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Nonlocal excitations and 1/8 singularity in cuprates
Momentum-dependent excitation spectra of the two-dimensional Hubbard model on a square lattice have been investigated at zero temperature on the...
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Growth of Sr2CuO3+δ superconductor single crystals at high pressure
We have successfully synthesized Sr 2 CuO 3+ δ single crystals under high pressure and high temperature for the first time. The structure analysis show...
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Andreev reflection and tunneling spectrum in a superlattice of metal-superconductor junctions
The tunneling spectrum of an electron and a hole in a superlattice of NS junctions is computed using the BTK approach and the transfer matrix method....
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The high-temperature superconductivity in cuprates
We discuss the high-temperature superconductivity in copper oxide ceramics. We propose an effective Hamiltonian to describe the dynamics of electrons...
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Superconducting properties of Ba2Ca7Cu8O16(O0.8+δ F1.2) studied via reversible magnetization
The Ba 2 Ca 7 Cu 8 O 16 (O 0.8+ δ F 1.2 ) (F-0278) superconductor with 8 CuO 2 planes in the structural unit was investigated by analyzing the reversible...
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Flux-pinning properties of YBa2Cu3O7−x multilayered films with Y2O3 and ZnO nanoparticle inclusions
We investigated the flux-pinning properties of YBa 2 Cu 3 O 7− x (YBCO) films in which Y 2 O 3 and ZnO nanoparticles were uniformly embedded by using the...
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Comments on the d-wave pairing mechanism for cuprate high T c superconductors: Higher is different?
The question of pairing glue for the cuprate superconductors (SC) is revisited and its determination through the angle resolved photo-emission...
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A reflection on the contrast between the Cooper pairing in iron-based and conventional superconductors
In this Perspective article we review retrospectively the streamline of our work on iron-based superconductors, and reflect on the mechanism of...
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Mott physics, sign structure, ground state wavefunction, and high-T c superconductivity
In this article I give a pedagogical illustration of why the essential problem of high- T c superconductivity in the cuprates is about how an...
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Superconductivity in the cuprates: Deduction of mechanism for d-wave pairing through analysis of ARPES
In the Eliashberg integral equations for d-wave superconductivity, two different functions ( α 2 F ) n ( ω, θ ) and ( α 2 F ) p,d ( ω ) determine, respectively, the...
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Superconductivity and spin fluctuations
In the conventional superconductors, the Cooper pairs are mediated by phonons, which is a process where only the correlations between the phonons and...
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Nuclear magnetic resonance studies of vortices in high temperature superconductors
The distinct distribution of local magnetic fields due to superconducting vortices can be detected with nuclear magnetic resonance (NMR) and used to...
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Structural organization in the Cu80Zr20 metallic glass
The laws of atomic restructuring in the Cu 80 Zr 20 metallic glass during melt quenching are studied by molecular dynamics simulation using...
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Local density of states around two nonmagnetic impurities in cuprate superconductors
The local density of states (LDOS) around two nonmagnetic impurities which are located at different sites is studied within the two-dimensional t-J-U ...
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Commentary on the superconducting and magnetic properties of the ruthenocuprates
Presented in this commentary is a short discussion of the superconducting and magnetic properties of selected compounds of ruthenocuprates, with an...
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Interplay of superconductivity and magnetism in presence of inter sub-lattice effect in cuprates
In the present communication, we report a model Hamiltonian to study the interplay between the two long range orders of anti-ferromagnetism (AFM) and...
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The dependence of critical temperature on oxygen concentration in YBa2Cu3O6+x in terms of the fragmented chain model
An extended ASYNNNI model, that beside nearest-neighbour and next-nearest neighbour O-O interactions in the basal plane also includes interactions...
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Fabrication of single-grain GdBa2Cu3O7−x bulk superconductors with a new kind of liquid source by the top seeded infiltration and growth technique
Compared to the conventional melt growth (MG) method, the top seeded in- filtration and growth (TSIG) process is an effective way for preparing bulk...
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Generalizing the Cooper-pair instability to doped Mott insulators
Copper oxides become superconductors rapidly upon do** with electron holes, suggesting a fundamental pairing instability. The Cooper mechanism...
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Effects of low-level La do** and ageing on TlPb-1223 high T c superconductors
Bulk samples of the nominal composition of (Tl 0.6 Pb 0.5 )(Sr 0.8 Ba 0.2 ) 2 Ca 2 Cu 3 O 8+δ − x LaO 1.5 ( x = 0–0.1) were prepared by using two-step process and their...