Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal

Abstract The impact of hydrostatic pressure (P) up to 1 GPa on T c , J c and the nature of the pinning mechanism in FexNbSe2 single crystals have been investigated within the framework of the collective theory. We found that the pressure can induce a transition from the regime where pinning is contr...

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Autores principales:	Manikandan Krishnan, Rukshana Pervin, Kalai Selvan Ganesan, Kannan Murugesan, Govindaraj Lingannan, Akshay Kumar Verma, Parasharam M. Shirage, Arumugam Sonachalam
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/44d32c0f24c34e74860c5da84efacb09
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spelling	oai:doaj.org-article:44d32c0f24c34e74860c5da84efacb092021-12-02T15:09:09ZPressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal10.1038/s41598-018-19636-z2045-2322https://doaj.org/article/44d32c0f24c34e74860c5da84efacb092018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-19636-zhttps://doaj.org/toc/2045-2322Abstract The impact of hydrostatic pressure (P) up to 1 GPa on T c , J c and the nature of the pinning mechanism in FexNbSe2 single crystals have been investigated within the framework of the collective theory. We found that the pressure can induce a transition from the regime where pinning is controlled by spatial variation in the critical transition temperature (δT c ) to the regime controlled by spatial variation in the mean free path (δℓ). Furthermore, T c and low field J c are slightly induced, although the J c drops more rapidly at high fields than at ambient P. The pressure effect enhances the anisotropy and reduces the coherence length, resulting in weak interaction of the vortex cores with the pinning centers. Moreover, the P can induce the density of states, which, in turn, leads to enhance in T c with increasing P. P enhances the T c with the rates of dT c /dP of 0.86, 1.35 and 1.47 K/GPa for FexNbSe2, respectively. The magnetization data are used to establish a vortex phase diagram. The nature of the vortices has been determined from the scaling behaviour of the pinning force density extracted from the J c –H isotherms and demonstrates the point pinning mechanism.Manikandan KrishnanRukshana PervinKalai Selvan GanesanKannan MurugesanGovindaraj LingannanAkshay Kumar VermaParasharam M. ShirageArumugam SonachalamNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Manikandan Krishnan Rukshana Pervin Kalai Selvan Ganesan Kannan Murugesan Govindaraj Lingannan Akshay Kumar Verma Parasharam M. Shirage Arumugam Sonachalam Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal
description	Abstract The impact of hydrostatic pressure (P) up to 1 GPa on T c , J c and the nature of the pinning mechanism in FexNbSe2 single crystals have been investigated within the framework of the collective theory. We found that the pressure can induce a transition from the regime where pinning is controlled by spatial variation in the critical transition temperature (δT c ) to the regime controlled by spatial variation in the mean free path (δℓ). Furthermore, T c and low field J c are slightly induced, although the J c drops more rapidly at high fields than at ambient P. The pressure effect enhances the anisotropy and reduces the coherence length, resulting in weak interaction of the vortex cores with the pinning centers. Moreover, the P can induce the density of states, which, in turn, leads to enhance in T c with increasing P. P enhances the T c with the rates of dT c /dP of 0.86, 1.35 and 1.47 K/GPa for FexNbSe2, respectively. The magnetization data are used to establish a vortex phase diagram. The nature of the vortices has been determined from the scaling behaviour of the pinning force density extracted from the J c –H isotherms and demonstrates the point pinning mechanism.
format	article
author	Manikandan Krishnan Rukshana Pervin Kalai Selvan Ganesan Kannan Murugesan Govindaraj Lingannan Akshay Kumar Verma Parasharam M. Shirage Arumugam Sonachalam
author_facet	Manikandan Krishnan Rukshana Pervin Kalai Selvan Ganesan Kannan Murugesan Govindaraj Lingannan Akshay Kumar Verma Parasharam M. Shirage Arumugam Sonachalam
author_sort	Manikandan Krishnan
title	Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal
title_short	Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal
title_full	Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal
title_fullStr	Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal
title_full_unstemmed	Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal
title_sort	pressure assisted enhancement in superconducting properties of fe substituted nbse2 single crystal
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/44d32c0f24c34e74860c5da84efacb09
work_keys_str_mv	AT manikandankrishnan pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal AT rukshanapervin pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal AT kalaiselvanganesan pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal AT kannanmurugesan pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal AT govindarajlingannan pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal AT akshaykumarverma pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal AT parasharammshirage pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal AT arumugamsonachalam pressureassistedenhancementinsuperconductingpropertiesoffesubstitutednbse2singlecrystal
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Pressure assisted enhancement in superconducting properties of Fe substituted NbSe2 single crystal

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