45 citations · 192 across the 19 of their papers we have counts for
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Dynamical local lattice instabilitiy triggered high tc superconductivity
Julius Ranninger
High cuprate superconductors are characterized by two robust features: their strong electronic correlations and their intrinsic dynamical local lattice instabilities. Focusin…
The conceptual heritage of superconductivity - from Meissner-Ochsenfeld to the Higgs Boson
Julius Ranninger
When first proposed in 1957, the BCS theory for superconductivity, which explained the quasi-totality of its thermodynamic and transport properties, was greeted with great circumsp…
The ingap state spectral properties in the cuprates' pseudogap phase
Julius Ranninger, Alfonso Romano
The single-particle excitations, which initiate the pseudogap in the cuprate superconductors at some temperature T^*, relate to specific local spectral features of resonant pairing…
Boson-Fermion Duality and Metastability in Cuprate Superconductors
J. Ranninger, T. Domanski
The intrinsic structural metastability in cuprate high T materials, evidenced in a checker-board domain structure of the CuO planes, locally breaks translational and rotati…
Cooperative localization-delocalization in the high Tc cuprates
Julius Ranninger
The intrinsic metastable crystal structure of the cuprates results in local dynamical lattice instabilities, strongly coupled to the density fluctuations of the charge carriers. Th…
Local dynamical lattice instabilities: Prerequisites for resonant pairing superconductivity
Julius Ranninger, Alfonso Romano
Fluctuating local diamagnetic pairs of electrons, embedded in a Fermi sea, are candidates for non-phonon-mediated superconductors without the stringent conditions on Tc which arise…
First Order Superfluid to Bose Metal Transition in Systems with Resonant Pairing
T. Stauber, J. Ranninger
Systems showing resonant superfluidity, driven by an exchange coupling of strength between uncorrelated pairs of itinerant fermions and tightly bound ones, undergo a first orde…
From an insulating to a superfluid pair-bond liquid
Mario Cuoco, Julius Ranninger
We study an exchange coupled system of itinerant electrons and localized fermion pairs resulting in a resonant pairing formation. This system inherently contains resonating fermion…
Introduction to polaron physics: Basic Concepts and Models
Julius Ranninger
We review the major trends over the past decades in the theoretical and experimental approaches to the underlying physics of Many Polaron systems, concentrating on the cross-over b…
From Cooper-pairs to resonating bipolarons
Julius Ranninger
After a short review of the different physics in the weak and strong coupling regime, resulting in amplitude fluctuation controlled Cooper pair superconductivity and phase fluctuat…
Resonating bipolarons
J. Ranninger, A. Romano
Electrons coupled to local lattice deformations end up in selftrapped localized molecular states involving their binding into bipolarons when the coupling is stronger than a certai…
Resonant pairing isotope effect in polaronic systems
Julius Ranninger, Alfonso Romano
The intermediate coupling regime in polaronic systems, situated between the adiabatic and the anti-adiabatic limit, is characterized by resonant pairing between quasi-free electron…
Superconductor-insulator transition driven by local dephasing
M. Cuoco, J. Ranninger
We consider a system where localized bound electron pairs form an array of "Andreev"-like scattering centers and are coupled to a fermionic subsystem of uncorrelated electrons. By…
The boson-fermion model: An exact diagonalization study
M. Cuoco, C. Noce, J. Ranninger +1
The main features of a generic boson-fermion scenario for electron pairing in a many-body correlated fermionic system are: i) a cross-over from a poor metal to an insulator and fin…
Ground state properties and excitation spectra of non-Galilean invariant interacting Bose systems
G. Jackeli, J. Ranninger
We study the ground state properties and the excitation spectrum of bosons which, in addition to a short-range repulsive two body potential, interact through the exchange of some d…
Hall coefficient and angle-resolved photoemission in systems with strong pair fluctuations
Alfonso Romano, Julius Ranninger
We examine the normal-state temperature and doping dependence of the Hall coefficient in the context of a pair-fluctuation scenario, based on a model where itinerant electrons are…
On the pseudogap phase in high-T_c superconductors
P. Devillard, J. Ranninger
We describe the approach of the superconducting state as a sequence of cross-over phenomena. As the temperature is decreased, uncorrelated pairing of the electrons leads to the ope…