کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1820618 | 1525769 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fermi energy band dispersion and orbital symmetry of Bi2Sr2CaCu2Oy studied by non-polarized-light two-dimensional photoelectron spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To study the two-dimensional Fermi energy band dispersion of Bi2Sr2CaCu2Oy in the vicinity of the Fermi level, photoelectron intensity angular distributions (PIADs) was measured at room temperature using non-polarized He I excitation light (21.2 eV) in normal incidence geometry. Strong photoelectron peaks appeared at the M¯ points in the PIAD at the Fermi level. They are attributed to the Fermi energy band which disperses toward both the Πand Z points at higher binding energies, however, only the dispersion from the M¯ toward the Z points with increasing binding energy was observed. The disappearance of photoelectron peaks of Fermi energy band in the first Brillouin zone was explained by the transition matrix element from dx2-y2 atomic orbital to p and f final states for the case of non-polarized light at normal incidence.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 467, Issues 1â2, 1 December 2007, Pages 43-50
Journal: Physica C: Superconductivity and its Applications - Volume 467, Issues 1â2, 1 December 2007, Pages 43-50
نویسندگان
Chikako Sakai, Fumihiko Matsui, Nobuaki Takahashi, Sakura Nishino Takeda, Hiroshi Daimon,