铕钌氧化物Sr2RuO4-Ru中Ru包裹体涡旋态的形核
Nucleation of Vortex State in Ru-inclusion in Eutectic Ruthenium Oxide Sr2RuO4-Ru
摘要：
Sr_2RuO_4-Ru的Eu_2O_3样品中含有许多微米级的Ru金属夹杂物。基于Ginzburg-Landau公式，我们分析了圆柱形夹杂物中Sr 2 RuO 4（Tc = 1.5 K）的手征p波态和Ru金属（Tc，Ru = 0.5 K）的s波态之间的相互作用.由于序参量相的失配，当T < Tc，Ru时，在Sr_2 RuO_4-Ru界面上出现了自发磁通分布，并演化为“约瑟夫森涡旋”。在足够低的温度下，可以发生脱钉过渡，由此涡流移动到圆柱体的中心。
英文摘要：
Eutectic samples of Sr2RuO4-Ru possess many micrometer-sized Ru-metal inclusions. Based on a Ginzburg-Landau formulation we analyze the interplay of the chiral p-wave state of Sr2RuO4 (Tc = 1.5 K) and the s-wave state of Ru metal (Tc,Ru = 0.5 K) for an inclusion of cylindrical geometry. As a consequence of the mismatch of the order parameter phase, the occurrence of a spontaneous flux distribution appears for T < Tc,Ru which evolves into a "Josephson vortex" on the Sr2RuO4-Ru interface. At a sufficiently low temperature a depinning transition can occur whereby the vortex moves to the center of the cylinder.
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