1 Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou 621908, China; 2 Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
Abstract The hybridization between the localized 4f level (f) with conduction (c) electrons in -Ce upon cooling has been previously revealed in single crystalline thin films experimentally and theoretically, whereas its influence on the phase transition was not explicitly verified, due to the fact that the phase transition happened in the bulk-layer, leaving the surface in the phase. Here in our work, we circumvent this issue by investigating the effect of alloying addition of La on Ce, by means of crystal structure, electronic transport and angle resolved photoemission spectroscopy measurements, together with a phenomenological periodic Anderson model and a modified Anderson impurity model. Our current researches indicate that the weakening of f-c hybridization is the major factor in the suppression of phase transition by La doping. The consistency of our results with the effects of other rare earth and actinide alloying additions on the phase transition of Ce is also discussed. Our work demonstrates the importance of the interaction between f and c electrons in understanding the unconventional phase transition in Ce, which is intuitive for further researches on other rare earth and actinide metals and alloys with similar phase transition behaviors.
(Methods of deposition of films and coatings; film growth and epitaxy)
Fund: Project supported by the National Key Research and Development Program of China (Grant Nos. 2021YFA1601100 and 2017YFA0303104), the SPC-Lab Research Fund (Grant No. WDZC201901), the Science Challenge Project (Grant Nos. TZ2016004 and TZ2018002), the National Natural Science Foundation of China (Grant Nos. U1630248, 11774320, and 11904334), Special Funds of Institute of Materials (Grant No. TP02201904), and the Development Funds (Grant No. JZX7Y201901SY00900107).
Corresponding Authors:
Xie-Gang Zhu, Hai-Feng Song, Xin-Chun Lai
E-mail: zhuxiegang@caep.cn;song_haifeng@iapcm.ac.cn;laixinchun@caep.cn
Cite this article:
Yong-Huan Wang(王永欢), Yun Zhang(张云), Yu Liu(刘瑜), Xiao Tan(谈笑), Ce Ma(马策), Yue-Chao Wang(王越超), Qiang Zhang(张强), Deng-Peng Yuan(袁登鹏), Dan Jian(简单), Jian Wu(吴健), Chao Lai(赖超), Xi-Yang Wang(王西洋), Xue-Bing Luo(罗学兵), Qiu-Yun Chen(陈秋云), Wei Feng(冯卫), Qin Liu(刘琴), Qun-Qing Hao(郝群庆), Yi Liu(刘毅), Shi-Yong Tan(谭世勇), Xie-Gang Zhu(朱燮刚), Hai-Feng Song(宋海峰), and Xin-Chun Lai(赖新春) Effect of f-c hybridization on the phase transition of cerium studied by lanthanum doping 2022 Chin. Phys. B 31 087102
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Strain compensated type II superlattices grown by molecular beam epitaxy Chao Ning(宁超), Tian Yu(于天), Rui-Xuan Sun(孙瑞轩), Shu-Man Liu(刘舒曼), Xiao-Ling Ye(叶小玲), Ning Zhuo(卓宁), Li-Jun Wang(王利军), Jun-Qi Liu(刘俊岐), Jin-Chuan Zhang(张锦川), Shen-Qiang Zhai(翟慎强), and Feng-Qi Liu(刘峰奇). Chin. Phys. B, 2023, 32(4): 046802.
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