Dimitri Roditchev

Selective band engineering of Bi/Si(111) by boron segregation

E. Barre, Jose D. J. Villalobos-Castro, Thomas Pierron, Stéphane Pons et autres

Atomically thin layers of metals deposited on semiconductors display a variety of physical properties such as superconductivity, charge density waves, topological phases, strong spin-orbit (Rashba) splitting, among others. To access these exotic phases and induce new ones, it is necessary to control …

fr (code pays fourni par la source)

Magnetic force microscopy versus scanning quantum-vortex microscopy: Probing pinning landscape in granular niobium films

A. Yu. Aladyshkin, Razmik A. Hovhannisyan, Sergey Grebenchuk, S. A. Larionov et autres

We provide an overview of the methodology and fundamental principles associated with newly developed experimental technique -- scanning quantum-vortex microscopy. This approach appears promising for experimental studies of vortex pinning phenomena in superconducting films and nanodevices. In particular, we studied the magnetic …

ru, fr (code pays fourni par la source)

Nernst effect and its thickness dependence in superconducting NbN films

Thomas Bouteiller, Arthur Marguerite, Ramzy Daou, Dmitry S. Yakovlev et autres

International audience

fr (code pays fourni par la source)

Selective band engineering of Bi/Si(111) by boron segregation

Elyse Barré, J. Villalobos-Castro, Thomas Pierron, Stéphane Pons et autres

Atomically thin layers of metals deposited on semiconductors display a variety of physical properties such as superconductivity, charge density waves, topological phases, strong spin-orbit (Rashba) splitting, among others. To access these exotic phases and induce new ones, it is necessary to control …

fr (code pays fourni par la source)

Magnetic force microscopy versus scanning quantum-vortex microscopy: Probing pinning landscape in granular niobium films

A. Yu. Aladyshkin, Razmik A. Hovhannisyan, Sergey Grebenchuk, S. A. Larionov et autres

We provide an overview of the methodology and fundamental principles associated with newly developed experimental technique -- scanning quantum-vortex microscopy [Hovhannisyan et al., Commun. Mater., vol. 6, 42 (2025)]. This approach appears promising for experimental studies of vortex pinning phenomena in superconducting …

Twin boundary formation in Pb thin film under conditions of the quantum confinement effect

Sergey I. Bozhko, A. S. Ksenz, D. A. Fokin, Dimitri Roditchev et autres

ru, fr (code pays fourni par la source)

Electronic and Magnetic Properties of Fe-DPyDBrPP Molecules on Au(111) and Pb(110) Surfaces

Yingzheng Gao, Sergio Vlaic, Tommaso Gorni, Luca de’ Medici et autres

International audience

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Manipulation of the Magnetic State of Fe-DPyDBrPP molecules on Gold: From Kondo to Quantum Nanomagnet via the Charge Fluctuation Regime

Yingzheng Gao, Sergio Vlaic, Tommaso Gorni, Luca de’ Medici et autres

International audience

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Dynamic metastable vortex states in interacting vortex lines

Sergei N. Kozlov, Jérôme Lesueur, Dimitri Roditchev, C. Feuillet-Palma

Abstract The electron transport in current-biased superconducting nano-bridges is determined by the motion of the quantum vortex confined in the internal disorder landscape. Here we consider theoretically a simple case of a single or two neighbouring linear defects crossing a nano-bridge. The …

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Spin-orbit induced splitting in two-dimensional Dirac Cones in single and double antimony layers on Au(111)

Thomas Pierron, Dan Wang, Stéphane Pons, Dimitri Roditchev et autres

International audience

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Manipulation de l’état magnétique d’une molécule à base de porphyrine sur une surface d’or

Yingzheng Gao, Sergio Vlaic, Tommaso Gorni, Luca de’ Medici et autres

International audience

fr (code pays fourni par la source)

Scanning quantum vortex microscopy reveals thickness-dependent pinning nano-network in superconducting Nb-films

Razmik A. Hovhannisyan, Sergey Grebenchuk, Andrey Yu. Shishkin, Artem K. Grebenko et autres

The presence of quantum vortices determines the electromagnetic response of superconducting materials and devices. Controlling the vortex motion, their pinning on intrinsic and artificial defects is therefore essential for superconducting electronics. Here we take advantage of the attractive force between a magnetic …