A5080418023- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Ferroelectric and Piezoelectric Materials
- Electronic and Structural Properties of Oxides
- Metal and Thin Film Mechanics
- Theoretical and Computational Physics
- Inorganic Fluorides and Related Compounds
- Organic and Molecular Conductors Research
- Advanced Chemical Physics Studies
- Acoustic Wave Resonator Technologies
- High-pressure geophysics and materials
- Superconductivity in MgB2 and Alloys
- Lubricants and Their Additives
- Quantum and electron transport phenomena
- Superconducting and THz Device Technology
University of Zagreb
2021-2025
Metallic strontium titanate (SrTiO3) is known to have both normal-state and superconducting properties that strongly vary over a wide range of charge carrier densities, but the complex interplay between lattice electronic degrees freedom has hindered development clear qualitative description observed behavior. A major challenge understand how carriers themselves evolve with doping temperature, possible polaronic effects evidence an effective mass increases temperature. Here we use 47,49Ti...
The cuprate superconductors are among the most widely studied quantum materials, yet there remain fundamental open questions regarding their electronic properties and role of structural degrees freedom. Recent neutron x-ray scattering measurements uncovered exponential scaling with temperature strength orthorhombic fluctuations in tetragonal phase $La_{2-x}Sr_xCuO_4$ $Tl_2Ba_2CuO_{6+y}$, unusual behavior that closely resembles prior results for emergence superconducting fluctuations, points...
Abstract The doped perovskite BaBiO 3 exhibits a maximum superconducting transition temperature ( T c ) of 34 K and was the first high- oxide to be discovered, yet pivotal questions regarding nature both metallic states remain unresolved. Although it is generally thought that superconductivity in bismuthates conventional s -wave type, pairing mechanism still debated, with strong electron-phonon coupling bismuth valence or bond disproportionation possibly playing role. Here we use diffuse...
We study the influence of anisotropy, treated as a dimensional crossover between 1D and 3D systems, on topological instability induced by (self-consistent) uniaxial periodic potential. The mechanism which is based involves reconstruction Fermi surface, from initially closed pockets to surface with open sheets, creating two peculiar points in band dispersion---the saddle point elliptical point, pseudogap electron density states develops. self-consistent potential appears result interactions,...
Understanding the extent and role of inhomogeneity is a pivotal challenge in physics cuprate superconductors. While it known that structural electronic prevalent cuprates, has proven difficult to disentangle compound-specific features from universally relevant effects. We combine advanced neutron x-ray diffuse scattering with numerical modeling, which enables us obtain insight into bulk correlations HgBa$_2$CuO$_{4+\delta}$. This exhibits high optimal transition temperature nearly 100 K,...
Metallic strontium titanate (SrTiO$_3$) is known to have both normal-state and superconducting properties that vary strongly over a wide range of charge carrier densities. This indicates the importance nonlinear dynamics, has hindered development clear qualitative description observed behaviour. A major challenge understand how carriers themselves evolve with doping temperature, possible polaronic effects evidence an effective mass increases temperature. Here we use $^{47,49}$Ti nuclear...
The doped perovskite BaBiO$_3$ exhibits a maximum superconducting transition temperature ($T_c$) of 34 K and was the first high-$T_c$ oxide to be discovered, yet pivotal questions regarding nature both metallic states remain unresolved. Although it is generally thought that superconductivity in bismuthates conventional s-wave type, pairing mechanism still debated, with strong electron-phonon coupling bismuth valence or bond disproportionation possibly playing role. Here we use diffuse x-ray...