A5091758560- Organic and Molecular Conductors Research
- Physics of Superconductivity and Magnetism
- Molecular Junctions and Nanostructures
- Quantum and electron transport phenomena
- 2D Materials and Applications
- Electronic and Structural Properties of Oxides
- Iron-based superconductors research
- Mechanical and Optical Resonators
- Solid-state spectroscopy and crystallography
- High-pressure geophysics and materials
- Acoustic Wave Resonator Technologies
- Force Microscopy Techniques and Applications
- Magnetism in coordination complexes
- Superconducting Materials and Applications
- Machine Learning in Materials Science
- Theoretical and Computational Physics
- Semiconductor materials and interfaces
- Rare-earth and actinide compounds
- Semiconductor materials and devices
- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor Quantum Structures and Devices
- Chalcogenide Semiconductor Thin Films
- MXene and MAX Phase Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Thermal Expansion and Ionic Conductivity
Institute of Radio-Engineering and Electronics
2015-2024
M.N. Mikheev Institute of Metal Physics
2022
Russian Academy of Sciences
1996-2014
University of Exeter
2001
Development Agency of Serbia
1997
Centre National de la Recherche Scientifique
1994
Recent results (some previously unpublished) on the physics of charge density waves (CDWs) are reviewed. The synthesis conditions and unique properties quasi-one- dimensional compound NbS3, with highly coherent room tem- perature CDWs, described. A peculiar type 'quantiza- tion' is discussed, which observed in micro- nanosamples K0:3MoO3 NbSe3 due to discrete nature CDW wave vector values. electric-field-induced torsional strain (TS) quasi-one-dimensional conductors considered. Re- search TS...
We review the features of charge density wave (CDW) conductor $\mathrm{Nb}{\mathrm{S}}_{3}$ (phase II) and include several additional results from transport, compositional, structural studies. Particularly, we highlight three central results: (1) In addition to previously reported CDW transitions at ${T}_{\mathrm{P}1}=360\phantom{\rule{0.16em}{0ex}}\mathrm{K}$ ${T}_{\mathrm{P}2}=150\phantom{\rule{0.16em}{0ex}}\mathrm{K}$, a third transition occurs much higher temperature...
The basic and the charge density wave (CDW) structures of monoclinic ${\mathrm{NbS}}_{3}$-II polymorph were studied by synchrotron x-ray diffraction, ab initio calculations, simulation electron diffraction patterns, atomic-resolution transmission low-temperature scanning tunneling microscopies. It is confirmed that structure belongs to space group $P{2}_{1}/m$ described with a unit cell, formed four pairs symmetry-related trigonal prismatic (TP) columns...
Transition metal trichalcogenides (TMTCs) offer remarkable opportunities for tuning electronic states through modifications in chemical composition, temperature, and pressure. Despite considerable interest TMTCs, there remain significant knowledge gaps concerning the evolution of their properties under compression. In this study, we employ experimental theoretical approaches to comprehensively explore high-pressure behavior TiS3, a quasi-one-dimensional (Q1D) semiconductor, across various...
Whiskers of the quasi-one-dimensional conductor NbS3, phase II, have been synthesized. The samples show two charge-density wave (CDW) states: below 360 and 150 K. Both CDWs sharp threshold fields coherent transport revealed by ac-dc coupling, i.e., Shapiro steps. thinnest (cross sections 104 nm2) exhibit steps for frequencies at least as high 4 GHz room temperature. results indicate that, each CDW states, only one Nb chain per unit cell participates in transport.
We find that electric current $I$ exceeding the threshold value results in torsion deformation of o-TaS$_3$ samples with one contact freely suspended. The rotation angle, $\delta \phi$, free end achieves several degrees and exhibits hysteresis as a function $I$. sign \phi$ depends on polarity; polar axis along conducting chains (the {\it c}-axis) is pointed out. associate effect surface shear charge-density waves (CDW) coupled to crystal shear. current-induced torsional strain could be...
An original interferometer-based setup for measurements of length needlelike samples is developed, and thermal expansion $o\ensuremath{-}{\mathrm{TaS}}_{3}$ crystals studied. Below the Peierls transition temperature hysteresis $L$ observed, width loop $\ensuremath{\delta}L/L$ being up to $5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. The behavior anomalous: changes so that it in front its equilibrium value. couples with conductivity. With lowering down 100 K charge-density...
We show that rf irradiation drastically increases coherence of the charge-density wave (CDW) depinning and sliding in electric field for NbS${}_{3}$ (phase II), TaS${}_{3}$, (TaSe${}_{4}$)${}_{2}$I. The effect is observed range CDW currents at which fundamental frequencies are well below frequency irradiation. result evident from shape $I$-$V$ curves, Shapiro steps, noise spectra. treat terms rf-assisted relaxation metastable states forming sliding. can be helpful experiments, where utmost...
We report studies of the Seebeck coefficient $S$ quasi-one-dimensional compound $\mathrm{Nb}{\mathrm{S}}_{3}$, together with temperature dependence its specific conductivity ${\ensuremath{\sigma}}_{\mathrm{s}}$ and heat capacity ${c}_{p}$. The monoclinic phase $(\mathrm{Nb}{\mathrm{S}}_{3}$-II) is studied over range $T=80--400$ K, which covers two charge density wave (CDW) transitions at ${T}_{\mathrm{P}1}=360$ K (CDW-1) ${T}_{\mathrm{P}2}=150$ (CDW-2). $S(T)$ curves show features in...
We report studies of low-field conductivity, \ensuremath{\sigma}, nanosized samples orthorhombic $\mathrm{Ta}{\mathrm{S}}_{3}$ as a function strain, \ensuremath{\epsilon}. The \ensuremath{\sigma}(\ensuremath{\epsilon}) curves show steplike changes associated with the ``quantization'' wave vector, $q$, charge-density wave. Based on effect we have revealed change $q$-vector strain: its in-chain component (normalized by reciprocal lattice constant) is found to increase sample stretch. A similar...
The sliding of the room-temperature charge density wave (CDW) in monoclinic phase $\mathrm{Nb}{\mathrm{S}}_{3}$ under rf power is studied. threshold field, ${E}_{\mathrm{t}}$, and Shapiro steps' width, \ensuremath{\delta}E, show aperiodic Bessel-type oscillations as a function voltage. Here we demonstrate experimentally that, if presented CDW path length each half period voltage, ${E}_{\mathrm{t}}$ \ensuremath{\delta}E periodic oscillations, being equal to wavelength. result found be...