2000/11/29 by N. Harrison, Harrison, N., N. Biskup +9
Chemistry · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Inorganic Chemistry and Materials #Magnetism in coordination complexes #Organic and Molecular Conductors Research #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0011478
8 pages, 8 figures
arxiv created 2000/11/29 · openalex publication_date 2000/11/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report the results of a detailed study of the field orientation-dependence of the de Haas-van Alphen waveform in α-(BEDT-TTF)2KHg(SCN)4. By considering the field orientation-dependence of the sign and phase of the fundamental α frequency, at fields both well above and below the kink transition field, it is found that a single value for the product of the effective mass with the electron \it g-factor can explain the experimental data deep within both the high magnetic field and low magnetic field phases. This implies that spin-splitting does not occur within the low magnetic field phase until the angle between the magnetic field and the normal to the conducting planes is ∼~42^∘. This finding contrasts greatly with that recently published by Sasaki and Fukase, implying that electron-electron interactions do not play a significant role in the formation of the charge-density wave ground state. The manner in which the amplitude of the waveform of the oscillations is damped within the low magnetic field phase is indicative of a non harmonically indexed reduction of the amplitude, thereby eliminating both magnetic breakdown and impurity scattering as dominant damping mechanisms within this phase. Meanwhile, the presence of a large amplitude second harmonic within the low magnetic field phase that has a negative sign over a broad range of angles can only be explained by the frequency doubling effect.