Fig. 5: Close-up of the spin energy mode. | Nature Communications

Fig. 5: Close-up of the spin energy mode.

From: Evidence for spin-dependent energy transport in a superconductor

Fig. 5

a The odd-in-energy (i.e. \({V}_{\det }\)) component of Fig. 4c, corresponding to a charge imbalance, which is well localised in both \({V}_{\det }\) and Iinj. As a function of \({V}_{\det }\), as expected, the charge imbalance only appears at the gap edge: the vertical dashed lines indicate \({V}_{\det }=\pm | \Delta -{\Delta }_{\det }-{E}_{{\rm{Z}}}| /e\). As a function of the injection current, the signal is maximal (horizontal dotted lines) when only spins of one species (spin down excitations) are injected: Ginj(Vinj) is shown as a thin black line; its scale in the horizontal direction is in arbitrary units. b A vertical slice of a at \({V}_{\det }=(\Delta -{\Delta }_{\det }-{E}_{{\rm{Z}}})/e\) and the same measurement at different magnetic fields linearly spaced down to H = 0 T. The theoretical prediction for H = 1 T is shown in black. The charge imbalance increases slightly then decreases as the magnetic field is lowered. At H = 0 it is undetectable.

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