Prediction of Superconductivity in Potassium-Doped Benzene

2015/01/01 by Guohua Zhong, Guo-Hua Zhong, Xiao‐Jia Chen +6
Chemistry · Engineering · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Phase Equilibria and Thermodynamics #Superconductivity (cond-mat.supr-con) #cond-mat.mtrl-sci #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.1501.00240

5 pages, 4 figures

arxiv created 2015/01/01 · openalex publication_date 2015/01/01 · arxiv updated 2015/01/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

To explore underlying mechanism for the superconducting phase in recent discovered aromatic hydrocarbons, we carry out the first-principles calculations on benzene, the basic and the simplest unit of the series and examine the structural and phase stability when doped by potassium, K_xC₆H₆ (x=1,2,3). We find that K₂C₆H₆ with the space group of Pbca is the most stable phase with superconducting transition temperature around 6.2 K. Moreover, we argue that all existing hydrocarbons should have a unified superconducting phase in the same temperature range of 5-7 K, when doped by two potassium atoms. Our results indicate that the electron-phonon interaction is enough to account for the superconductivity of this unified superconducting phase.

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