Cyclotron resonance in the quasi-1D organic superconductor (TMTSF)2ClO4

TL;DR

This paper reports the first observation of cyclotron resonance in a quasi-one-dimensional organic superconductor, revealing how weak inter-chain coupling influences electron dynamics and Fermi surface properties.

Contribution

It provides experimental evidence of cyclotron resonance in (TMTSF)2ClO4, demonstrating the impact of weak inter-chain coupling on electron motion in quasi-1D materials.

Findings

Observation of cyclotron resonance in (TMTSF)2ClO4

Resonance depends on magnetic field orientation and Fermi velocity

Reveals details of electron dynamics in quasi-1D Fermiology

Abstract

We report the observation of cyclotron resonance (CR) in a metal possessing pure quasi-one-dimensional Fermiology - namely, the organic linear-chain compound (TMTSF)2ClO4, whose Fermi surface consists of a pair of weakly warped sheets. The CR phenomenon is related to weak inter-chain coupling, which allows electrons constrained on open trajectories to acquire small transverse velocities. Application of an appropriately oriented magnetic field induces periodic motion transverse to the chain direction and, hence, to a resonance in the AC conductivity. The field orientation dependence of the resonance is related simply to the Fermi velocity and lattice periodicity.