Influence of strong disorder on superconductivity of MgB2 thin films

We investigated the influence of disorder on superconductivity of MgB2 films, prepared in a single deposition run onto two different substrates: (100)-MgO and on (128° rot)-LiNbO3 with trigonal crystal structure which does not match to the MgB2 structure. As expected, the microstructure of both...

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Autores principales:	Koch, Thomas, Zdravkov, I., Surdu, Andrei, Condrea, Elena, Socrovişciuc, Alexei, Sidorenko, Anatolie, Rossolenko, A, Ryazanov, V, Straumal, B, Tidecks, Reinhard, Wixforth, Achim
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2008
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/ab44891fd5624361b44ad775706f6f8a
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spelling	oai:doaj.org-article:ab44891fd5624361b44ad775706f6f8a2021-11-21T12:07:02ZInfluence of strong disorder on superconductivity of MgB2 thin films2537-63651810-648Xhttps://doaj.org/article/ab44891fd5624361b44ad775706f6f8a2008-04-01T00:00:00Zhttps://mjps.nanotech.md/archive/2008/article/3797https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365We investigated the influence of disorder on superconductivity of MgB2 films, prepared in a single deposition run onto two different substrates: (100)-MgO and on (128° rot)-LiNbO3 with trigonal crystal structure which does not match to the MgB2 structure. As expected, the microstructure of both films crucially differs. The REM study shows a very homogeneous, smooth morphology of the MgB2 film on MgO, but a very rough inhomogeneous film structure on LiNbO3. Although the MgB2 film on LiNbO3 is strongly disordered, its critical temperature Tc=33.5 K is practically the same as for the film deposited on MgO. Possible reasons of such unusual Tc behavior are discussed. Koch, ThomasZdravkov, I.Surdu, AndreiCondrea, ElenaSocrovişciuc, AlexeiSidorenko, AnatolieRossolenko, ARyazanov, VStraumal, BTidecks, ReinhardWixforth, AchimD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 7, Iss 2, Pp 164-167 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Koch, Thomas Zdravkov, I. Surdu, Andrei Condrea, Elena Socrovişciuc, Alexei Sidorenko, Anatolie Rossolenko, A Ryazanov, V Straumal, B Tidecks, Reinhard Wixforth, Achim Influence of strong disorder on superconductivity of MgB2 thin films
description	We investigated the influence of disorder on superconductivity of MgB2 films, prepared in a single deposition run onto two different substrates: (100)-MgO and on (128° rot)-LiNbO3 with trigonal crystal structure which does not match to the MgB2 structure. As expected, the microstructure of both films crucially differs. The REM study shows a very homogeneous, smooth morphology of the MgB2 film on MgO, but a very rough inhomogeneous film structure on LiNbO3. Although the MgB2 film on LiNbO3 is strongly disordered, its critical temperature Tc=33.5 K is practically the same as for the film deposited on MgO. Possible reasons of such unusual Tc behavior are discussed.
format	article
author	Koch, Thomas Zdravkov, I. Surdu, Andrei Condrea, Elena Socrovişciuc, Alexei Sidorenko, Anatolie Rossolenko, A Ryazanov, V Straumal, B Tidecks, Reinhard Wixforth, Achim
author_facet	Koch, Thomas Zdravkov, I. Surdu, Andrei Condrea, Elena Socrovişciuc, Alexei Sidorenko, Anatolie Rossolenko, A Ryazanov, V Straumal, B Tidecks, Reinhard Wixforth, Achim
author_sort	Koch, Thomas
title	Influence of strong disorder on superconductivity of MgB2 thin films
title_short	Influence of strong disorder on superconductivity of MgB2 thin films
title_full	Influence of strong disorder on superconductivity of MgB2 thin films
title_fullStr	Influence of strong disorder on superconductivity of MgB2 thin films
title_full_unstemmed	Influence of strong disorder on superconductivity of MgB2 thin films
title_sort	influence of strong disorder on superconductivity of mgb2 thin films
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2008
url	https://doaj.org/article/ab44891fd5624361b44ad775706f6f8a
work_keys_str_mv	AT kochthomas influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT zdravkovi influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT surduandrei influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT condreaelena influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT socrovisciucalexei influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT sidorenkoanatolie influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT rossolenkoa influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT ryazanovv influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT straumalb influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT tidecksreinhard influenceofstrongdisorderonsuperconductivityofmgb2thinfilms AT wixforthachim influenceofstrongdisorderonsuperconductivityofmgb2thinfilms
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Influence of strong disorder on superconductivity of MgB2 thin films

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