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Bosonic Confinement and Coherence in Disordered Nanodiamond Arrays.
Zhang, Gufei; Samuely, Tomas; Du, Hongchu; Xu, Zheng; Liu, Liwang; Onufriienko, Oleksandr; May, Paul W; Vanacken, Johan; Szabó, Pavol; Kacmarcík, Jozef; Yuan, Haifeng; Samuely, Peter; Dunin-Borkowski, Rafal E; Hofkens, Johan; Moshchalkov, Victor V.
Afiliação
  • Zhang G; INPAC-Insititute for Nanoscale Physics and Chemistry, KU Leuven , Celestijnenlaan 200D, B-3001 Heverlee, Belgium.
  • Samuely T; Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, and Faculty of Science, P. J. Safarik University , 04001 Kosice, Slovakia.
  • Du H; Ernst Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH , Jülich 52425, Germany.
  • Xu Z; Central Facility for Electron Microscopy, RWTH Aachen University , Aachen 52074, Germany.
  • Liu L; School of Electrical and Computer Engineering, University of California , Davis, California 95616, United States.
  • Onufriienko O; University of Bordeaux, CNRS, UMR 5295, I2M , F-33400 Talence, France.
  • May PW; Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, and Faculty of Science, P. J. Safarik University , 04001 Kosice, Slovakia.
  • Vanacken J; School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom.
  • Szabó P; INPAC-Insititute for Nanoscale Physics and Chemistry, KU Leuven , Celestijnenlaan 200D, B-3001 Heverlee, Belgium.
  • Kacmarcík J; Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, and Faculty of Science, P. J. Safarik University , 04001 Kosice, Slovakia.
  • Yuan H; Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, and Faculty of Science, P. J. Safarik University , 04001 Kosice, Slovakia.
  • Samuely P; Department of Chemistry, KU Leuven , Celestijnenlaan 200F, B-3001 Heverlee, Belgium.
  • Dunin-Borkowski RE; Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, and Faculty of Science, P. J. Safarik University , 04001 Kosice, Slovakia.
  • Hofkens J; Ernst Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH , Jülich 52425, Germany.
  • Moshchalkov VV; Peter Grünberg Institute, Forschungszentrum Jülich GmbH , 52425 Jülich, Germany.
ACS Nano ; 11(11): 11746-11754, 2017 11 28.
Article em En | MEDLINE | ID: mdl-29125286
ABSTRACT
In the presence of disorder, superconductivity exhibits short-range characteristics linked to localized Cooper pairs which are responsible for anomalous phase transitions and the emergence of quantum states such as the bosonic insulating state. Complementary to well-studied homogeneously disordered superconductors, superconductor-normal hybrid arrays provide tunable realizations of the degree of granular disorder for studying anomalous quantum phase transitions. Here, we investigate the superconductor-bosonic dirty metal transition in disordered nanodiamond arrays as a function of the dispersion of intergrain spacing, which ranges from angstroms to micrometers. By monitoring the evolved superconducting gaps and diminished coherence peaks in the single-quasiparticle density of states, we link the destruction of the superconducting state and the emergence of bosonic dirty metallic state to breaking of the global phase coherence and persistence of the localized Cooper pairs. The observed resistive bosonic phase transitions are well modeled using a series-parallel circuit in the framework of bosonic confinement and coherence.
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Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2017 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2017 Tipo de documento: Article