Enhancement of de Haas-van Alphen Oscillation due to Spin in the Magnetic Breakdown System

TL;DR

This paper investigates how the Zeeman effect influences de Haas-van Alphen oscillations in magnetic breakdown systems, revealing amplitude enhancements contrary to semiclassical expectations and discussing implications for organic conductor experiments.

Contribution

It demonstrates that the Zeeman term can enhance certain oscillation amplitudes in magnetic breakdown systems, challenging semiclassical predictions.

Findings

Amplitude of specific oscillations is enhanced by the Zeeman effect.

Contradicts semiclassical theory which predicts reduction.

Provides interpretation relevant to organic conductor experiments.

Abstract

The effects of the Zeeman term on the de Haas-van Alphen oscillation is studied in the magnetic breakdown system. We find that the amplitude of the oscillation with the frequencies of $f_{\beta} + f_{\alpha}$ and $f_{\beta} + 2f_{\alpha}$ are enhanced by the Zeeman term, while they are expected to be reduced in the semiclassical theory. A possible interpretation of the experiments in organic conductors is discussed.