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## Temperature-dependent nonlinear Hall effect in macroscopic Si-MOS antidot array

Physical Review B: Condensed Matter and Materials Physics. 2016. Vol. 93. No. 20.

Kuntsevich A., Нунупаров М. С.

By measuring magnetoresistance and the Hall effect in a classically moderate perpendicular magnetic field in a Si-MOSFET-type macroscopic antidot array, we found a nonlinear with field, temperature- and density-dependent Hall resistivity. We argue that this nonlinearity originates from low mobility shells of the antidots with a strong temperature dependence of the resistivity and suggest a qualitative explanation of the phenomenon.

Kuntsevich A., Morgun L. A., Pudalov V., Physical Review B: Condensed Matter and Materials Physics 2013 Vol. 87 P. 205406

We study the diffusive electron-electron interaction correction to conductivity by analyzing simultaneously ρxx and ρxy for disordered 2D electron systems in Si in a tilted magnetic field. Tilting the field is shown to be a straightforward tool to disentangle spin and orbital effects. In particular, by changing the tilt angle we prove experimentally that in ...

Added: October 15, 2016

Sluchanko N., Azarevich A., Demishev S. V. et al., Physical Review B: Condensed Matter and Materials Physics 2021 Vol. 103 No. 3 Article 035117

A comprehensive study of magnetoresistance and Hall effect has been performed for the set of the single crystals of nonmagnetic metal LuB12 with the Jahn-Teller instability of the boron cage and dynamic charge stripes forming along ⟨110⟩ direction. An anomalous positive contribution to Hall effect for a particular direction of magnetic field H//[001] is found in the single crystals of LuB12 of the ...

Added: October 25, 2022

Овешников Л. Н., Нехаева Е. И., Прудкогляд В. А. et al., Письма в Журнал экспериментальной и теоретической физики 2016 Т. 104 № 9 С. 651-657

В работе исследовалась магнетопроводимость тонких пленок Bi2Se3 с защитным слоем Se, выра
щенных на подложках (111) BaF2. Наблюдаемая отрицательная магнетопроводимость в малых полях,
обусловленная эффектом слабой антилокализации, так же как и осцилляции Шубникова–де Гааза в
больших полях, определяется только перпендикулярной к плоскости пленки компонентой магнитного
поля. Полученные экспериментальные результаты могут быть разумно объяснены в предположении на
личия в исследуемых пленках ...

Added: December 6, 2016

Kuntsevich A., Рахманов А. Л., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 102 No. 15

Hall resistance Rxy is commonly suggested to be linear-in-magnetic-field B, provided the field is small. We argue here that at low temperatures this linearity is broken due to weak localization/antilocalization phenomena in inhomogeneous systems, while in a uniform medium the linear-in-field dependence of Rxy(B) is preserved. We calculate the Hall resistance for different two-component media using a mean-field approach and ...

Added: June 17, 2022

Kuntsevich A., Миньков Г. М., Physical Review B: Condensed Matter and Materials Physics 2018 Vol. 97 No. 19

The phase of quantum magneto-oscillations is often associated with the Berry phase and is widely used to argue in favor of topological nontriviality of the system (Berry phase 2πn+π). Nevertheless, the experimentally determined value may deviate from 2πn+π arbitrarily, therefore more care should be made analyzing the phase of magneto-oscillations to distinguish trivial systems from nontrivial. In this ...

Added: June 17, 2022

Minkov G. M., Rut О. Е., Sherstobitov A. A. et al., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 101 No. 24 P. 1-7

In the present paper we study magneto-intersubband oscillations (MISO) in HgTe/Hg1−xCdxTe single quantum well with "inverted" and "normal" spectra and in conventional In1−xGaxAs/In1−yAlyAs quantum wells with normal band ordering. For all the cases when two branches of the spectrum arise due to spin-orbit splitting, the mutual arrangement of the antinodes of the Shubnikov-de Haas oscillations ...

Added: November 13, 2020

Krasikov K., Glushkov V., Demishev S. et al., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 102 No. 21 P. 1-6

Precise angle-resolved magnetoresistance (ARM) measurements are applied to reveal the origin of symmetry
lowering in electron transport and the emergence of a huge number of magnetic phases in the ground state of the
antiferromagnetic metal HoB12 with fcc crystal structure. By analyzing the polar H-θ-ϕ magnetic phase diagrams
of this compound reconstructed from the experimental ARM data, we ...

Added: February 1, 2021

Rakitskii M. A., Denisov K. S., Rozhansky I. V. et al., Applied Physics Letters 2021 Vol. 118 Article 032105

In this paper, we argue that the electron skew scattering on paramagnetic impurities in non-magnetic systems, such as bulk semiconductors, possesses a remarkable fingerprint, allowing us to differentiate it directly from other microscopic mechanisms of the emergent Hall response. We demonstrate theoretically that the exchange interaction between the impurity magnetic moment and mobile electrons leads ...

Added: October 21, 2021

Raju M., Petrović A. P., Yagil A. et al., Nature Communications 2021 No. 12 Article 2758

The topological Hall effect is used extensively to study chiral spin textures in various materials. However, the factors controlling its magnitude in technologically-relevant thin films remain uncertain. Using variable-temperature magnetotransport and real-space magnetic imaging in a series of Ir/Fe/Co/Pt heterostructures, here we report that the chiral spin fluctuations at the phase boundary between isolated skyrmions ...

Added: October 21, 2021

V. N. Glazkov, Ginzburg L., A. Orlov, American Journal of Physics 2017 Vol. 85 No. 6 P. 473-477

The Wiedemann-Franz law, a prediction of the electronic theory of electrical and thermal conduction in metals, states that the Lorenz number L = κ/σT, where κ, σ, and T are the thermal conductivity, electrical conductivity, and absolute temperature, respectively, is a universal constant in certain cases. We present here a simple experimental setup to verify this prediction ...

Added: December 15, 2018

Glushkov V. V., Лобанова И. И., Иванов В. Ю. et al., Physical Review Letters 2015 Vol. 115 No. 25 P. 256601-1-256601-6

Separating between the ordinary Hall effect and anomalous Hall effect in the paramagnetic phase of Mn1−xFexSi reveals an ordinary Hall effect sign inversion associated with the hidden quantum critical (QC) point x ∼ 0.11. The effective hole doping at intermediate Fe content leads to verifiable predictions in the field of fermiology, magnetic interactions, and QC ...

Added: February 25, 2017

Durnev M. V., Physical Review B: Condensed Matter and Materials Physics 2021 Vol. 104 Article 085306

We study theoretically transverse photoconductivity induced by circularly polarized radiation, i.e., the photovoltaic Hall effect, and linearly polarized radiation causing intraband optical transitions in the two-dimensional electron gas (2DEG). We develop a microscopic theory of these effects based on the analytical solution of the Boltzmann equation for arbitrary electron spectrum and scattering mechanisms. We calculate ...

Added: October 21, 2021

Ya. I. Rodionov, K. I. Kugel, Aronzon B. A., Physical Review B: Condensed Matter and Materials Physics 2023 Vol. 107 No. 15 Article 155120

We study the effects of strong Coulomb disorder on the transverse magnetoresistance in Weyl semimetals at low temperatures. Using the diagrammatic technique and the Keldysh model to sum up the leading terms in the diagrammatic expansion, we find that the linear magnetoresistance exhibits a strong renormalization due to the long-range nature of the Coulomb interaction ρ_xx ∝ Hln(eHℏv^2/cT^2_imp), ...

Added: May 3, 2023

I. M. Doludenko, Volchkov I. S., Turenko B. A. et al., Materials Chemistry and Physics 2022 Vol. 287 Article 126285

In the following work by means of matrix synthesis the nanowire arrays of Fe–Ni alloy with elemental compo
sition close to permalloy (Fe0⋅20Ni0.80) were obtained. In capacity of matrix the polyethylene terephthalate (PET)
track membranes with angular distribution of pores within the range of ±30◦ and the diameter of pores in 100
nm were used. As a result, ...

Added: December 6, 2023

Kovaleva N. N., Kusmartsev F. V., Mekhiya A. B. et al., Scientific Reports 2020 Vol. 10 P. 21172

Localisation phenomena in highly disordered metals close to the extreme conditions determined by the Mott-Ioffe-Regel (MIR) limit when the electron mean free path is approximately equal to the interatomic distance is a challenging problem. Here, to shed light on these localisation phenomena, we studied the dc transport and optical conductivity properties of nanoscaled multilayered films ...

Added: December 7, 2020

Demishev S. V., Krasnorussky V., Bogach A. et al., Scientific Reports 2017 Vol. 7 P. 17430-1-17430-8

Spatial anisotropy generated spontaneously in the translationally invariant metallic phase, i.e. electron nematic efect, addresses a great challenge for both experimentalists and theoreticians. An interesting option for the realization of the electron nematic phase is provided by the system with orbital ordering, as long as both orbitally ordered states and electron nematic phases possess broken ...

Added: March 10, 2018

A. Yu. Kuntsevich, Shupletsov A. V., Rakhmanov A. L., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 102 No. 15 P. 155426

Hall resistance Rxy is commonly suggested to be linear-in-magnetic-field B, provided the field is small. We argue here that at low temperatures this linearity is broken due to weak localization/antilocalization phenomena in inhomogeneous systems, while in a uniform medium the linear-in-field dependence of Rxy(B) is preserved. We calculate the Hall resistance for different two-component media using a mean-field approach and ...

Added: November 12, 2020

Melnikov I. E., Wave Motion 2024 Vol. 130 Article 103380

Non-reflective wave propagation is of great importance for applications because it allows energy to be transmitted over long distances. The paper discusses the method of reducing the equations of the linear theory of shallow water to a wave equation with a variable coefficient in the form of an inverse hyperbolic sine, the solution of which ...

Added: July 10, 2024

Aladyshkin A. Y., Aladyshkina A. S., Bozhko S., Journal of Physical Chemistry C 2021 Vol. 125 No. 48 P. 26814-26822

Local electronic properties of quasi-two-dimensional Pb(111) islands with screw dislocations of different types on their surfaces were experimentally studied by means of low-temperature scanning tunneling microscopy and spectroscopy in the regime of constant current. A comparison of the topography map, the maps of tunneling current variation, and the differential tunneling conductance acquired simultaneously allows one ...

Added: December 6, 2021

Khoroshilov A. L., Azarevich A. N., Bogach A. V. et al., JETP Letters 2021 Vol. 113 No. 8 P. 526-531

Detailed measurements of the Hall effect in the paramagnetic phase of Ho0.8Lu0.2B12 antiferromagnet at the magnetic field up to 80 kOe in the temperature range of 1.9-300 K have been performed. It has been found that the transition to the cage glass phase (T < T * ~ 60 K) is accompanied by the appearance of ...

Added: October 25, 2022

Kuntsevich A., Shupletsov A. V., Nunuparov M. S., Physical Review B: Condensed Matter and Materials Physics 2016 Vol. 93 P. 205407

By measuring magnetoresistance and the Hall effect in a classically moderate perpendicular magnetic field in a Si-MOSFET-type macroscopic antidot array, we found a nonlinear with field, temperature- and density-dependent Hall resistivity. We argue that this nonlinearity originates from low mobility shells of the antidots with a strong temperature dependence of the resistivity and suggest a ...

Added: October 15, 2016

V. V. Demidov, Applied Magnetic Resonance 2021 Vol. 52 No. 7 P. 797-803

The presented work shows the reality of recording anisotropic magnetoresistance signal in thin ferromagnetic films with uniaxial in-plane magnetic anisotropy under pseudoresonance conditions. Experimental data and calculations based on the Landau–Lifshitz–Hilbert equation demonstrate the ability of this technique to switch the signal sign by imposing an external constant magnetic field of ~ 1 Oe. ...

Added: December 10, 2022

Ioselevich A., JETP Letters 2015 Vol. 101 No. 5 P. 358-363

We consider magnetic oscillations of resistivity of a clean (mean free path <img />) hollow cylinder with fluctuating (with an amplitude of fluctuations <img />) radius R, threaded by magnetic flux Φ. We demonstrate, that for weak fluctuations (<img />) the oscillations have a standard period 2Φ0, characteristic for oscillations in a clean system, while ...

Added: October 19, 2016

Merkulov O. V., Shamsutov I. V., Ryzhkov M. A. et al., Journal of Alloys and Compounds 2023

Crystal structure and thermoelectric characteristics of the donor-doped CaMnO3–δ are
significantly affected by doping elements and by oxygen exchange with ambient air occurring at
temperatures above 700 K. To investigate the role of dopants and oxygen nonstoichiometry in
thermoelectric phenomena, polycrystalline Ca0.95Bi0.025Y0.025MnO3–δ was synthesized and the
obtained temperature dependences of thermal and electronic parameters were studied by DFT
calculation method. ...

Added: March 29, 2023