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Oleg Yazyev

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Related publications (147)

Page 7 of 8

Spin- and valley-polarized transport across line defects in monolayer MoS2

Oleg Yazyev, Artem Pulkin

We address the ballistic transmission of charge carriers across ordered line defects in monolayer transition metal dichalcogenides. Our study reveals the presence of a transport gap driven by spin-orbit interactions, spin and valley filtering, both stemmin ...

Amer Physical Soc2016

Two-Orbital Kondo Screening in a Self-Assembled Metal Organic Complex

Oleg Yazyev, Harald Brune, Stefano Rusponi, Marina Pivetta, Gabriel Albert Autes, Fabio Donati, Luca Gragnaniello, Giulia Elisabetta Pacchioni

Iron atoms adsorbed on a Cu(111) surface and buried under polyphenyl dicarbonitrile molecules exhibit strongly spatial anisotropic Kondo features with directionally dependent Kondo temperatures and line shapes, as evidenced by scanning tunneling spectrosco ...

American Chemical Society2017

Controlling the Quantum Spin Hall Edge States in Two-Dimensional Transition Metal Dichalcogenides

Oleg Yazyev, Artem Pulkin

Two-dimensional transition metal dichalcogenides (TMDs) of Mo and W in their 1T' crystalline phase host the quantum spin Hall (QSH) insulator phase. We address the electronic properties of the QSH edge states by means of first-principles calculations perfo ...

AMER CHEMICAL SOC2020

Spectroscopic signatures and origin of hidden order in Ba2MgReO6

Henrik Moodysson Rønnow, Oleg Yazyev, Ivica Zivkovic, Davor Tolj, Jana Pásztorová, Oleg Malanyuk

Clarifying the underlying mechanisms that govern ordering transitions in condensed matter systems is crucial for comprehending emergent properties and phenomena. While transitions are often classified as electronically driven or lattice-driven, we present ...

Nature Research2024

Magnetism induced by single-atom defects in nanographites

Lothar Helm, Oleg Yazyev

We study from first principles the magnetism in graphene induced by single carbon atom defects. For two types of defects considered in our study, the hydrogen chemisorption defect and the vacancy defect, the magnetism due to the defect-induced extended sta ...

IOP Publishing2007

Transport signatures of temperature-induced chemical potential shift and Lifshitz transition in layered type-II Weyl semimetal TaIrTe4

Oleg Yazyev, Quansheng Wu

Temperature-induced Lifshitz transitions have been identified in several materials. Their chemical potential shows a substantial shift with changing temperature. The common feature of these materials is the coexistence of electron and hole pockets in the v ...

IOP PUBLISHING LTD2021

17O nuclear quadrupole coupling constants of water bound to a metal ion: A gadolinium(III) case study

Lothar Helm, Oleg Yazyev

Rotational correlation times of metal ion aqua complexes can be detd. from 17O NMR relaxation rates if the quadrupole coupling const. of the bound water oxygen-17 nucleus is known. The rotational correlation time is an important parameter for the efficienc ...

2006

Grain Boundaries in Graphene on SiC(000(1)over-bar) Substrate

Oleg Yazyev, Fernando Gargiulo

Grain boundaries in epitaxial graphene on the SiC(000 (1) over bar) substrate are studied using scanning tunneling microscopy and spectroscopy. All investigated small-angle grain boundaries show pronounced out-of-plane buckling induced by the strain fields ...

Amer Chemical Soc2014

Defect-induced magnetism in graphene

Lothar Helm, Oleg Yazyev

We study from first principles the magnetism in graphene induced by single carbon atom defects. For two types of defects considered in our study, the hydrogen chemisorption defect and the vacancy defect, the itinerant magnetism due to the defect-induced ex ...

2007

Hydrogen Bonding of Ammonia with (H,OH)-Si(001) Revealed by Experimental and Ab Initio Photoelectron Spectroscopy

Alfredo Pasquarello, Oleg Yazyev

Combining experimental and ab initio core-level photoelectron spectroscopy (periodic DFT and quantum chemistry calculations), we elucidated how ammonia molecules bond to the hydroxyls of the (H,OH)-Si(001) model surface at a temperature of 130 K. Indeed, t ...

AMER CHEMICAL SOC2020

Core spin-polarization correction in pseudopotential-based electronic structure calculations

Ursula Röthlisberger, Lothar Helm, Oleg Yazyev, Ivano Tavernelli

A simple scheme for the evaluation of the core spin-polarization contribution within pseudopotential electronic structure methods is proposed. The method uses a reconstruction of the all-electron wave functions and the frozen valence spin-d. approxn. to so ...

2005

Quantum Chemical Investigation of Hyperfine Coupling Constants on First Coordination Sphere Water Molecule of Gadolinium(III) Aqua Complexes

Lothar Helm, Oleg Yazyev

2005

Reply to: Low-frequency quantum oscillations in LaRhIn5: Dirac point or nodal line?

Oleg Yazyev, Quansheng Wu, Philip Johannes Walter Moll, Matthias Carsten Putzke, Chunyu Guo, Shengnan Zhang, Amelia Emily-Kay Estry

Nature Portfolio2023

An upside-down magnet

Oleg Yazyev

NATURE PUBLISHING GROUP2019

Hidden bulk and surface effects in the spin polarization of the nodal-line semimetal ZrSiTe

Helmuth Berger, Arnaud Magrez, Marco Grioni, Oleg Yazyev, Alberto Crepaldi, Mauro Fanciulli, Gianmarco Gatti, Daniel Gosalbez Martinez, Silvan Dino Marcos Roth

Local inversion symmetry breaking in centrosymmetric materials can lead to large spin polarization of the electronic band structure in separate sectors of the unit cell. Here, the authors reveal such hidden spin polarisation in ZrSiTe using spin and angle ...

NATURE RESEARCH2021

Electronic properties of incommensurately modulated novel and complex materials

László Forró, Oleg Yazyev, Philip Johannes Walter Moll, Alla Arakcheeva, Ana Akrap, Sergiy Katrych, Gabriel Albert Autes, Edoardo Martino

INT UNION CRYSTALLOGRAPHY2018

Landau Levels as a Probe for Band Topology in Graphene Moire Superlattices

Oleg Yazyev, Quansheng Wu, Yifei Guan

We propose Landau levels as a probe for the topological character of electronic bands in two-dimensional moire superlattices. We consider two configurations of twisted double bilayer graphene (TDBG) that have very similar band structures, but show differen ...

AMER PHYSICAL SOC2021

Landau levels of the Euler class topology

Oleg Yazyev, Yifei Guan

Two-dimensional systems with C2T (PT) symmetry exhibit the Euler class topology E is an element of Z in each two-band subspace realizing a fragile topology beyond the symmetry indicators. By systematically studying the energy levels of Euler insulating pha ...

AMER PHYSICAL SOC2022

Polycrystalline graphene: Atomic structure, energetics and transport properties

Oleg Yazyev

Recent experimental investigations show that large-area samples of graphene tend to be polycrystalline. Physical properties of such samples are strongly affected by the presence of intrinsic topological defects of polycrystalline materials-dislocations and ...

Pergamon-Elsevier Science Ltd2012

A novel quasi-one-dimensional topological insulator in bismuth iodide beta-Bi4I4

László Forró, Marco Grioni, Oleg Yazyev, Gabriel Albert Autes, Andrea Pisoni, Luca Moreschini, Jens Christian Johannsen

Recent progress in the field of topological states of matter(1,2) has largely been initiated by the discovery of bismuth and antimony chalcogenide bulk topological insulators (TIs; refs 3-6), followed by closely related ternary compounds(7-16) and predicti ...

Nature Publishing Group2016