2005/05/25 by Jianbao Wu, Jian-Bao Wu, Ming-Xu Pei +1 · 7 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Cuprate #Doping #Ginzburg–Landau theory #High-temperature superconductivity #Landau theory #Magnetic and transport properties of perovskites and related materials #Materials science #Phase transition #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum mechanics #Quantum tunnelling #Superconductivity #Transition temperature #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.71.172507
published in Physical Review B 71(17) (American Physical Society) · 5 pages, 3 figures
openalex publication_date 2005/05/25 · arxiv created 2005/09/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We propose a finite-temperature Landau theory that describes competing orders and interlayer tunneling in cuprate superconductors as an important extension to a corresponding theory at zero temperature [Chakravarty et al., Nature 428, 53 (2004)], where the superconducting transition temperature Tc is defined in three possible ways as a function of the zero-temperature order parameter. For given parameters, our theory determines Tc without any ambiguity. In mono- and double-layer systems we discuss the relation between the zero-temperature order parameter and the associated transition temperature in the presence of competing orders, and draw a connection to the puzzling experimental fact that the pseudogap temperature is much higher than the corresponding energy scale near optimum doping. Applying the theory to multilayer systems, we calculate the layer-number dependence of Tc. In a reasonable parameter space the result turns out to be in agreement with experiments.