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26 April 2024 |
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Spin-zero anomaly in the magnetic quantum oscillations of a two-dimensional metal | | J. Wosnitza
; V. M. Gvozdikov
; J. Hagel
; P. J. Meeson
; J. A. Schlueter
; R. W. Winter
; G. L. Gard
; | | Date: |
8 Dec 2004 | | Subject: | Strongly Correlated Electrons; Other | cond-mat.str-el cond-mat.other | | Abstract: | We report on an anomalous behavior of the spin-splitting zeros in the de Haas-van Alphen (dHvA) signal of a quasi-two-dimensional organic superconductor. The zeros as well as the angular dependence of the amplitude of the second harmonic deviate remarkably from the standard Lifshitz-Kosevich (LK) prediction. In contrast, the angular dependence of the fundamental dHvA amplitude as well as the spin-splitting zeros of the Shubnikov-de Haas signal follow the LK theory. We can explain this behavior by small chemical-potential oscillations and find a very good agreement between theory and experiment. A detailed wave-shape analysis of the dHvA signal corroborates the existence of an oscillating chemical potential. | | Source: | arXiv, cond-mat/0412202 | | Services: | Forum | Review | PDF | Favorites | |
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