Extended Data Fig. 3: ‘Two terminal’ thermal conductance on the ν = 2 plateau, at T0 = 15mK. | Nature

Extended Data Fig. 3: ‘Two terminal’ thermal conductance on the ν = 2 plateau, at T0 = 15mK.

From: Heat conductance of the quantum Hall bulk

Extended Data Fig. 3: ‘Two terminal’ thermal conductance on the ν = 2 plateau, at T0 = 15mK.The alternative text for this image may have been generated using AI.

(a) Power dissipated at the source, \({P}_{{\rm{S}}}\), as a function of the source’s temperature squared, for different magnetic fields on the \(\nu =2\) plateau. The low temperature data (up to \(27{\rm{mK}}\)) is linearly fitted to extract the two-terminal thermal conductance, \({\kappa }_{2{\rm{T}}}\), which changes mildly with magnetic field. (b) Top-panel -\({\kappa }_{2{\rm{T}}}\), extracted from (a) as a function of the magnetic field (includes 2k0 due to donors), with an increase away from plateau centre due to the short bulk. Bottom-panel - \({\kappa }_{{\rm{xx}}}\), and \({G}_{{\rm{xx}}}\) as a function of the magnetic field (identical to Fig. 2b). It appears that the appearance of finite heat conductance through the bulk causes \({\kappa }_{2{\rm{T}}}\) to increase slightly.

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