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Superconductivity of bilayer phosphorene under interlayer compression |
| Gui-Qin Huang(黄桂芹)1 and Zhong-Wen Xing(邢钟文)2 |
1. Department of Physics, Nanjing Normal University, Nanjing 210023, China;
2. National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China |
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Abstract According to first-principles calculations, it is our prediction that bilayer phosphorene (BLP) will become a quasi-two-dimensional superconductor under a certain degree of interlayer compression. A decreasing interlayer distance may realize the transition in the BLP from a semiconducting phase to a metallic phase. On the other hand, a severe vertical compression may make the BLP lattice become dynamically unstable. It is found that in the stable metallic phase of the BLP, interlayer phonon modes dominate the electron-phonon coupling λ. The obtained λ can be greater than 1 and the superconducting temperature Tc can be higher than 10 K.
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Received: 14 September 2015
Revised: 29 October 2015
Accepted manuscript online:
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PACS:
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74.78.-w
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(Superconducting films and low-dimensional structures)
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71.30.+h
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(Metal-insulator transitions and other electronic transitions)
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74.62.Fj
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(Effects of pressure)
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63.20.kd
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(Phonon-electron interactions)
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| Fund: Project supported by the State Key Program for Basic Researches of China (Grant No. 2014CB921103) and the Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20141441 and BK2010012). |
Corresponding Authors:
Zhong-Wen Xing
E-mail: zwxing@nju.edu.cn
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Cite this article:
Gui-Qin Huang(黄桂芹) and Zhong-Wen Xing(邢钟文) Superconductivity of bilayer phosphorene under interlayer compression 2016 Chin. Phys. B 25 027402
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