Fig. 2: Scattering time, Planckian bound, and the FL-NFL cross-over. | Nature Communications

Fig. 2: Scattering time, Planckian bound, and the FL-NFL cross-over.

From: How heat propagates in liquid 3He

Fig. 2

a Fermion-fermion scattering time, τκ as a function of temperature for two molar volumes17. The blue solid line represents the Planckian time: \({\tau }_{P}=\frac{\hslash }{{k}_{B}T}\). Note that τκ tends to fall below τP at sufficiently high temperature. b The phase diagram of 3He10 and the fuzzy border between the Fermi liquid (FL) and the non-Fermi liquid (NFL) regimes. Also shown are temperatures below which τκ > τP or τκ > 2τP.

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