Breakdown of the Migdal approximation at Lifshitz transitions with giant zero-point motion in the H3S superconductor

T Jarlborg, A Bianconi - Scientific reports, 2016 - nature.com
While 203 K high temperature superconductivity in H3S has been interpreted by BCS theory
in the dirty limit here we focus on the effects of hydrogen zero-point-motion and 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 …

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 …

Neutron Diffraction Evidence of Microscopic Charge Inhomogeneities in the Plane of Superconducting ( )

ES Božin, GH Kwei, H Takagi, SJL Billinge - Physical Review Letters, 2000 - APS
High-resolution atomic pair distribution functions have been obtained using neutron powder
diffraction data from La 2− x Sr x CuO 4 over the range of doping 0≤ x≤ 0.30 at 10 K …

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 …

Feshbach shape resonance in multiband superconductivity in heterostructures

A Bianconi - Journal of Superconductivity, 2005 - Springer
We report experimental data showing the Feshbach shape resonance in the electron doped
MgB 2 where the chemical potential is tuned by Al, Sc, and C substitutions. The scaling of …

Charge-stripe ordering from local octahedral tilts: Underdoped and superconducting

ES Božin, SJL Billinge, GH Kwei, H Takagi - Physical Review B, 1999 - APS
The local structure of La 2− x Sr x CuO 4, for 0<~ x<~ 0. 3 0, has been investigated using the
atomic pair distribution function (PDF) analysis of neutron powder-diffraction data. The local …

Advanced McMillan's equation and its application for the analysis of highly-compressed superconductors

EF Talantsev - Superconductor Science and Technology, 2020 - iopscience.iop.org
Any theory of electron-phonon mediated superconductivity requires knowledge of the full
phonon spectrum ${\alpha^ 2}\left (\omega\right)\cdot F\left (\omega\right) $ in order to …

Superstripes

A Bianconi - International Journal of Modern Physics B, 2000 - World Scientific
A superconducting superlattice of quantum stripes with a particular shape that gives the
amplification of the critical temperature is called" superstripes". This superlattice is …