Resonant and crossover phenomena in a multiband superconductor: Tuning the chemical potential near a band edge

D Innocenti, N Poccia, A Ricci, A Valletta… - Physical Review B …, 2010 - APS
Resonances in the superconducting properties, in a regime of crossover from BCS to mixed
Bose-Fermi superconductivity, are investigated in a two-band superconductor where the …

Superconductivity of a striped phase at the atomic limit

A Bianconi, A Valletta, A Perali, NL Saini - Physica C: Superconductivity, 1998 - Elsevier
The resonant amplification of the superconducting critical temperature, the isotope effect, the
change of the chemical potential in a particular 2D striped phase formed by superconducting …

Stripe structure in the plane of perovskite superconductors

A Bianconi, NL Saini, T Rossetti, A Lanzara, A Perali… - Physical Review B, 1996 - APS
The Cu-O pair-distribution function in a Bi 2 Sr 2 CaCu 2 O 8+ y superconductor has been
measured by polarized Cu K-edge extended x-ray-absorption fine structure at T< T c. The …

Topology of the Pseudogap and Shadow Bands in at Optimum Doping

NL Saini, J Avila, A Bianconi, A Lanzara, MC Asensio… - Physical review …, 1997 - APS
We report topology of the Fermi surface of Bi 2 Sr 2 CaCu 2 O 8+ δ superconducting system
at the optimum doping determined by sequential angle-scanning photoemission combined …

Dimensional crossover and incipient quantum size effects in superconducting niobium nanofilms

N Pinto, SJ Rezvani, A Perali, L Flammia… - Scientific reports, 2018 - nature.com
Superconducting and normal state properties of Niobium nanofilms have been
systematically investigated as a function of film thickness, on different substrates. The width …

Screening of pair fluctuations in superconductors with coupled shallow and deep bands: A route to higher-temperature superconductivity

L Salasnich, AA Shanenko, A Vagov, JA Aguiar… - Physical Review B, 2019 - APS
A combination of strong Cooper pairing and weak superconducting fluctuations is crucial to
achieve and stabilize high-T c superconductivity. We demonstrate that a coexistence of a …

Lifshitz transitions and zero point lattice fluctuations in sulfur hydride showing near room temperature superconductivity

A Bianconi, T Jarlborg - Novel Superconducting Materials, 2015 - degruyter.com
Emerets's experiments on pressurized sulfur hydride have shown that H3S metal has the
highest known superconducting critical temperature Tc= 203 K. The Emerets data show …

Multiband material with a quasi-1D band as a robust high-temperature superconductor

TT Saraiva, PJF Cavalcanti, A Vagov, AS Vasenko… - Physical Review Letters, 2020 - APS
It is well known that superconductivity in quasi-one-dimensional (Q1D) materials is hindered
by large fluctuations of the order parameter. They reduce the critical temperature and can …

Local lattice instability and stripes in the plane of the system by polarized XANES and EXAFS

NL Saini, A Lanzara, H Oyanagi, H Yamaguchi, K Oka… - Physical Review B, 1997 - APS
Temperature-dependent polarized Cu K-edge x-ray absorption has been used to investigate
local structural distortions in the CuO 2 plane of the La 1.85 Sr 0.15 CuO 4 system. The Cu-O …

Emergent phenomena in multicomponent superconductivity: an introduction to the focus issue

MV Milošević, A Perali - arXiv preprint arXiv:1504.06995, 2015 - arxiv.org
Multicomponent superconductivity is a novel quantum phenomenon in many different
superconducting materials, such as multiband ones in which different superconducting gaps …