Funding

We thank Xing-Chen Guo, Zhe Zheng, Feng Ran and Ren-Jie Zhang for technical support, and Zheng-Yu Weng, Fu-Chun Zhang and Tao Xiang for helpful discussions. This work was supported by the National Natural Science Foundation of China (Grant Nos. 11888101 and U1832202), the Chinese Academy of Sciences (Grant Nos. QYZDB-SSW-SLH043 and XDB33000000), the K. C. Wong Education Foundation (Grant No. GJTD-2018-01), and the Informatization Plan of Chinese Academy of Sciences (Grant No. CAS-WX2021SF-0102). This work was also supported by the Synergetic Extreme Condition User Facility (SECUF). Y.L.G. was supported by China Postdoctoral Science Foundation (Grant Nos. 2020M680726 and YJ20200325). G.D.G. was supported by US DOE (Grant Nos. DE-SC0010526 and DE-SC0012704).

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Zhao, J., Gan, Y. L., Yang, G., Zhong, Y. G., Tang, C. Y., Yang, F. Z., Phan, G. N., Sui, Q. T., Liu, Z., Li, G., Qiu, X. G., Zhang, Q. H., Shen, J., Qian, T., Lu, L., Yan, L., Gu, G. D., & Ding, H. (2022). Continuously Doping BiM₂Sr₂CaCu₂O_{8+ δ}into Electron-Doped Superconductor by CaH₂Annealing Method. Chinese Physics Letters, 39(7), Article 077403. https://doi.org/10.1088/0256-307X/39/7/077403

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title = "Continuously Doping BiM2Sr2CaCu2O8+ δ into Electron-Doped Superconductor by CaH2Annealing Method",

abstract = "As a typical hole-doped cuprate superconductor, Bi2Sr2CaCu2O8 + δ (Bi2212) carrier doping is mostly determined by its oxygen content. Traditional doping methods can regulate its doping level within the range of hole doping. Here we report the first application of CaH2 annealing method in regulating the doping level of Bi2212. By continuously controlling the anneal time, a series of differently doped samples can be obtained. The combined experimental results of x-ray diffraction, scanning transmission electron microscopy, resistance and Hall measurements demonstrate that the CaH2 induced topochemical reaction can effectively change the oxygen content of Bi2212 within a very wide range, even switching from hole doping to electron doping. We also found evidence of a low-T c superconducting phase in the electron doping side.",

author = "Jin Zhao and Gan, {Yu Lin} and Guang Yang and Zhong, {Yi Gui} and Tang, {Cen Yao} and Yang, {Fa Zhi} and Phan, {Giao Ngoc} and Sui, {Qiang Tao} and Zhong Liu and Gang Li and Qiu, {Xiang Gang} and Zhang, {Qing Hua} and Jie Shen and Tian Qian and Li Lu and Lei Yan and Gu, {Gen Da} and Hong Ding",

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T1 - Continuously Doping BiM2Sr2CaCu2O8+ δ into Electron-Doped Superconductor by CaH2Annealing Method

AU - Zhao, Jin

AU - Gan, Yu Lin

AU - Yang, Guang

AU - Zhong, Yi Gui

AU - Tang, Cen Yao

AU - Yang, Fa Zhi

AU - Phan, Giao Ngoc

AU - Sui, Qiang Tao

AU - Liu, Zhong

AU - Li, Gang

AU - Qiu, Xiang Gang

AU - Zhang, Qing Hua

AU - Shen, Jie

AU - Qian, Tian

AU - Lu, Li

AU - Yan, Lei

AU - Gu, Gen Da

AU - Ding, Hong

PY - 2022/7/1

Y1 - 2022/7/1

N2 - As a typical hole-doped cuprate superconductor, Bi2Sr2CaCu2O8 + δ (Bi2212) carrier doping is mostly determined by its oxygen content. Traditional doping methods can regulate its doping level within the range of hole doping. Here we report the first application of CaH2 annealing method in regulating the doping level of Bi2212. By continuously controlling the anneal time, a series of differently doped samples can be obtained. The combined experimental results of x-ray diffraction, scanning transmission electron microscopy, resistance and Hall measurements demonstrate that the CaH2 induced topochemical reaction can effectively change the oxygen content of Bi2212 within a very wide range, even switching from hole doping to electron doping. We also found evidence of a low-T c superconducting phase in the electron doping side.

AB - As a typical hole-doped cuprate superconductor, Bi2Sr2CaCu2O8 + δ (Bi2212) carrier doping is mostly determined by its oxygen content. Traditional doping methods can regulate its doping level within the range of hole doping. Here we report the first application of CaH2 annealing method in regulating the doping level of Bi2212. By continuously controlling the anneal time, a series of differently doped samples can be obtained. The combined experimental results of x-ray diffraction, scanning transmission electron microscopy, resistance and Hall measurements demonstrate that the CaH2 induced topochemical reaction can effectively change the oxygen content of Bi2212 within a very wide range, even switching from hole doping to electron doping. We also found evidence of a low-T c superconducting phase in the electron doping side.

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Continuously Doping BiM₂Sr₂CaCu₂O_{8+ δ}into Electron-Doped Superconductor by CaH₂Annealing Method

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