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	Magnetic transitions in K-doped biphenyl and p-terphenyl
	Guo-Hua Zhong; Chao Zhang; Xiao-Jia Chen; Hai-Qing Lin
	2018
会议日期	2018
会议地点	美国
英文摘要	Recently, the superconductivity in K-doped p-terphenyl was reported with the transition temperatures range from 7 to 123 Kelvin, which attracts much attention. In this work, to investigated the possible magnetism and the transition between magnetism and superconductivity, we have studied the magnetism of K-doped biphenyl and p-terphenyl by combining the first-principles calculations with magnetization measurements. We found that the tilting between two successive benzene rings drives the antiferromagnetic spin ordering of electrons transferred to C atoms from K atoms at the low doping concentration. With the increase of charge transferring, the spin ordering disappears in systems while the superconductivity occurs. Namely, the transition from antiferromagnetic to superconducting behavior occurs with the increase of K doping contents. In fabricated K-doped biphenyl sample, the magnetic susceptibility measurement confirmed the existence of AFM characteristics, which is in good agreement with theoretical predictions. For K-doped p-terphenyl, more experimental observations is needed. Our results is helpful for understanding the superconducting transition in this kind of materials.
URL标识	查看原文
内容类型	会议论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/13699]
专题	深圳先进技术研究院_集成所
推荐引用方式 GB/T 7714	Guo-Hua Zhong,Chao Zhang,Xiao-Jia Chen,et al. Magnetic transitions in K-doped biphenyl and p-terphenyl[C]. 见:. 美国. 2018.

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