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Temperature dependence of spin susceptibility in two-dimensional Fermi liquid systems

A. Shekhter·A. M. Finkel'stein
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Abstract

We consider the non-analytic terms in the spin susceptibility arising as a result of rescaterring of pairs of quasiparticles. We emphasize the importance of rescattering in the Cooper channel for the analysis of the temperature dependences in the two-dimensional electron systems in the ballistic regime. In the calculation of the linear in $T$ term we use angular harmonics in the Cooper channel, because for each harmonic the interaction amplitude is renormalized independently. We observe, that as a consequence of strong renormalizations in the Cooper ladder, the temperature derivative of the spin susceptibility may change its sign at low temperatures.

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A. Shekhter, A. M. Finkel'stein. 2006-12-04. Temperature dependence of spin susceptibility in two-dimensional Fermi liquid systems. https://doi.org/10.1103/physrevb.74.205122

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