Probing the extended non-Fermi liquid regimes of MnSi and Fe

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dc.creatorPedrazzini, P.
dc.creatorJaccard, D.
dc.creatorLapertot, G.
dc.creatorFlouquet, J.
dc.creatorInada, Y.
dc.creatorKohara, H.
dc.creatorOnuki, Y.
dc.date2005-09-29
dc.date.accessioned2026-07-07T09:40:42Z
dc.date.available2026-07-07T09:40:42Z
dc.descriptionRecent studies show that the non-Fermi liquid (NFL) behavior of MnSi and Fe spans over an unexpectedly broad pressure range, between the critical pressure p_c and around 2p_c. In order to determine the extension of their NFL regions, we analyze the evolution of the resistivity rho(T) A(p)T^n at higher pressures. We find that in MnSi the n=3/2 exponent holds below 4.8 GPa=3 p_c, but it increases above that pressure. At 7.2 GPa we observe the low temperature Fermi liquid exponent n=2 whereas for T>1.5 K, n=5/3. Our measurements in Fe show that the NFL behavior rho T^{5/3} extends at least up to 30.5 GPa, above the entire superconducting (SC) region. In the studied pressure range, the onset of the SC transition reduces by a factor 10 down to T_c^onset(30.5 GPa)=0.23 K, while the A-coefficient diminishes monotonically by around 50%.
dc.description2 pages, 2 figures, Proceedings SCES 2005
dc.identifierhttps://arxiv.org/abs/cond-mat/0509772
dc.identifierhttp://arxiv.org/abs/cond-mat/0509772
dc.identifierPhysica B 378-380 (2006) 165-166
dc.identifierdoi:10.1016/j.physb.2006.01.062
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161568
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleProbing the extended non-Fermi liquid regimes of MnSi and Fe
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