Model for the coexistence of d -wave superconducting and charge-density-wave order parameters in high-temperature cuprate superconductors. Gabovich, A. M. & Voitenko, A. I. Physical Review B, 80(22):224501+, 2009.
Model for the coexistence of d -wave superconducting and charge-density-wave order parameters in high-temperature cuprate superconductors [link]Paper  doi  abstract   bibtex   
A theory describing a phase, where d-wave superconductivity coexists with charge-density waves (CDWs), has been developed. Numerical calculations were carried out for a specific case of cuprates when the CDW gap emerges at the nested antinodal regions of the two-dimensional Fermi surface. Different symmetries of the order parameters leads to their involved interplay so that the CDW one Σ(T) is predicted to become temperature re-entrant for certain ranges of model parameters. Here, T is the temperature. At the same time, the superconducting energy gap Δ(T) deviates substantially from the canonical dx2−y2 form. The CDW influence on Δ(T) is different from that on the critical temperature Tc. Hence, the resulting values of 2Δ(0)/Tc are shown to fall into the range 5÷8, which is well known for high-Tc oxides and has not been explained yet.
@article{gabovich_model_2009,
	title = {Model for the coexistence of d -wave superconducting and charge-density-wave order parameters in high-temperature cuprate superconductors},
	volume = {80},
	issn = {1098-0121},
	url = {http://dx.doi.org/10.1103/physrevb.80.224501},
	doi = {10.1103/physrevb.80.224501},
	abstract = {A theory describing a phase, where d-wave superconductivity coexists with charge-density waves (CDWs), has been developed. Numerical calculations were carried out for a specific case of cuprates when the CDW gap emerges at the nested antinodal regions of the two-dimensional Fermi surface. Different symmetries of the order parameters leads to their involved interplay so that the CDW one Σ(T) is predicted to become temperature re-entrant for certain ranges of model parameters. Here, T is the temperature. At the same time, the superconducting energy gap Δ(T) deviates substantially from the canonical dx2−y2 form. The CDW influence on Δ(T) is different from that on the critical temperature Tc. Hence, the resulting values of 2Δ(0)/Tc are shown to fall into the range 5÷8, which is well known for high-Tc oxides and has not been explained yet.},
	number = {22},
	journal = {Physical Review B},
	author = {Gabovich, Alexander M. and Voitenko, Alexander I.},
	year = {2009},
	keywords = {cdw},
	pages = {224501+}
}

Downloads: 0