Kirill A. Bokai
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View article: Electronic structure of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:msub><mml:mi>Mn</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Pb</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:mo>)</mml:mo></mml:mrow><mml:msub><mml:mi>Bi</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Te</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>: Experimental evidence of topological phase transition
Electronic structure of : Experimental evidence of topological phase transition Open
The investigation of methods to control and optimize the physical properties of the intrinsic magnetic topological insulator (TI) MnBi2Te4 is a critical challenge for the development of functional materials for quantum technologies and spi…
View article: Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo<sub>2</sub>P<sub>2</sub>
Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo<sub>2</sub>P<sub>2</sub> Open
Studying and understanding many‐body interactions, particularly electron‐boson interactions, is essential for a deeper elucidation of fundamental physical phenomena and the development of novel material functionalities. Here, this aspect i…
View article: The electronic structure of Mn$_{1-x}$Pb$_x$Bi$_2$Te$_4$: experimental evidence of topological phase transition
The electronic structure of Mn$_{1-x}$Pb$_x$Bi$_2$Te$_4$: experimental evidence of topological phase transition Open
This study investigates methods for controlling the physical properties of the intrinsic magnetic topological insulator MnBi$_2$Te$_4$ (MBT) by substituting Mn with Pb in Mn$_{1-x}$Pb$_x$Bi$_2$Te$_4$ (MPBT) solid solutions. This substituti…
View article: Gate-controlled proximity effect in superconductor/ferromagnet van der Waals heterostructures
Gate-controlled proximity effect in superconductor/ferromagnet van der Waals heterostructures Open
The discovery of 2D materials opens up unprecedented opportunities to design new materials with specified properties. In many cases, the design guiding principle is based on one or another proximity effect, i.e., the nanoscale-penetration …
View article: Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4
Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4 Open
The ability to finely tune the properties of magnetic topological insulators (TIs) is crucial for quantum electronics. We studied solid solutions with a general formula Ge x Mn 1-x Bi 2 Te 4 between two isostructural Z 2 TIs, magnetic MnBi…
View article: Gate-controlled proximity effect in superconductor/ferromagnet van der Waals heterostructures
Gate-controlled proximity effect in superconductor/ferromagnet van der Waals heterostructures Open
The discovery of 2D materials opens up unprecedented opportunities to design new materials with specified properties. In many cases, the design guiding principle is based on one or another proximity effect, i.e. the nanoscale-penetration o…
View article: Magnetism, heat capacity and electronic structure of EuCd$_2$P$_2$ in view of its colossal magnetoresistance
Magnetism, heat capacity and electronic structure of EuCd$_2$P$_2$ in view of its colossal magnetoresistance Open
The mechanism of the peculiar transport properties around the magnetic ordering temperature of semiconducting antiferromagnetic EuCd$_2$P$_2$ is not yet understood. With a huge peak in the resistivity observed above the Néel temperature, $…
View article: Origin of Giant Rashba Effect in Graphene on Pt/SiC
Origin of Giant Rashba Effect in Graphene on Pt/SiC Open
Intercalation of noble metals can produce giant Rashba-type spin–orbit splittings in graphene. The spin–orbit splitting of more than 100 meV has yet to be achieved in graphene on metal or semiconductor substrates. Here, we report the p-typ…
View article: Origin of Giant Rashba Effect in Graphene on Pt/SiC
Origin of Giant Rashba Effect in Graphene on Pt/SiC Open
Intercalation of noble metals can produce giant Rashba-type spin-orbit splittings in graphene. The spin-orbit splitting more than 100 meV has not yet been achieved in graphene on a metallic or a semiconductor substrate. Here, we report the…
View article: Evolution of Mn1−xGexBi2Te4 Electronic Structure under Variation of Ge Content
Evolution of Mn1−xGexBi2Te4 Electronic Structure under Variation of Ge Content Open
One of the approaches to manipulate MnBi2Te4 properties is the magnetic dilution, which inevitably affects the interplay of magnetism and band topology in the system. In this work, we carried out angle-resolved photoemission spectroscopy (…
View article: Magnetic Dirac semimetal state of (Mn,Ge)Bi$_2$Te$_4$
Magnetic Dirac semimetal state of (Mn,Ge)Bi$_2$Te$_4$ Open
For quantum electronics, the possibility to finely tune the properties of magnetic topological insulators (TIs) is a key issue. We studied solid solutions between two isostructural Z$_2$ TIs, magnetic MnBi$_2$Te$_4$ and nonmagnetic GeBi$_2…
View article: Effect of gold intercalation on the electronic structure of graphene on Co-Si/SiC(0001)
Effect of gold intercalation on the electronic structure of graphene on Co-Si/SiC(0001) Open
Graphene grown on an ultrathin CoSi/CoSi 2 silicide layer atop a SiC(0001) substrate and intercalated by Au was studied. Intercalation of Au was found to occur at a temperature of 500 o C, and it is accompanied by the formation of gold sil…
View article: Влияние интеркаляции золота на электронную структуру графена на Co-Si/SiC(0001)
Влияние интеркаляции золота на электронную структуру графена на Co-Si/SiC(0001) Open
Investigation of graphene on an ultrathin CoSi/CoSi2 cobalt silicide layer on a SiC(0001) substrate after the Au intercalation has been carried out. It was shown that deposition of Au and subsequent annealing of the system at a temperature…
View article: Photoelectron diffraction for probing valency and magnetism of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>4</mml:mn><mml:mi>f</mml:mi></mml:mrow></mml:math>-based materials: A view on valence-fluctuating <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>EuIr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Si</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
Photoelectron diffraction for probing valency and magnetism of -based materials: A view on valence-fluctuating Open
We present and discuss the methodology for modeling 4f photoemission spectra, 4f photoelectron diffraction (PED) patterns, and magnetic dichroism effects for rare-earth-based materials. Using PED and magnetic dichroism in photoemission, we…
View article: Raman spectroscopy estimation of the carrier concentration and the value of strain in monolayer graphene films grown on 4H-SiC
Raman spectroscopy estimation of the carrier concentration and the value of strain in monolayer graphene films grown on 4H-SiC Open
Comprehensive study of high-quality monolayer graphene samples grown by thermal destruction of the Si-face of the 4 H -SiC substrate was carried out. Analysis of the data obtained by Raman spectroscopy and angle-resolved photoemission spec…
View article: Site- and spin-dependent coupling at the highly ordered <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>h</mml:mi></mml:math>-BN/Co(0001) interface
Site- and spin-dependent coupling at the highly ordered -BN/Co(0001) interface Open
Using photoelectron diffraction and spectroscopy, we explore the structural and electronic properties of the hexagonal boron nitride (h-BN) monolayer epitaxially grown on the Co(0001) surface. Perfect matching of the lattice parameters all…
View article: Variation of the character of spin-orbit interaction by Pt intercalation underneath graphene on Ir(111)
Variation of the character of spin-orbit interaction by Pt intercalation underneath graphene on Ir(111) Open
The modification of the graphene spin structure is of interest for novel possibilities of application of graphene in spintronics. The most exciting of them demand not only high value of spin-orbit splitting of the graphene states, but non-…