A5062684355- Graphene research and applications
- Physics of Superconductivity and Magnetism
- 2D Materials and Applications
- Magnetic and transport properties of perovskites and related materials
- Rare-earth and actinide compounds
- Topological Materials and Phenomena
- Advanced Condensed Matter Physics
- Quantum and electron transport phenomena
- Electronic and Structural Properties of Oxides
- Magnetic properties of thin films
- Semiconductor materials and devices
- Iron-based superconductors research
- Inorganic Chemistry and Materials
- MXene and MAX Phase Materials
- Advancements in Battery Materials
- Superconductivity in MgB2 and Alloys
- Carbon Nanotubes in Composites
- Metallurgical and Alloy Processes
- Superconducting Materials and Applications
- Multiferroics and related materials
- Magnetic Properties of Alloys
- ZnO doping and properties
- Muon and positron interactions and applications
- Advanced Chemical Physics Studies
- Ferroelectric and Negative Capacitance Devices
Kurchatov Institute
2016-2025
The appeal of ultra-compact spintronics drives intense research on magnetism in low-dimensional materials. Recent years have witnessed remarkable progress engineering two-dimensional (2D) via defects, edges, adatoms, and magnetic proximity. However, intrinsic 2D ferromagnetism remained elusive until recent discovery out-of-plane magneto-optical response Cr-based layers, stimulating the search for magnets with tunable diverse properties. Here we employ a bottom-up approach to produce layered...
Addition of magnetism to spectacular properties graphene may lead novel topological states and design spin logic devices enjoying low power consumption. A significant progress is made in defect-induced graphene—selective elimination pz orbitals (by vacancies or adatoms) at triangular sublattices tailors magnetism. Proximity a magnetic insulator less invasive way, which being actively explored now. Integration with the ferromagnetic semiconductor EuO has much offer, especially terms...
A class of intrinsic 2D ferromagnets – layered metalloxenes is established by coupling graphene-like honeycomb networks silicene and germanene with lanthanide layers.
Intrinsic 2D magnets have recently been established as a playground for studies on fundamentals of magnetism, quantum phases, and spintronic applications. The inherent instability at low dimensionality often results in coexistence and/or competition different magnetic orders. Such ordering may manifest itself phase-separated states. In 4f materials, phase separation is expressed various experiments; however, the experimental evidence circumstantial. Here, we employ high-sensitivity MFM...
Coupling to Eu makes graphene magnetic without sacrificing its intrinsic properties.
Layered magnets are stand-out materials because of their range functional properties that can be controlled by external stimuli. Regretfully, the class such compounds is rather narrow, prompting search for new members. Graphitization - stabilization layered graphitic structures in 2D limit being discussed cubic materials. We suggest phenomenon to extend beyond structures; it employed as a viable route variety Here, idea graphitization put into practice produce magnet, GdAlSi. The honeycomb...
Abstract 2D magnets are expected to give new insights into the fundamentals of magnetism, host novel quantum phases, and foster development ultra‐compact spintronics. However, scarcity often makes a bottleneck in research efforts, prompting search for magnetic systems synthetic routes. Here, an unconventional approach is adopted problem, graphenization – stabilization layered honeycomb materials limit. Tetragonal GdAlSi, stable bulk, ultrathin films gives way its counterpart graphene‐like...
Altermagnets have emerged as a class of materials combining ferromagnetic properties with vanishing net magnetization. This combination is highly promising for spintronics, especially if material can be brought to the nanoscale. However, experimental studies 2D limit altermagnets are lacking. Here, we study epitaxial films on silicon Weyl altermagnet GdAlSi ranging from more than hundred unit cells single cell. The do not show any discernible magnetic moments. Electron transport reveal...
Silicene, a Si analogue of graphene, is suggested to become versatile material for nanoelectronics. Being coupled with magnetism, it predicted be particularly suitable spintronic applications. However, experimental realization free‐standing silicene and its magnetic derivatives lacking. Fortunately, magnetism can induced into layers, in particular, by intercalation. Here, successful synthesis multilayer intercalated inherently Eu ions – compound expected exhibit both massless Dirac‐cone...
Abstract Metal-silicon junctions are crucial to the operation of semiconductor devices: aggressive scaling demands low-resistive metallic terminals replace high-doped silicon in transistors. It suggests an efficient charge injection through a low Schottky barrier between metal and Si. Tremendous efforts invested into engineering metal-silicon reveal major role chemical bonding at interface: premier contacts entail epitaxial integration silicides with Here we present epitaxially grown EuSi 2...
Abstract Buckled elemental analogs of graphene—2D‐Xenes silicene, germanene, and stanene—and their derivatives are predicted to host high‐mobility carriers. Experiments, however, have not as yet confirmed the predictions. Here, (exceeding 10 4 cm 2 V −1 s ) carriers discovered in intercalated multilayer germanene. Epitaxial films antiferromagnetic diamagnetic MGe synthesized via topochemical reactions, followed by extensive studies atomic magnetic structures. Quantum oscillations resistance...
The inherent malleability of 2D magnetism provides access to unconventional quantum phases, in particular those with coexisting magnetic orders. Incidentally, a number materials, the state bulk undergoes fundamental change when system is pushed monolayer limit. Therefore, competition states can be expected crossover region. Here, an exchange bias observed at from 3D antiferromagnetism ferromagnetism driven by monolayers metalloxene GdSi2. material constitutes stack alternating Gd and...
Silicene, a 2D honeycomb lattice of Si atoms similar to graphene, is expected be platform for nanoelectronics and home novel quantum phenomena. Unlike free-standing silicene notoriously difficult stabilize, while strong hybridization with substrates destroys its desirable properties. On the other hand, Dirac cones are effectively realized in bulk - stoichiometric ionic multilayer intercalation compound CaSi2. Besides, number new silicene-based materials synthesized employing CaSi2 as...
Intrinsic two-dimensional (2D) magnetism has been demonstrated in various materials scaled down to a single monolayer. However, the question is whether 2D extends beyond monolayer limit, chemical species formed by sparse but regular arrays of magnetic atoms. Here we show that sub-monolayer superstructures Eu atoms self-assembled on silicon surface exhibit strong signals. Robust easy-plane discovered both one- and two-dimensionally ordered structures with coverage half above. The emergence...
Abstract Layered materials exhibit a plethora of fascinating properties. The challenge is to make the into epitaxial films, preferably integrated with mature technological platforms facilitate their potential applications. Progress in this direction can establish film thickness as valuable parameter control various phenomena, superconductivity particular. Here, synthetic route films SrAlSi, layered superconducting electride, on silicon designed. A set ranging synthesized employing...
Semiconductor electronics has so far been based on the transport of charge carriers while storage information mainly relied upon collective interactions spins. A new discipline known as spintronics proposes to exploit strong mutual influence magnetic and electrical properties in semiconductors, which promise types devices computer technologies. The mechanism for such phenomena involves concept polarons---microscopic clouds magnetization composed neighboring ions---which determine most...
Metal-insulator transitions (MITs) offer new functionalities for nanoelectronics. However, ongoing attempts to control the resistivity by external stimuli are hindered strong coupling of spin, charge, orbital and lattice degrees freedom. This difficulty presents a quest materials which exhibit MIT caused single degree In archetypal ferromagnetic semiconductor EuO, magnetic orders dominate MIT. Here we report approach take doping under in this material on nanoscale: formation oxygen vacancies...
Abstract 2D magnets have emerged as a class of materials highly promising for studies quantum phenomena and applications in ultra‐compact spintronics. Current research aims at design with particular functional properties. A formidable challenge is to produce metallic monolayers: the material landscape layered magnetic systems strongly dominated by insulators; rare magnets, such Fe 3 GeTe 2 , become insulating they approach monolayer limit. Here, electron transport measurements demonstrate...
By using the methods of acoustic emission and neutron-structure analysis, effect pressure p on low-temperature phase transitions in Li Na is investigated. In Li, within investigated interval <or approximately=3 GPa, transition temperature rises with pressure, has a 9R structure. Na, contrary, suppresses transition, so that it disappears even at p=0.1-0.2 GPa but one too. The shape signals suggests presence pretransition phenomena differences kinetics Na. Calculations performed explain...
2D magnets have recently emerged as a host for unconventional phases and related phenomena. An intrinsic exchange bias effect accompanies the dimensional crossover indicating coexisting magnetic orders.