Abstract
The Zeeman energy splitting \ensuremath{\delta} of the superconducting tunneling conductances measured in a magnetic field gives a measure of both the g factor of the conduction electrons and also the l=0 antisymmetric Fermi-liquid parameter ${G}^{0}$. We show how a technique of Fourier analysis, known as cepstral analysis, can be used to measure the Zeeman splitting directly from the total conductance. This technique allows measurement of Fermi-liquid effects which are thought to be of particular importance in high-${T}_{c}$ vanadium-based compounds. We present some results on the recent data of Bending, Beasley, and Tsuei on ${\mathrm{V}}_{3}$Ga in which the g factor is found to be nearly 2.0.
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