Local versus Global Superconductivity in Atomic Layer Indium on Si(111)
ORAL
Abstract
Superconductivity at the two dimensional limit has attracted intense interest, and monolayer Indium on Si(111) provides a perfect platform for investigating this fascinating phenomenon. To better understand the role of defects in superconductivity, we studied superconducting monolayer Indium films by tailoring the step density of the substrate. We probed the superconductivity microscopically using scanning tunneling microscopy and spectroscopy. The macroscopic superconducting properties of the same sample were also probed using in-situ double coil mutual inductance measurements to determine the superfluid density and the transition temperature (Tc). By establishing local and global Tc correspondence, we uncover the intriguing nature of 2D superconductivity in indium atomic layer superconductors.
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Presenters
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Mengke Liu
University of Texas at Austin
Authors
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Mengke Liu
University of Texas at Austin
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Hyoungdo Nam
University of Texas at Austin
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Jungdae Kim
University of Texas at Austin, Department of Physics,BRL, and EHSRC, University of Ulsan, Ulsan 44610, Korea (the Republic of), Physics, Ulsan University, Korea
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Chih-Kang Shih
Department of Physics, The University of Texas at Austin, Austin, Texas, 78712, USA., University of Texas at Austin, Physics, University of Texas at Austin, Department of Physics, University of Texas at Austin, TX 78712, United States, Department of Physics, The University of Texas at Austin, Department of Physics, The University of Texas at Austin, USA