气候变化领域集成服务门户(CCPortal): Observation of thickness-tuned universality class in superconducting β-W thin films

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DOI	10.1016/j.scib.2021.05.023
	Observation of thickness-tuned universality class in superconducting β-W thin films
	Huang C.; Zhang E.; Zhang Y.; Zhang J.; Xiu F.; Liu H.; Xie X.; Ai L.; Yang Y.; Zhao M.; Qi J.; Li L.; Liu S.; Li Z.; Zhan R.; Bie Y.-Q.; Kou X.; Deng S.; Xie X.C.
发表日期	2021
ISSN	20959273
英文摘要	The interplay between quenched disorder and critical behavior in quantum phase transitions is conceptually fascinating and of fundamental importance for understanding phase transitions. However, it is still unclear whether or not the quenched disorder influences the universality class of quantum phase transitions. More crucially, the absence of superconducting-metal transitions under in-plane magnetic fields in 2D superconductors imposes constraints on the universality of quantum criticality. Here, we observe the thickness-tuned universality class of superconductor-metal transition by changing the disorder strength in β-W films with varying thickness. The finite-size scaling uncovers the switch of universality class: quantum Griffiths singularity to multiple quantum criticality at a critical thickness of tc⊥1~8nm and then from multiple quantum criticality to single criticality at tc⊥2~16nm. Moreover, the superconducting-metal transition is observed for the first time under in-plane magnetic fields and the universality class is changed at tc‖~8nm. The observation of thickness-tuned universality class under both out-of-plane and in-plane magnetic fields provides broad information for the disorder effect on superconducting-metal transitions and quantum criticality. © 2020 Science China Press
关键词	Quantum criticality quantum Griffiths singularity Quenched disorder Universality class
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207430
作者单位	State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, 200433, China; Zhangjiang Fudan International Innovation Center, Fudan University, Shanghai, 201210, China; School of Information Science and Technology, ShanghaiTech University, Shanghai, 201210, China; Anhui Province Key Laboratory of Condensed Matter Physics at ExtremeConditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031, China; Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, China; Shanghai Research Center for Quantum Sciences, Shanghai, 201315, China; Center for Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing, 100875, China; Beijing Academy of Quantum Information Sciences, Beijing, 100193, China; State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangz...
推荐引用方式 GB/T 7714	Huang C.,Zhang E.,Zhang Y.,et al. Observation of thickness-tuned universality class in superconducting β-W thin films[J],2021.
APA	Huang C..,Zhang E..,Zhang Y..,Zhang J..,Xiu F..,...&Xie X.C..(2021).Observation of thickness-tuned universality class in superconducting β-W thin films.Science Bulletin.
MLA	Huang C.,et al."Observation of thickness-tuned universality class in superconducting β-W thin films".Science Bulletin (2021).