Possible nature of the pseudogap anomalies in HTSC

Journal Article · Mon Dec 15 04:00:00 EST 2008 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S106377610812008X· OSTI ID:21241872

Ivanenko, O M ^[1]

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1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)

An HTSC model, in which the interaction of valence-band electrons with diatomic negative U centers is assumed to be responsible for the anomalous properties of HTSC compounds, is proposed and used to explain the nature of the pseudogap and pseudogap anomalies (including the giant Nernst effect, the anomalous diamagnetism above T{sub c}, the 'transfer' of the optical spectral weight). For YBa{sub 2}Cu{sub 3}O{sub 6+{delta}}, the pseudogap opening temperature T* and T{sub c} are calculated as functions of the degree of doping {delta}. The calculated dependences agree quantitatively with the experimental dependences without using scale fitting parameters. The good agreement between the calculated and experimental results can serve as an argument for the proposed HTSC model.

• OSTI ID: 21241872
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 6 Vol. 107; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIAMAGNETISM
ELECTRONS
INTERACTIONS
NERNST EFFECT
U CENTERS