Nucleation of Vortex State in Ru-Inclusion in Eutectic Ruthenium Oxide Sr2RuO4–Ru
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概要
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Eutectic samples of Sr2RuO4–Ru possess many μm-sized Ru–metal inclusions. Based on a Ginzburg–Landau formulation we analyze the interplay of the chiral $ p$-wave state of Sr2RuO4 ($T_{\text{c}} = 1.5K$) and the s-wave state of Ru metal ($T_{\text{c,Ru}} = 0.5K$) 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 $T < T_{\text{c,Ru}}$ 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.
- 2010-05-15
著者
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Sigrist Manfred
Theoretische Physik
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Kaneyasu Hirono
Department Of Material Science University Of Hyogo
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Sigrist Manfred
Theoretische Physik, ETH-Zürich, Zürich CH-8093, Switzerland
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