Strongly Forbidden Thermodynamic Oscillations in Quasi-One-Dimensional Conductors

TL;DR

This paper predicts the existence of strongly forbidden thermodynamic oscillations in certain quasi-one-dimensional conductors due to electron interactions and magnetic breakdown, suggesting experimental discovery in specific materials.

Contribution

It introduces the theoretical prediction of forbidden thermodynamic oscillations in Q1D conductors caused by electron-electron interactions and magnetic breakdown.

Findings

Forbidden oscillations are predicted to exist in specific Q1D conductors.

These oscillations are due to electron-electron interactions and magnetic breakdown.

Potential experimental observation in (TMTSF)$_2$ClO$_4$ and (Per)$_2$Au(mnt)$_2$.

Abstract

We theoretically show that strongly forbidden oscillations of a specific heat have to exist in metallic phases of some quasi-one-dimensional (Q1D) conductors. They appear due to electron-electron interactions under condition of the magnetic breakdown phenomenon between the so-called open interference electron orbits. We argue that such forbidden thermodynamic oscillations can exist in Q1D conductors (TMTSF)$_2$ClO$_4$ and (Per)$_2$Au(mnt)$_2$, where TMTSF stands for tetramethyltetraselenafulvalene, Per is polycyclic aromatic hydrocarbon and mnt is mononitrotoluene, and suggest to discover them.