superconductivity with incipient bands: Doping dependence and STM signatures

J Böker, PA Volkov, KB Efetov, I Eremin - Physical Review B, 2017 - APS
Motivated by the recent observations of small Fermi energies and comparatively large
superconducting gaps, present also on bands not crossing the Fermi energy (incipient …

On the size of superconducting islands on the density-wave background in organic metals

VD Kochev, SS Seidov, PD Grigoriev - Magnetochemistry, 2023 - mdpi.com
Most high-T c superconductors are spatially inhomogeneous. Usually, this heterogeneity
originates from the interplay of various types of electronic ordering. It affects various …

Inhomogeneous superconductivity onset in FeSe studied by transport properties

PD Grigoriev, VD Kochev, AP Orlov, AV Frolov… - Materials, 2023 - mdpi.com
Heterogeneous superconductivity onset is a common phenomenon in high-T c
superconductors of both the cuprate and iron-based families. It is manifested by a fairly wide …

Conductivity of anisotropic inhomogeneous superconductors above the critical temperature

SS Seidov, KK Kesharpu, PI Karpov, PD Grigoriev - Physical Review B, 2018 - APS
We propose a model and derive analytical expressions for conductivity in heterogeneous
fully anisotropic conductors with ellipsoid superconducting inclusions. This model and …

Anisotropic zero-resistance onset in organic superconductors

VD Kochev, KK Kesharpu, PD Grigoriev - Physical Review B, 2021 - APS
We study the coexistence of superconductivity (SC) and density-wave state and reconcile
various puzzling experimental data in organic superconductors (TMTSF) 2 PF 6 and …

Negative -axis longitudinal magnetoresistance in FeSe

ML Amigó, JI Facio, G Nieva - Physical Review B, 2024 - APS
Below the structural transition occurring at T s= 90 K, FeSe exhibits positive transverse
magnetoresistance when the current is applied parallel to the ab plane. In this study, we …

Anisotropic effect of appearing superconductivity on the electron transport in FeSe

PD Grigoriev, AA Sinchenko, KK Kesharpu, A Shakin… - JETP Letters, 2017 - Springer
A theoretical model has been proposed to describe the conductivity of a layered anisotropic
normal metal containing small superconducting inclusions at an arbitrary eccentricity of …

Evolution of Shape and Volume Fraction of Superconducting Domains with Temperature and Anion Disorder in (TMTSF)2ClO4

KK Kesharpu, VD Kochev, PD Grigoriev - Crystals, 2021 - mdpi.com
In highly anisotropic organic superconductor (TMTSF) 2 ClO 4, superconducting (SC) phase
coexists with metallic and spin-density wave phases in the form of domains. Using the …

First-order phase transition between superconducting and charge/spin density wave states causes their coexistence in organic metals

SS Seidov, VD Kochev, PD Grigoriev - Physical Review B, 2023 - APS
The interplay between superconductivity (SC) and spin/charge density wave (DW) in organic
metals shows many similarities to high-T c superconductors. It also contains many puzzles …

Excess conductivity of anisotropic inhomogeneous superconductors above the critical temperature

TI Mogilyuk, PD Grigoriev, KK Kesharpu… - Physics of the Solid …, 2019 - Springer
The theoretical model of conductivity of a layered anisotropic normal metal containing small
superconducting ellipsoidal granules with an arbitrary ratio of semiaxes is developed …