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## Charge Density and Mobility of Charge Density Waves in the Quasi-One-Dimensional Conductor NbS3

JETP Letters. 2023. Vol. 117. No. 2. P. 157-163.

Zybtsev n., Pokrovskii V. Y., Nikonov n., Maizlakh n., Zaitsev-Zotov S.

Three charge density waves (CDWs), two of which are formed above room temperature, are observed in the NbS3 monoclinic phase (NbS3-II). The charge density and mobility in the high-field limit have been determined for each of three CDWs in this work using the synchronization effect of CDWs in high-frequency fields. It has been found that the mobility of each CDW in this limit is approximately equal to the normal-state mobility of quasiparticles condensed in it. Furthermore, correlation has been observed between the temperature dependences of mobilities of CDWs and quasiparticles. The results of this work refresh problems of a mechanism of the limit conductivity of CDWs and of the distribution of CDWs between atomic chains in the unit cell.

Yakushkina T., Saakian D., Physica A: Statistical Mechanics and its Applications 2018 Vol. 507 P. 470-477

In this paper, the impact of lethal mutations on evolutionary dynamics of asexual populations is analyzed. We suggest distinguishing different definitions of lethality, which lead to different mathematical formalizations of the microscopic model. Most of the studies focus on polyphasic lethality, meaning that individuals carrying lethal mutations have no offspring but consume common resources. In ...

Added: June 22, 2018

Zybtsev S., Pokrovskii V., Nasretdinova V. et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 99 Article 235155

We report studies of the Seebeck coefficient S of the quasi-one-dimensional compound NbS3, together with the temperature dependence of its specific conductivity σs and heat capacity cp. The monoclinic phase (NbS3-II) is studied over the temperature range T = 80–400 K, which covers two charge density wave (CDW) transitions at TP1 = 360 K (CDW-1) and TP2 = 150 K (CDW-2). The S(T ) curves show features in the vicinities of ...

Added: October 29, 2021

Rakhmanov A. L., Sboychakov A. O., Kugel K. et al., Physical Review B: Condensed Matter and Materials Physics 2018 Vol. 98 No. 15 P. 155141-1-155141-13

Half-metals have fully spin-polarized charge carriers at the Fermi surface. Such polarization usually occurs due to strong electron-electron correlations. Recently [Phys. Rev. Lett. 119, 107601 (2017)] we have demonstrated theoretically that adding (or removing) electrons to systems with Fermi surface nesting also stabilizes
the half-metallic states even in the weak-coupling regime. In the absence of doping, the ground ...

Added: October 28, 2018

Abdel-Hafiez M., Thiyagarajan R., Majumdar A. et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 99 Article 235126

We report the evolution of charge density wave states under pressure for two NbS3 phases: triclinic (phase I) and monoclinic (phase II) at room temperature. Raman and x-ray diffraction (XRD) techniques are applied. The x-ray studies on the monoclinic phase under pressure show a compression of the lattice at different rates below and above ∼7 GPa but ...

Added: October 29, 2021

Tyutnev A., Ихсанов Р. Ш., Grach E. et al., Высокомолекулярные соединения. Серия А 2013 Т. 55 № 2 С. 191-200

Abstract — The effect of charged centers on charge-carrier mobility in polycarbonate, a polar molecularly doped polymer, is studied. The nature of this effect is revealed, and a simplified physicomathematical model is proposed to describe it. The performed numerical calculations are qualitatively consistent with experimental results. Preliminary studies are conducted to elucidate the nature of ...

Added: April 15, 2013

Kugel K., Rakhmanov A. L., Rozhkov A. V. et al., Physical Review Letters 2017 Vol. 119 No. 10 P. 107601-1-107601-6

Half-metallicity (full spin polarization of the Fermi surface) usually occurs in strongly correlated electron systems. We demonstrate that doping a spin-density wave insulator in the weak-coupling regime may also stabilize half-metallic states. In the absence of doping, the spin-density wave is formed by four nested bands [i.e., each band is characterized by charge (electron or ...

Added: October 17, 2017

A.P. Tyutnev, V.S. Saenko, Chemical Physics 2017 Vol. 483–484 P. 172-176

We have examined the Poole-Frenkel mobility field dependence in a molecularly doped polymer (MDP) both experimentally and theoretically trying to separate two physically different contributions to this phenomenon, one constituting a real physical effect and the other arising from the fact that the charge carrier transport in MDP is not fully equilibrated. The former is ...

Added: January 27, 2017

Gordeev I., Kolotova L., Starikov S., Scripta Materialia 2022 Vol. 210 Article 114481

The mechanism of Al-Si alloy crystallization from an amorphous state is still unclear. Despite the absence of equilibrium compounds for this binary system, there are several experimental evidences confirming the formation of metastable silicide at annealing of amorphous Si mixed with Al. Classification of this metastable structure is a missing puzzle piece in the description ...

Added: January 28, 2022

Strogankova N. I., М. : РИО МИЭМ НИУ ВШЭ, 2012

Описана методика расчета равновесных электрофизических параметров твердых тел и приведены справочные данные, необходимые для выполнения курсовых работ по дисциплине "Физика конденсированного состояния". ...

Added: February 17, 2014

Maslov V., Russian Journal of Mathematical Physics 2012 Vol. 19 No. 4 P. 485-499

It is shown that the Boltzmann-Maxwell distribution is not applicable to the generalized notion of ideal gas and corresponds to this ideal gas at low density only. The behavior of an ideal gas and its transition to liquid is studied as a result of a kind of generalization of the problem of “partitio numerorum”. The ...

Added: January 17, 2013

Chertenkov V., Shchur L., Journal of Physics: Conference Series 2021 Vol. 1740 P. 1-5

We formulate the problem of the universality class investigation using machine learning. We chose an example of the universality class of the two-dimensional 4-state Potts model. There are four known models within the universality class – the 4-state Potts model, the Baxter-Wu model, the Ashkin-Teller model, and the Turban model. All four of them together ...

Added: February 19, 2021

Utesov O., Physical Review B: Condensed Matter and Materials Physics 2022 Vol. 105 Article 054435

A simple mean-field description of frustrated antiferromagnets on hexagonal lattices, aimed to describe the
high-temperature part of the temperature-magnetic field phase diagram, is proposed. It is shown that an interplay
between modulation vector symmetry, Zeeman energy, and magnetodipolar interaction leads to stabilization of
the triple-Q skyrmion lattice in a certain region of the phase diagram. The corresponding analytical ...

Added: March 2, 2022

Shapiro D. S., Rubtsov A. N., Remizov S. V. et al., Physical Review A: Atomic, Molecular, and Optical physics 2019 Vol. 99 No. 6 Article 063821

The analysis of single-mode photon fluctuations and their counting statistics at the superradiant phase transition is presented. The study concerns the equilibrium Dicke model in a regime where the Rabi frequency, related to a coupling of the photon mode with a finite-number qubit environment, plays the role of the transition's control parameter. We use the ...

Added: October 29, 2021

Nechaev S. K., Gorsky A., Avetisov V. A. et al., Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2017 No. 96 P. 062309-1- 062309-14

We consider the canonical ensemble of multilayered constrained Erdos-Renyi networks (CERN) and regular random graphs (RRG), where each layer represents graph vertices painted in a specific color. We study the critical behavior in such networks under changing the fugacity, µ, which controls the number of monochromatic triads of nodes. The behavior of considered systems is ...

Added: October 20, 2017

Shchur L., / Cornell University. Series arXiv "math". 2021. No. 2107.02406.

In the late 80s and 90s, theoretical physicists of
the Landau Institute for Theoretical Physics designed and
developed several specialized computers for challenging
computational problems in the physics of phase transitions.
These computers did not have a central processing unit. They
optimize algorithms to handle elementary operations on
integers - read, write, compare, and count. The approach
allowed them to achieve recording ...

Added: July 26, 2021

Ilya D. Fedorov, Vladimir V. Stegailov, ChemPhysChem 2023 Vol. 24 No. 6 Article e202200730

The transition of warm dense fluid hydrogen from an insulator to a conducting state at pressures of about 20–400 GPa and temperatures of 500–5000 K has been the subject of active scientific research over the past few decades. However, various experimental and theoretical methods do not provide consistent results. In this work, we have applied the restricted ...

Added: January 31, 2023

Astrakharchik G., Kryuchkov P., Kurbakov I. et al., Crystals 2018 Vol. 8 No. 246 P. 1-26

Ground-state properties of bosons interacting via inverse square potential (three dimensional Calogero-Sutherland model) are analyzed. A number of quantities scale with the density and can be naturally expressed in units of the Fermi energy and Fermi momentum multiplied by a dimensionless constant (Bertsch parameter). Two analytical approaches are developed: the Bogoliubov theory for weak and ...

Added: October 22, 2018

Garkul A., Stegailov V., Scientific Reports 2022 Vol. 12 No. 1 Article 13325

Unlike conventional first-order phase transitions, the kinetics of amorphous-amorphous transitions has been much less studied. The ultrasonic experiments on the transformations between low-density and high-density amorphous ice induced by pressure or heating provided the pressure and temperature dependencies of elastic moduli. In this article, we make an attempt to build a microscopic picture of these ...

Added: August 8, 2022

I.A. Cohn, S.V. Zaitsev-Zotov, Physical Review B: Condensed Matter and Materials Physics 2023 Vol. 108 No. 11 Article 115124

We demonstrate that magnetoresistance of creeping charge-density waves in the quasi-one-dimensional
conductor o-TaS 3 changes its character from a negative parabolic at T 10 K, where it obeys the 1/T 2 law
to a weakly temperature-dependent negative nearly linear one at lower temperatures. The dominant contribution into the negative parabolic magnetoresistance comes from magnetic field induced ...

Added: October 25, 2023

B. V. Andryushechkin, Pavlova T. V., Journal of Chemical Physics 2022 Vol. 156 No. 16 Article 164702

Room temperature adsorption of molecular iodine on Ag(111) has been studied by scanning tunneling microscopy (STM), low energy electron diffraction, Auger electron spectroscopy with factor analysis, and density functional theory (DFT). At the chemisorption stage, iodine first forms a (√3 ×√3)R30○ structure. Further iodine dosing leads to continuous commensurate–incommensurate phase transition, taking place via the formation of striped ...

Added: December 13, 2022

Valba O. V., Tamm M., Nechaev S., Physical Review Letters 2012 Vol. 109 P. 018102

We study the fraction f of nucleotides involved in the formation of a cactuslike secondary structure of random heteropolymer RNA-like molecules. In the low-temperature limit, we study this fraction as a function of the number c of different nucleotide species. We show, that with changing c, the secondary structures of random RNAs undergo a morphological transition:f(c)→1 for c≤ccr as the chain length n goes ...

Added: November 18, 2013

Smirnov G., Stegailov V., The Journal of Physical Chemistry Letters 2013 Vol. 3 No. 21 P. 3560-3564

Recently, a new phase of hydrogen hydrates has been observed at ∼5−7 kbar and ∼170−250 K. X-ray diffraction patterns do not allow determination of its structure unambiguously. In this work, we perform classical molecular dynamics simulation of hydrogen hydrates and select two possible structures. One of these structures is not a typical clathrate and has ...

Added: March 19, 2014

Nechaev S., Tamm M., Valba O. V. et al., Journal of Statistical Mechanics: Theory and Experiment 2014 No. 12 P. 12004

In this paper, we investigate analytical properties of planar matching on a line in the disordered Bernoulli model. This model is characterized by a topological phase transition, yielding the complete planar matching solutions only above a critical density threshold. We develop a combinatorial procedure of arcs expansion that explicitly takes into account the contribution of ...

Added: October 23, 2014

Barash L., Marshall J., Weigel M. et al., / Cornell University. Series cond-mat "arxiv.org". 2018. No. 1808.04340.

Estimating the density of states of systems with rugged free energy landscapes is a notoriously difficult task of the utmost importance in many areas of physics ranging from spin glasses to biopolymers to quantum computing. Some of the standard approaches suffer from a spurious convergence of the estimates to metastable minima, and these cases are ...

Added: October 17, 2018