Possible microscopic doping mechanism in Tl-2201
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چکیده
منابع مشابه
ar X iv : 0 90 9 . 33 58 v 1 [ co nd - m at . s up r - co n ] 1 8 Se p 20 09 Possible Microscopic Doping Mechanism in Tl - 2201
X-ray absorption spectroscopy on oxygen-annealed, self-flux-grown single crystals of Tl2Ba2CuO6+δ suggests a microscopic doping mechanism whereby interstitial oxygens are attracted to copper substituted on the thallium site, contributing holes to both the planes and to these coppers, and typically promoting only one hole to the plane rather than two. These copper substituents would provide an i...
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Microstructures of Tl 2 Ba 2 CuO 6 (Tl-2201) thin ®lms with dierent doping levels grown on SrTiO 3 substrates were studied by transmission electron microscopy. It is found that Tl-2201 ®lms are epitaxial single phase over large area. A new three-dimensional modulation structure was observed for the heavily overdoped ®lms. With decrease of doping level from heavily overdoped to optimally doped,...
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ژورنال
عنوان ژورنال: Physica C: Superconductivity and its Applications
سال: 2010
ISSN: 0921-4534
DOI: 10.1016/j.physc.2009.10.056