Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films

Abstract A reentrant temperature dependence of the normal state resistance often referred to as the N-shaped temperature dependence, is omnipresent in disordered superconductors – ranging from high-temperature cuprates to ultrathin superconducting films – that experience superconductor-to-insulator...

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Autores principales:	Svetlana V. Postolova, Alexey Yu. Mironov, Mikhail R. Baklanov, Valerii M. Vinokur, Tatyana I. Baturina
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cdf4e565aaf84792bb34cb468d954c34
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spelling	oai:doaj.org-article:cdf4e565aaf84792bb34cb468d954c342021-12-02T12:31:47ZReentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films10.1038/s41598-017-01753-w2045-2322https://doaj.org/article/cdf4e565aaf84792bb34cb468d954c342017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01753-whttps://doaj.org/toc/2045-2322Abstract A reentrant temperature dependence of the normal state resistance often referred to as the N-shaped temperature dependence, is omnipresent in disordered superconductors – ranging from high-temperature cuprates to ultrathin superconducting films – that experience superconductor-to-insulator transition. Yet, despite the ubiquity of this phenomenon its origin still remains a subject of debate. Here we investigate strongly disordered superconducting TiN films and demonstrate universality of the reentrant behavior. We offer a quantitative description of the N-shaped resistance curve. We show that upon cooling down the resistance first decreases linearly with temperature and then passes through the minimum that marks the 3D–2D crossover in the system. In the 2D temperature range the resistance first grows with decreasing temperature due to quantum contributions and eventually drops to zero as the system falls into a superconducting state. Our findings demonstrate the prime importance of disorder in dimensional crossover effects.Svetlana V. PostolovaAlexey Yu. MironovMikhail R. BaklanovValerii M. VinokurTatyana I. BaturinaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Svetlana V. Postolova Alexey Yu. Mironov Mikhail R. Baklanov Valerii M. Vinokur Tatyana I. Baturina Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films
description	Abstract A reentrant temperature dependence of the normal state resistance often referred to as the N-shaped temperature dependence, is omnipresent in disordered superconductors – ranging from high-temperature cuprates to ultrathin superconducting films – that experience superconductor-to-insulator transition. Yet, despite the ubiquity of this phenomenon its origin still remains a subject of debate. Here we investigate strongly disordered superconducting TiN films and demonstrate universality of the reentrant behavior. We offer a quantitative description of the N-shaped resistance curve. We show that upon cooling down the resistance first decreases linearly with temperature and then passes through the minimum that marks the 3D–2D crossover in the system. In the 2D temperature range the resistance first grows with decreasing temperature due to quantum contributions and eventually drops to zero as the system falls into a superconducting state. Our findings demonstrate the prime importance of disorder in dimensional crossover effects.
format	article
author	Svetlana V. Postolova Alexey Yu. Mironov Mikhail R. Baklanov Valerii M. Vinokur Tatyana I. Baturina
author_facet	Svetlana V. Postolova Alexey Yu. Mironov Mikhail R. Baklanov Valerii M. Vinokur Tatyana I. Baturina
author_sort	Svetlana V. Postolova
title	Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films
title_short	Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films
title_full	Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films
title_fullStr	Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films
title_full_unstemmed	Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films
title_sort	reentrant resistive behavior and dimensional crossover in disordered superconducting tin films
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/cdf4e565aaf84792bb34cb468d954c34
work_keys_str_mv	AT svetlanavpostolova reentrantresistivebehavioranddimensionalcrossoverindisorderedsuperconductingtinfilms AT alexeyyumironov reentrantresistivebehavioranddimensionalcrossoverindisorderedsuperconductingtinfilms AT mikhailrbaklanov reentrantresistivebehavioranddimensionalcrossoverindisorderedsuperconductingtinfilms AT valeriimvinokur reentrantresistivebehavioranddimensionalcrossoverindisorderedsuperconductingtinfilms AT tatyanaibaturina reentrantresistivebehavioranddimensionalcrossoverindisorderedsuperconductingtinfilms
_version_	1718394306174124032

Reentrant Resistive Behavior and Dimensional Crossover in Disordered Superconducting TiN Films

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