309 citations · 3.7k across the 111 of their papers we have counts for
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Superconducting dome due to the Fano-Feshbach shape resonance in artificial high-Tc superlattices
Gaetano Campi, Andrea Alimenti, Danielle Villa +7
In this work we provide compelling experimental validation of the Bianconi Perali Valletta (BPV) theory predicting a superconducting dome based on a quantum material design of Arti…
Signature in sound-mode of the exciton bilayer two-dimensional superfluid transition
Giovanni Midei, Filippo Pascucci, Milorad V. Milosevìc +3
Obtaining definitive evidence of exciton superfluidity in electron-hole bilayers in zero magnetic field remains a major longstanding challenge since the condensate is electrically…
Berezinskii-Kosterlitz-Thouless transition with enhanced phase stiffness in -wave strongly coupled two-dimensional superconductors
Sathish Kumar Paramasivam, Andrea Perali, Milorad V. Milošević
We reveal the key role of the -wave symmetry of the superconducting gap in strongly coupled two-dimensional superconductors in determining the properties of the Berezinskii-Kost…
High-Tc superconducting dome in artificial heterostructures made of nanoscale quantum building blocks
Antonio Valletta, Antonio Bianconi, Andrea Perali +2
While the search of high Tc superconductivity was driven mostly by trial and error methodology searching for novel materials, here we provide a quasi-first-principle quantum theory…
Pairing amplification induced by nonadiabatic effects on the electron-phonon interaction throughout the BCS-BEC crossover
Victor Velasco, Giovanni Midei, Massimo Capone +1
Nonadiabatic effects in the electron-phonon coupling are important whenever the ratio between the phononic and the electronic energy scales, the adiabatic ratio, is non negligible.…
Amplitude, phase, and topological fluctuations shaping the complex phase diagram of two-dimensional superconductors
Koichiro Furutani, Giovanni Midei, Andrea Perali +1
We study the amplitude and phase fluctuations of the Ginzburg-Landau quasiorder parameter for superconductors in two spatial dimensions. Starting from the mean-field critical tempe…
Emergent Fano-Feshbach resonance in two-band superconductors with an incipient quasi-flat band: Enhanced critical temperature evading particle-hole fluctuations
Hiroyuki Tajima, Hideo Aoki, Andrea Perali +1
In superconductivity, a surge of interests in enhancing is ever mounting, where a recent focus is toward multi-band superconductivity. In enhancements speci…
Predictive power of the Berezinskii-Kosterlitz-Thouless theory based on Renormalization Group throughout the BCS-BEC crossover in 2D superconductors
Giovanni Midei, Koichiro Furutani, Luca Salasnich +1
Recent experiments on 2D superconductors allow the characterization of the critical temperature and of the phase diagram across the BCS-BEC crossover as a function of density. We o…
Berezinskii-Kosterlitz-Thouless to BCS-like superconducting transition crossover driven by weak magnetic fields in ultra-thin NbN films
Meenakshi Sharma, Sergio Caprara, Andrea Perali +5
The Berezinskii-Kosterlitz-Thouless (BKT) transition in ultra-thin NbN films is investigated in the presence of weak perpendicular magnetic fields. A jump in the phase stiffness at…
High- Berezinskii-Kosterlitz-Thouless transition in 2D superconducting systems with coupled deep and quasi-flat electronic bands with van Hove singularities
Sathish Kumar Paramasivam, Shakhil Ponnarassery Gangadharan, Milorad V. Milošević +1
In the pursuit of higher critical temperature of superconductivity, quasi-flat electronic bands and van Hove singularities in two dimensions (2D) have emerged as a potential approa…
Giant amplification of Berezinskii-Kosterlitz-Thouless transition temperature in superconducting systems characterized by cooperative interplay of small-gapped valence and conduction bands
Giovanni Midei, Andrea Perali
Two-dimensional superconductors and electron-hole superfluids in van der Waals heterostructures having tunable valence and conduction bands in the electronic spectrum are emerging…
Effects of intra-layer correlations on electron-hole double-layer superfluidity
Filippo Pascucci, Sara Conti, Andrea Perali +2
We investigate the correlations acting within the layers in a superfluid system of electron-hole spatially separated layers. In this system of quasi-dipoles, the dominant correlati…
Tunable BCS-BEC crossover, reentrant, and hidden quantum phase transitions in two-band superconductors with tunable valence and conduction bands
Giovanni Midei, Andrea Perali
Two-band electronic structures with a valence and a conduction band separated by a tunable energy gap and with pairing of electrons in different channels can be relevant to investi…
Complex phase-fluctuation effects correlated with granularity in superconducting NbN nanofilms
Meenakshi Sharma, Manju Singh, Rajib K. Rakshit +5
Superconducting nanofilms are tunable systems that can host a 3D-2D dimensional crossover, leading to the Berezinskii-Kosterlitz-Thouless (BKT) superconducting transition approachi…
Causes and consequences of ordering and dynamic phases of confined vortex rows in superconducting nanostripes
Benjamin A. McNaughton, Nicola Pinto, Andrea Perali +1
Understanding the behaviour of vortices under nanoscale confinement in superconducting circuits is of importance for development of superconducting electronics and quantum technolo…
Josephson effect as signature of electron-hole superfluidity in bilayers of van der Waals heterostructures
Filippo Pascucci, Sara Conti, David Neilson +2
We investigate a Josephson junction in an electron-hole superfluid in a double layer TMD heterostructure. Observation of a critical tunneling current is a clear signature of superf…
Suppression of fluctuations in a two-band superconductor with a quasi-1D band
A. A. Shanenko, T. T. Saraiva, A. Vagov +2
Chain-like structured superconductive materials (such as A_2Cr_3As_3, with A = K, Rb, Cs) exhibit the multiband electronic structure of single-particle states, where coexisting qua…
Correlation of strontium anharmonicity with charge-lattice dynamics of the apical oxygens and their coupling to cuprate superconductivity
Steven D. Conradson, Victor Velasco, Marcello B. Silva Neto +12
Cu K edge X-ray absorption spectra of overdoped superconducting and show a remarkably strong correlation of their superconductivit…
Kuramoto synchronization of quantum tunneling polarons for describing the dynamic structure in cuprate superconductors
Victor Velasco, Marcello B. Silva Neto, Andrea Perali +3
A major open topic in cuprates is the interplay between the lattice and electronic dynamics and the importance of their coupling to the mechanism of high-temperature superconductiv…
Hidden Pseudogap and Excitation Spectra in a Strongly Coupled Two-Band Superfluid/Superconductor
Hiroyuki Tajima, Pierbiagio Pieri, Andrea Perali
We investigate single-particle excitation properties in the normal state of a two-band superconductor or superfluid throughout the Bardeen-Cooper-Schrieffer (BCS) to Bose-Einstein-…
Potassium-Doped Para-Terphenyl: Structure, Electrical Transport Properties and Possible Signatures of a Superconducting Transition
N. Pinto, C. Di Nicola, A. Trapananti +7
Preliminary evidence for the occurrence of high-Tc superconductivity in alkali-doped organic materials, such as potassium-doped p-terphenyl (KPT), were recently obtained by magneti…
Mechanism of screening or enhancing the pseudogap throughout the two-band Bardeen-Cooper-Schrieffer to Bose-Einstein condensate crossover
Hiroyuki Tajima, Yuriy Yerin, Pierbiagio Pieri +1
We demonstrate the rise-and-fall of multiple pseudogaps in the Bardeen-Cooper-Schrieffer-Bose-Einstein-condensation (BCS-BEC) crossover in two-band fermionic systems having differe…
Quasi-one-dimensional system as a high-temperature superconductor
T. T. Saraiva, P. J. F. Cavalcanti, A. Vagov +4
It is well-known that quasi-one-dimensional superconductors suffer from the pairing fluctuations that significantly reduce the superconducting temperature or even completely suppre…
BCS-BEC Crossover and Pairing Fluctuations in a Two Band Superfluid/Superconductor: A T Matrix Approach
Hiroyuki Tajima, Andrea Perali, Pierbiagio Pieri
We investigate pairing fluctuation effects in a two band fermionic system, where a shallow band in the Bardeen--Cooper--Schrieffer--Bose--Einstein condensation (BCS-BEC) crossover…