A5090121220- Electronic and Structural Properties of Oxides
- Topological Materials and Phenomena
- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- 2D Materials and Applications
- Advanced Condensed Matter Physics
- MXene and MAX Phase Materials
- Iron-based superconductors research
- Magnetic properties of thin films
- Advanced Semiconductor Detectors and Materials
- Surface and Thin Film Phenomena
- Nanowire Synthesis and Applications
- High Entropy Alloys Studies
- Chalcogenide Semiconductor Thin Films
- Rare-earth and actinide compounds
- Advanced Materials Characterization Techniques
- Ferroelectric and Negative Capacitance Devices
- Chemical and Physical Properties of Materials
- Multiferroics and related materials
- Advanced Physical and Chemical Molecular Interactions
- Heusler alloys: electronic and magnetic properties
- Electronic Packaging and Soldering Technologies
- Graphene research and applications
- Quantum many-body systems
- Diamond and Carbon-based Materials Research
Oak Ridge National Laboratory
2024-2025
Institut Néel
2021-2023
Institut polytechnique de Grenoble
2021-2023
Université Grenoble Alpes
2021-2023
Centre National de la Recherche Scientifique
2021-2023
University of Pittsburgh
2023
Move aside, aluminum Some of the most promising schemes for quantum information processing involve superconductors. In addition to established superconducting qubits, topological qubits may one day be realized in semiconductor-superconductor heterostructures. The superconductor widely used this context is aluminum, which processes that cause decoherence are suppressed. Pendharkar et al. go beyond paradigm show tin can place (see Perspective by Fatemi and Devoret). authors grew nanowires...
The field of spintronics has seen a surge interest in altermagnetism due to novel predictions and many possible applications. MnTe is leading altermagnetic candidate that significant across its layered antiferromagnetic structure, high Neel temperature (TN ~ 310 K) semiconducting properties. We present results on molecular beam epitaxy (MBE) grown MnTe/InP(111) films. Here, it found the electronic magnetic properties are driven by natural stoichiometry MnTe. Electronic transport situ...
Ferromagnetism (FM) and superconductivity (SC) are two of the most famous macroscopic quantum phenomena. However, nature normally does not allow SC FM to coexist without significant degradation. Here, we introduce first fully iron-based SC/FM heterostructures, composed Fe(Te,Se) Fe3GeTe2, show that in this platform strong high-temperature robustly coexist. We subsequently discover chemical proximity effect from neighboring layers can universally drive otherwise non-superconducting FeTe films...
The intrinsic magnetic topological insulator (IMTI) family [MnTe][Bi2Te3]n has demonstrated magneto-topological properties dependent on n, making it a promising platform for advanced electronics and spintronics. However, due to technical barriers in sample synthesis, their the large n limit remain unknown. To overcome this, we utilized atomic layer-by-layer molecular beam epitaxy (ALL-MBE) technique achieved IMTIs with as 15, far beyond that previously reported bulk crystals or thin films....
Majorana zero modes, with prospective applications in topological quantum computing, are expected to arise superconductor/semiconductor interfaces, such as β-Sn and InSb. However, proximity the superconductor may also adversely affect semiconductor's local properties. A tunnel barrier inserted at interface could resolve this issue. We assess wide band gap semiconductor, CdTe, a candidate material mediate coupling lattice-matched between α-Sn To end, we use density functional theory (DFT)...
Abstract Realizing topological superconductivity by integrating high‐transition‐temperature ( T C ) superconductors with insulators can open new paths for quantum computing applications. Here, a approach is reported increasing the superconducting transition temperature interfacing unconventional superconductor Fe(Te,Se) insulator Bi–Te system in low‐Se doping regime, near where vanishes bulk. The critical finding that of increases from nominally non‐superconducting to as high 12.5 K when Bi...
The unique spin texture of quantum states in topological materials underpins many proposed spintronic applications. However, realizations such great potential are stymied by perturbations, as temperature and local fields imposed impurities defects, that can render a promising state uncontrollable. Here, we report room-temperature scanning tunneling microscopy/spectroscopy observation interaction between Rashba surface states, which manifests electronic structure along step edges controllable...
Many of the most exciting materials discoveries in fundamental condensed matter physics are made systems hosting some degree intrinsic disorder. While disorder has historically been regarded as something to be avoided design, it is often central importance correlated and quantum materials. This largely driven by conceptual theoretical ease handle, predict, understand highly uniform that exhibit complex interactions, symmetries, band structures. In this Perspective, we highlight how flipping...
Abstract The field of spintronics has seen a surge interest in altermagnetism due to novel predictions and many possible applications. MnTe is leading altermagnetic candidate that significant across its layered antiferromagnetic structure, high Neel temperature ( T N ≈ 310 K) semiconducting properties. results on molecular beam epitaxy (MBE) grown MnTe/InP(111) films are presented. Here, it found the electronic magnetic properties driven by natural stoichiometry MnTe. Electronic transport...
Quantum Materials Integrating topological materials and high temperature superconductors is critical for new applications. However, merging at atomically sharp interfaces presents distinct challenges. In article 2401809, Robert G. Moore, Matthew Brahlek, co-workers show an unconventional way to enhance superconductivity epitaxial between the Bi-Te insulators Fe(Se,Te), which highlights unusual properties while moving a step closer generation of quantum technologies.
Topology and superconductivity, two distinct phenomena offer unique insight into quantum properties their applications in technologies, spintronics, sustainable energy technologies if system can be found where they coexist. Tin (Sn) plays a pivotal role here as an element due to its structural phases, $\alpha$-Sn $\beta$-Sn, exhibiting topological characteristics ($\alpha$-Sn) superconductivity ($\beta$-Sn). In this study we show how precise control of $\alpha$ $\beta$ phases Sn thin films...
Metal deposition with cryogenic cooling is a common technique in the condensed matter community for producing ultra-thin epitaxial superconducting layers on semiconductors. However, significant challenge arises when these films return to room temperature, as they tend undergo dewetting. This issue can be mitigated by capping an amorphous layer. In this study, we investigate influence of differentin situfabricated caps structural characteristics Sn thin deposited at 80 K InSb substrates....