activity
19982026
most citedGround state instability in systems of strongly interacting fermions

35 citations · 88 across the 11 of their papers we have counts for

collaborators

11 papers

cond-mat.str-el2026

Some features of high-temperature superconductivity on flat bands

V. R. Shaginyan, A. Z. Msezane, S. A. Artamonov

In this letter, we examine how the presence of flat band leads to the formation of a high-temperature superconductor even in the case of repulsive pairing interactions. We also sho…

cond-mat.supr-con2025★ 1 cited

Scaling behavior of superconductors

V. R. Shaginyan, A. Z. Msezane, S. A. Artamonov

In our brief review, we will consider the general universal scaling properties of superconductors. The physics of superconductors, represented by both conventional and unconvention…

cond-mat.supr-con2024★ 3 cited

Common behavior of the scaled condensation energy for both high- and conventional superconductors

V. R. Shaginyan, A. Z. Msezane, S. A. Artamonov

We analyze the scaling of the condensation energy divided by , , of both conventional superconductors and unconventional high- one, where $N(…

cond-mat.str-el2021★ 1 cited

Ultra spin liquid in

V. R. Shaginyan, A. Z. Msezane, S. A. Artamonov +2

We analyze measurements of , specific heat divided by temperature , of the recently observed ultra spin liquid. The measurements are carried out in…

cond-mat.str-el2019★ 17 cited

Fermion condensation, -linear resistivity and Planckian limit

V. R. Shaginyan, M. Ya. Amusia, A. Z. Msezane +3

We explain recent challenging experimental observations of universal scattering rate related to the linear-temperature resistivity exhibited by a large corps of both strongly corre…

cond-mat.str-el2010★ 7 cited

Energy scales and the non-Fermi liquid behavior in YbRh2Si2

V. R. Shaginyan, M. Ya. Amusia, K. G. Popov +1

Multiple energy scales are detected in measurements of the thermodynamic and transport properties in heavy fermion metals. We demonstrate that the experimental data on the energy s…

cond-mat.str-el2007★ 2 cited

Universal behavior of Ferromagnet at Quantum Critical Point

V. R. Shaginyan, K. G. Popov, S. A. Artamonov

The heavy-fermion metal can be tuned from ferromagnetism at to non-magnetic state at some critical concentration . The non-Fermi liquid behavior (NF…

cond-mat.str-el2005★ 3 cited

Hall coefficient in heavy fermion metals

V. R. Shaginyan, K. G. Popov, S. A. Artamonov

Experimental studies of the antiferromagnetic (AF) heavy fermion metal in a magnetic field indicate the presence of a jump in the Hall coefficient at a magneti…

cond-mat.str-el2001★ 9 cited

Theory of high-T_c superconductivity based on the fermion-condensation quantum phase transition

M. Ya. Amusia, S. A. Artamonov, V. R. Shaginyan

A theory of high temperature superconductivity based on the combination of the fermion-condensation quantum phase transition and the conventional theory of superconductivity is pre…

cond-mat.str-el2000★ 10 cited

Quasiparticles in a strongly correlated liquid with the fermion condensate: applications to high-temperature superconductors

S. A. Artamonov, V. R. Shaginyan

A model of a strongly correlated electron liquid based on the fermion condensation (FC) is extended to high-temperature superconductors. Within our model, the appearance of FC pres…

cond-mat.str-el1998★ 35 cited

Ground state instability in systems of strongly interacting fermions

S. A. Artamonov, Yu. G. Pogorelov, V. R. Shaginyan

We analyze stability of a fermion system with model repulsive pair interaction potential. The possibility for different types of restructuring of the Fermi ground state (at suffici…