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Observation of Half-Height Magnetization Steps in Sr2RuO4
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Observation of Half-Height Magnetization Steps in Sr2RuO4
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Observation of Half-Height Magnetization Steps in Sr2RuO4
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Journal Article
Observation of Half-Height Magnetization Steps in Sr2RuO4
2011
Overview
Spin-triplet superfluids can support exotic objects, such as half-quantum vortices characterized by the nontrivial winding of the spin structure. We present cantilever magnetometry measurements performed on mesoscopic samples of Sr(2)RuO(4), a spin-triplet superconductor. With micrometer-sized annular-shaped samples, we observed transitions between integer fluxoid states as well as a regime characterized by \"half-integer transitions\"--steps in the magnetization with half the height of the ones we observed between integer fluxoid states. These half-height steps are consistent with the existence of half-quantum vortices in superconducting Sr(2)RuO(4).
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
Condensed matter: electronic structure, electrical, magnetic, and optical properties
/ Exact sciences and technology
/ Fluids
/ Integers
/ Mesoscopic and nanoscale systems
/ Numbers
/ Physics
/ Properties of type I and type II superconductors
/ Superconducting films and low-dimensional structures
/ Vortex lattices ,flux pinning, flux creep
/ Vortices
/ Winding
