Superconductivity in Quantum Complex Matter: the Superstripes Landscape

Abstract

While in XX century the theory of superconductivity has focused on a homogeneous metal with a rigid lattice which can be reduced to a single effective conduction band in the dirty limit. Today in the XXI century, the physics of superconductivity is focusing on complexity of quantum matter where novel quantum functionalities with lattice inhomogeneity at nanoscale (between 1 nm and 100 nm) and at mesoscopic scale (in the range 100-10000 nm), where the electronic structure need to be described by multiple Fermi surfaces and multiple gaps in the superconducting phase in the clean limit. The present issue of Journal of superconductivity and Novel magnetism collects papers presented at the International Conference Superstripes 2019 which was held on June 23-29, 2019, in Ischia Island, Italy. The series of Stripes conference started on Dec 8 1996 and it has contributed to scientific advances in the new physics of superconductivity in quantum complex systems in these last 23 years where polarons, strain, multigap superconductivity, exchange interaction between condensates, granular superconductivity and percolation play a key role. The articles collected in this issue cover hot topics of the new quantum physics of complex matter including the mechanism of high temperature superconductivity, complex magnetic orders and orbital physics in strongly correlated materials which have been growing rapidly in these last two years opening new perspectives also in mesoscopic quantum engineering.

arXiv comment14 pages, 4 figures

References in corpus (35)

• The Unexpected Properties of Alkali Metal Iron Selenide Superconductors
• Inhomogeneity of charge density wave order and quenched disorder in a high Tc superconductor
• Resonant and crossover phenomena in a multiband superconductor tuning the chemical potential near a band edge
• Electron-lattice interaction and its impact on high Tc superconductivity
• The gap amplification at a "shape resonance" in a superlattice of quantum stripes: a mechanism for high Tc
• Optimum inhomogeneity of local lattice distortions in La2CuO4+y
• Inhomogeneous superconductivity and the "pseudogap state of novel superconductors
• Breakdown of the Migdal approximation at Lifshitz transitions with giant zero-point motion in H3S superconductor
• Theoretical possibilities for flat-band superconductivity
• Correlation-driven insulator-metal transition in near-ideal vanadium dioxide films
• Superconductivity above the lowest Earth temperature in pressurized sulfur hydride
• Sc substitution for Mg in MgB2: effects on Tc and Kohn anomaly
• A Superconductor Made by a Metal Heterostructure at the Atomic Limit Tuned at the "Shape Resonance": MgB2
• Direct observation of nanoscale interface phase in the superconducting chalcogenide K${}_x$Fe${}_{2-y}$Se${}_2$ with intrinsic phase separation
• Shape resonance for the anisotropic superconducting gaps near a Lifshitz transition: the effect of electron hopping between layers
• Possible Fano resonance for high Tc multi-gap superconductivity in p-Terphenyl doped by K at the Lifshitz transition
• High Tc superconductivity at a critical strain and charge density in diborides
• Intrinsic arrested nanoscale phase separation near a topological Lifshitz transition in strongly correlated two-band metals
• High Temperature superconductivity in a hyperbolic geometry of complex matter from nanoscale to mesoscopic scale
• Study of temperature dependent atomic correlations in MgB${}_2$
• Fermi-Bose mixtures and BCS-BEC crossover in high-Tc superconductors
• Isotope effect on the E2g phonon and mesoscopic phase separation near the electronic topological transition in Mg1-xAlxB2
• Incommensurate lattice distortion in the high temperature tetragonal phase of La${}_{2-x}$(Sr,Ba)${}_x$CuO${}_4$
• CDW and similarity of the Mott-Insulator-to-Metal transition in cuprates with the gas to liquid-liquid transition in supercooled water
• Is there any hidden symmetry in the stripe structure of perovskite high temperature superconductors?
• Strain induced orbital dynamics across the Metal Insulator transition in thin VO2/TiO2(001) films
• Effect of CuO2 lattice strain on the electronic structure and properties of high-Tc cuprate family
• Direct Visualization of Spatial inhomogeneity of Spin Stripes Order in La1.72Sr0.28NiO4
• Fractionalizing a local pair density wave: a good "recipe" for opening a pseudo-gap
• Dynamic coexistence of various configurations: clusters vs.nuclei
• Two-component energy spectrum of cuprates in the pseudogap phase and its evolution with temperature and at charge ordering
• Inhomogeneous Charge State in HTSC Cuprates and CMR Manganites
• Tuning Crystal Field Potential by Orbital Dilution in $d^4$ Oxides
• Topology controlled phase coherence and quantum fluctuations in superconducting nanowires
• Comparison Between the f-Electron and Conduction-Electron Density of States in the Falicov-Kimball Model at Low Temperature

Cited by in corpus (2)

• Spin-orbit coupling controlling the superconducting dome of artificial superlattices of quantum wells
• High-Tc superconducting dome in artificial heterostructures made of nanoscale quantum building blocks