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arXiv · 0902.3809

Fermi-surface pockets in magnetic underdoped cuprates from first principles

Alessio Filippetti·Danilo Puggioni·Vincenzo Fiorentini
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Abstract

Using an innovative first-principles band theory enabling the exploration of Mott-insulating magnetic cuprates, we study the Fermi surface of underdoped Y$_{1-x}$Ca$_x$Ba$_2$Cu$_3$O$_6$ in a selection of magnetically ordered and polaronic states. All phases exhibit qualitatively similar, hole-like nodal-point small pockets. Their properties (area, masses, mass sign) only partially match those extracted from recent quantum-oscillation experiments. Ab initio calculations, therefore, do not straightforwardly support a magnetic origin of quantum oscillations.

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Alessio Filippetti, Danilo Puggioni, Vincenzo Fiorentini. 2009-02-22. Fermi-surface pockets in magnetic underdoped cuprates from first principles. https://doi.org/10.1209/0295-5075%2F88%2F67009

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