Some Finite Temperature Characteristics of the High-Tc Cuprates within t-J-U Model
Journal Title: Bulletin of Pure and Applied Sciences Sec. D – Physics - Year 2018, Vol 37, Issue 2
Abstract
The effects of nearest-neighbor (NN) antiferromagnetic (AF) exchange interaction (J) and temperature on high-Tc cuprates have been studied using an eight-site frustrated t-J-U model. Average hole density is taken as <h> = 0.25, appropriate for cuprates. Above a critical temperature, local moment decreases with temperature but increases with J/t. Corresponding double occupancy shows the reverse character. The system becomes more disordered with NN AF interaction. Low temperature specific heat curves show single peak structure where the peak-height decreases with J/t. The t-J-U model appears to be of non-Fermi liquid character.
Authors and Affiliations
N. K. Ghosh
Keywords
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- EP ID EP528874
- DOI 10.5958/2320-3218.2018.00021.0
- Views 122
- Downloads 0
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Some Finite Temperature Characteristics of the High-Tc Cuprates within t-J-U Model
The effects of nearest-neighbor (NN) antiferromagnetic (AF) exchange interaction (J) and temperature on high-Tc cuprates have been studied using an eight-site frustrated t-J-U model. Average hole density is taken as <h>...