The reactions of Zn(OAc)(2) with acetoacetanilide, methyl acetoacetate, o-acetoacetanisidide, and ethyl 2-methylacetoacetate thiosemicarbazones (HTSC(1), HTSC(2), HTSC(3), and HTSC(4), respectively) were explored in methanol. With HTSC(1), HTSC(2), and HTSC(3), following isolation of the corresponding zinc(II) thiosemicarbazonates [Zn(TSC(x))(2)] (x = 1, 2, 3), the mother liquors afforded pyraz...

The palladium(II) bis-chelate complexes of the type [Pd(TSC(1-5))2] (6-10), with their corresponding ligands 4-phenyl-1-(acetone)-thiosemicarbazone, HTSC(1) (1), 4-phenyl-1-(2'-chloro-benzaldehyde)-thiosemicarbazone, HTSC(2) (2), 4-phenyl-1-(3'-hydroxy-benzaldehyde)-thiosemicarbazone, HTSC(3) (3), 4-phenyl-1-(2'-naphthaldehyde)-thiosemicarbazone, HTSC(4) (4), and 4-phenyl-1-(1'-nitro-2'-naphtha...

In this study two nonlinear analysis methods are proposed for investigation of nonlinear e ects of high temperature superconductive(HTSC) thin lm planar microwave circuits. The MoM-HB combination method is based on the combination formulation of the moment method(MoM) and the harmonic balance(HB) technique. It consists of linear and nonlinear solvers. The power series method treats the voltages...

Despite enormous efforts worldwide during the last 16 years, the origin of high-Tc superconductivity (HTSC) in the doped cuprates has still not been settled. From a theoretical and microscopic point of view it is even unclear in the framework of which model the proper answer to the challenging HTSC problem should be searched, apart from all serious many-body difficulties caused by the strong co...

It is shown that the onset of the color superconducting phase occurs in the BCS-BE crossover region. During the last 2-3 years color superconductivity became one of the QCD focal points –see review papers [1]-[3]. To a large extent (but not completely) the basic ideas of the subject are traced back to the BCS theory of superconductivity and its later development. It is known that the discovery ...

Based on a thermodynamic analysis of the relevant experimental data, some anomalies of the diffusion mass-transport during two-dimensional (2D) decompositioning high-temperature superconducting (HTSC) cuprates are considered. Possible mechanism for the manifestation of phase fluctuation-like effects in the HTSC cuprates, especially with respect to the physical properties of melt-textured compos...

In strongly correlated systems the electronic properties at the Fermi energy (E(F)) are intertwined with those at high-energy scales. One of the pivotal challenges in the field of high-temperature superconductivity (HTSC) is to understand whether and how the high-energy scale physics associated with Mott-like excitations (|E-E(F)|>1 eV) is involved in the condensate formation. Here, we report t...

The important role of the electron-phonon interaction (EPI) in explaining the properties of the normal state and pairing mechanism in high-Tc superconductors (HTSC) is discussed. A number of experimental results are analyzed such as: dynamical conductivity, Raman scattering, neutron scattering, ARPES, tunnelling measurements, isotope effect and etc. They give convincing evidence that the EPI is...

Since the time of the first high temperature superconductor was discovered, there is no yet a commonly accepted explanation of this phenomenon. Many publications on the matter start from some plausible reasoning leading to establishing of the model Hamiltonian and a discussion of the structure of the ground state. That plausible reasoning represents the physical view of the authors and, as long...