Effect of Oxygen Concentration on Superconducting Properties of Rubidium Tungsten Bronzes RbxWOy

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Title:	Effect of Oxygen Concentration on Superconducting Properties of Rubidium Tungsten Bronzes RbxWOy
Authors:	Ling, Dah-chin
Contributors:	淡江大學物理學系
Keywords:	rubidium tungsten bronzes;oxygen concentration;superconductivity
Date:	2007-01-23
Issue Date:	2013-01-15 18:24:49 (UTC+8)
Publisher:	New York: Springer New York LLC
Abstract:	Superconducting transition temperature (T c) as a function of oxygen concentration for hexagonal rubidium tungsten bronzes Rb x WO y with 2.80 ≤ y ≤ 3.07 and x = 0.19, 0.23, and 0.27 has been systematically investigated. Three regions corresponding to T c < 2 K (denoted as superconductivity suppressed region), T c∼ 3 K (superconductivity uniform region) and T c > 3 K (superconductivity enhanced region) were identified in T c–y phase diagram for Rb0.19WO y and Rb0.23WO y . No superconductivity enhanced region was observed for Rb0.27WO y . The superconductivity suppressed region shifts toward higher oxygen content as rubidium concentration increases. The local ordering of the intercalated rubidium atoms might be responsible for the intriguing T c–y phase diagram of RbxWOy.
Relation:	Journal of Superconductivity and Novel Magnetism 20(3),　p.249-253
DOI:	10.1007/s10948-006-0186-3
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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