کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1816793 | 1525271 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic phase separation in La2âxSrxCuO4+y
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We have discovered an electronically driven phase separation in super-oxygenated La2âxSrxCuO4+y, with various Sr contents. The samples have been characterized by muon spin rotation and bulk magnetization measurements. For all Sr levels with x<0.125, excess oxygen produces samples with a superconducting phase with TC near 40Â K and a separate magnetic phase, a spin density wave that also orders near 40Â K. The observed magnetic region is closely related to the anomalous, 1/8th hole doped, magnetic versions of La2CuO4, and the superconducting region is optimally doped. The two phases are likely to be the only stable ground states in this region of the phase diagram. This simple two-component system may represent the most direct observation of electronic phase separation in cuprate superconductors. Thus La2CuO4, doped with substitutional Sr and interstitial O introduces an interesting new material system for the field of high-temperature superconductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volumes 374â375, 31 March 2006, Pages 199-202
Journal: Physica B: Condensed Matter - Volumes 374â375, 31 March 2006, Pages 199-202
نویسندگان
Hashini E. Mohottala, B.O. Wells, J.I. Budnick, W.A. Hines, Ch. Niedermayer, C. Bernhard, A.R. Moodenbaugh, F.C. Chou,