Record #558847

DFG project G:(GEPRIS)165254915

Doping Dependent Evolution of the Fermi Surface and Competing Ordering Phenomena in Superconduction Cuprates

Coordinator	Professor Dr. Rudolf Gross
Grant period	2010 - 2013
Funding body	Deutsche Forschungsgemeinschaft
	DFG
Identifier	G:(GEPRIS)165254915

Note: The detailed knowledge of the size and topology of the Fermi surface as well as its evolution with doping is a key ingredient for understanding the physics of the cuprate superconductors. So far, information on the Fermi surface has been mostly obtained from surface-sensitive ARPES experiments, suffering from surface polarization and self-doping effects. Fortunately, the quality of single crystals has been improved to a level, allowing for the first time for the observation of magnetic quantum oscillations (Shubnikovde Haas and de Haas-van Alphen effect). This opened up the possibility for a completely new class of experiments, providing the highly desired information on the bulk electronic properties of cuprate superconductors. The key goal of this proposal is the detailed and systematic study of the size and topology of the Fermi surface of various cuprate superconductors as well as its evolution with doping by means of magnetic quantum oscillations. Our experiments are based on ultra-clean single crystals, for which the observation of magnetic quantum oscillations has been successfully demonstrated very recently. They are expected to provide new and valuable information on the origin of superconductivity and competing ordering phenomena in the cuprate superconductors.

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Record created 2023-02-03, last modified 2024-09-27

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