EMP is funded through the Horizon2020 programme of the European Commission.
Selected Publications

Verification of Wiedemann–Franz Law in Silver with Moderate Residual Resistivity Ratio

Marijn Lucas, Lev V. Levitin, Petra Knappová, Ján Nyéki, Andrew Casey, John Saunders

Electrical and thermal transport were studied in a vacuum-annealed polycrystalline silver wire with residual resistivity ratio 200 – 400, in the temperature range 0.1 - 1.2 K and in magnetic fields up to 5 T. Both at zero field and at 5 T the wire exhibits the Wiedemann–Franz law with the fundamental Lorenz number, contrary to an earlier report (Gloos et al., in Cryogenics 30:14–18, 1990). Our result demonstrates that silver is an excellent material for thermal links in ultra-low-temperature experiments operating at high magnetic fields.

J Low Temp Phys (2023)

doi: 10.1007/s10909-023-03009-6