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		<doi>10.1016/j.physb.2017.09.086</doi>
		<issn>0921-4526</issn>
		<citationkey>Granato:2018:BoFlEf</citationkey>
		<title>Bond and flux-disorder effects on the superconductor-insulator transition of a honeycomb array of Josephson junctions</title>
		<year>2018</year>
		<month>may</month>
		<typeofwork>journal article</typeofwork>
		<secondarytype>PRE PI</secondarytype>
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		<size>651 KiB</size>
		<author>Granato, Enzo,</author>
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		<group>LABAS-COCTE-INPE-MCTIC-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>enzo.granato@inpe.br</electronicmailaddress>
		<journal>Physica B: Condensed Matter</journal>
		<volume>536</volume>
		<pages>442-446</pages>
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		<contenttype>External Contribution</contenttype>
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		<keywords>Superconductor-insulator transition, Josephson-junction arrays, Granular superconductors.</keywords>
		<abstract>We study the effects of disorder on the zero-temperature quantum phase transition of a honeycomb array of Josephson junctions in a magnetic field with an average of  flux quantum per plaquette. Bond disorder due to spatial variations in the Josephson couplings and magnetic flux disorder due to variations in the plaquette areas are considered. The model can describe the superconductor-insulator transition in ultra-thin films with a triangular pattern of nanoholes. Path integral Monte Carlo simulations of the equivalent (2 + 1)-dimensional classical model are used to study the critical behavior and estimate the universal resistivity at the transition. The results show that bond disorder leads to a rounding of the first-order phase transition for  to a continuous transition. For integer , the decrease of the critical coupling parameter with flux disorder is significantly different from that of the same model defined on a square lattice. The results are compared with recent experimental observations on nanohole thin films with geometrical disorder and external magnetic field.</abstract>
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		<language>en</language>
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