Interface-induced superconductivity and strain-dependent spin density

Jan 13, 2013 - 1a2), the center of the circular Fermi surface mismatches the center of the ... All data are taken at 30 K. d, Temperature dependence o...

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Jun 2, 2010 - ˆGfcˆGff ) ,. (2.13) which satisfies the Dyson equation,. ̂G−1(k,εn) = iεn − ̂Hk ,. (2.14) where εn = πT(2n + 1) are the Matsubara frequencies. The system of equations is closed by the self-consistency equations for the SC a

Jul 16, 2009 - (∆e < 0) onto the hole Fermi surface with the positive order parameter (∆h > 0). Whenever the two FSs intersect, an SDW gap opens up. It seems obvious that, when that happens, ∆ on the newly formed FSs should change sign, that is

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Jul 23, 2013 - match the Cooper pair state to the attractive regions, Tc may rise to the experimentally accessible range. ... In our previous work [5–7] we focussed on clarifying the general features of the magnetic interaction model. ... to be pai

Jan 7, 2015 - I. INTRODUCTION. One of the major themes in the physics of condensed matter is unconventional superconductivity in Fe-based materials1–4.

In Chapter (3) we will illustrate the model Eq. (1) starting from the microscopic Hubbard model. ...... The solid-liquid melting transition occurs at Hm (∼ 25T).

Phone +43-316-873-8180,. Fax:+43-316-873-8677, Email:[email protected] ... The question is whether there is a way to re- verse this result and have superconductivity “win” the competition against CDW, by ... i. e. for superconductivity t

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Dec 2, 2011 - we use these functionals to obtain descriptions of the critical applied magnetic .... exactly the same physical state, in the sense that all physically .... which the magnetic field for the vortex-free minimizer is energetically optimal

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Nov 7, 2012 - as a Pomeranchuck instability [1], such as the Stoner ... σ0(r)=2. ∑ m0 p(r) = 0. (4) jσ,i = 2. ∑ p vp,im0 p(r)(1 +. Fa. 1. 2. ) = 1. 2 vf (1 +. Fa. 1. 2. ) ...

In these systems the valence and magnetic critical points, at pv and pc ... +41-22-379-6366; fax: +41-22-379-6869; e-mail: [email protected] 1.