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Dresden 2006 – scientific programme

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TT: Tiefe Temperaturen

TT 28: Correlated Electrons: General Theory

TT 28.10: Talk

Thursday, March 30, 2006, 12:30–12:45, HSZ 301

Thermodynamics of a Fermi liquid in a magnetic field. — •Dmitri Efremov1, Joseph Betouras2, and Andrey Chubukov31Technical University of Dresden — 2University of Leiden — 3University of Wisconsin

We present calculations of the non-analytic terms in the spin susceptibility χs(T) and the specific heat C(T) to systems in a magnetic field. Without a field, χs(T) and C(T)/T are linear in T in 2D, while in 3D, χs(T) is proportional to T2 and C(T)/T proportional to T2 logT. We show that in a magnetic field, the linear in T terms in 2D become scaling functions of µB H/T. We present explicit expressions for these functions and show that at high fields, µB HT, χs(T,H) scales as |H|. We also show that in 3D, χs(T,H) becomes non-analytic in a field and at high fields scales as H2 log|H|

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