کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7998110 | 1516246 | 2015 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic structure of the heavy fermion superconductor Ce2PdIn8: Experiment and calculations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electronic structure of the heavy fermion superconductor Ce2PdIn8: Experiment and calculations Electronic structure of the heavy fermion superconductor Ce2PdIn8: Experiment and calculations](/preview/png/7998110.png)
چکیده انگلیسی
The electronic structure of a heavy-fermion superconductor Ce2PdIn8 was investigated by means of X-ray photoelectron spectroscopy (XPS) and ab initio density functional band structure calculations. The Ce 3d core-level XPS spectra point to stable trivalent configuration of Ce atoms that is also reproduced in the band structure calculations within the generalized gradient approximation GGA+U approach. Analysis of the 3d9f2 weight in the 3d XPS spectra within the Gunnarsson-Schönhammer model suggests that the onsite hybridization energy between Ce 4f and the conduction band states, Îfs, is â¼120Â meV, which is about 30Â meV larger than Îfs in isostructural Ce2TIn8 compounds with TÂ =Â Co, Rh, and Ir. Taking into account a Coulomb repulsion U on both the Ce 4f and Pd 4d states in electronic band structure calculations, a satisfactory agreement was found between the calculated density of states (DOS) and the measured valence band XPS spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 647, 25 October 2015, Pages 605-611
Journal: Journal of Alloys and Compounds - Volume 647, 25 October 2015, Pages 605-611
نویسندگان
M. WerwiÅski, A. Szajek, A. Ålebarski, D. Kaczorowski,