کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9841719 | 1525795 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Origin of superconducting carriers in “non-doped” Tâ²-(La,RE)2CuO4 (REÂ =Â Sm, Eu, Gd, Tb, Lu, and Y) prepared by molecular beam epitaxy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Origin of superconducting carriers in “non-doped” Tâ²-(La,RE)2CuO4 (REÂ =Â Sm, Eu, Gd, Tb, Lu, and Y) prepared by molecular beam epitaxy Origin of superconducting carriers in “non-doped” Tâ²-(La,RE)2CuO4 (REÂ =Â Sm, Eu, Gd, Tb, Lu, and Y) prepared by molecular beam epitaxy](/preview/png/9841719.png)
چکیده انگلیسی
We have performed a systematic investigation of the variations of the lattice constants with substituent rare-earth element concentration x in the nominally undoped superconductors Tâ²-La2-x3+REx3+CuO4 (RE = Sm, Eu, Gd, Tb, Lu, and Y), which we have recently discovered using MBE. The results show both the in-plane and out-of-plane lattice constants (a0 and c0 linearly decrease with x, whose extrapolation to x = 2 agrees well with the reported a0 and c0 values for each Tâ²-RE2CuO4. This behavior is what one would expect simply from the ionic size difference between La3+ and RE3+. The absence of the Cu-O bond stretching due to electron-doping, which is commonly observed in electron-doped Tâ² and infinite-layer superconductors, implies that electron-doping via oxygen deficiencies is, at least, not a main source of charge carriers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volumes 426â431, Part 1, 1 October 2005, Pages 220-224
Journal: Physica C: Superconductivity - Volumes 426â431, Part 1, 1 October 2005, Pages 220-224
نویسندگان
M. Noda, A. Tsukada, H. Yamamoto, M. Naito,