Abstract
Cooper pair shape is not so simple in inhomogeneous superconducting systems. It is shown that pairing function in a normal metal is surprisingly anisotropic because of quasiparticle interference. We calculate angle resolved quasiparticle local density of states in NS bilayers which reflects such anisotropic shape of the pairing function. This unusual feature can be detected by a magneto-tunneling spectroscopy experiment.
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