In physics, 2-dimensional systems are idealized physical systems whose relevant degrees of freedom are confined to a plane or an effectively two-dimensional manifold, such that dynamics and interactions occur predominantly within two spatial dimensions. They exhibit distinct phenomena compared with three-dimensional counterparts, including modified density of states, altered screening and fluctuation behavior, and dimensionality-dependent phase transitions (e.g., Kosterlitz–Thouless transitions mediated by topological defects). Examples include electrons in quantum wells or at interfaces, ultrathin films, and certain spin or lattice models defined on 2D lattices, which serve as fundamental platforms for studying critical phenomena, topological phases, and low-dimensional quantum many-body effects.
Researchers at the National University of Singapore (NUS) have observed a doping-tunable charge density wave (CDW) in a single-layer semiconductor, Chromium(III) selenide (Cr2Se3), extending the CDW phenomenon from metals ...
Condensed Matter
Sep 24, 2025
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In a study published in Journal of the American Chemical Society, a team led by Prof. Song Li from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences synthesized monolayer WS2 lateral ...
Nanomaterials
Sep 23, 2025
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Researchers with the Department of Energy's Oak Ridge National Laboratory and the University of Tennessee, Knoxville, have created an innovative method to visualize and analyze atomic structures within specially designed, ...
Nanophysics
Sep 23, 2025
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Researchers from Japan have discovered a unique Hall effect resulting from deflection of electrons due to "in-plane magnetization" of ferromagnetic oxide films (SrRuO3). Arising from the spontaneous coupling of spin-orbit ...
Condensed Matter
Sep 17, 2025
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In a new Nature study, researchers at the University of Manchester have achieved unprecedented electronic quality in graphene by developing a proximity screening technique that places conducting gates just one nanometer away ...
Picture the smartphone in your pocket, the data centers powering artificial intelligence, or the wearable health monitors that track your heartbeat. All of them rely on energy-hungry memory chips to store and process information. ...
Nanophysics
Sep 12, 2025
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Moiré superlattices are periodic patterns formed when two or more thin semiconducting layers are stacked with a small twist angle or lattice mismatch. When 2D materials form these patterns, their electronic, mechanical, and ...
2H-NbO₂—a novel van der Waals oxide synthesized by researchers from Japan—exhibits strongly correlated electronic properties with two-dimensional flexibility. By chemically extracting lithium ions from the layered sheets ...
Nanophysics
Sep 8, 2025
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Two-dimensional nanomaterials only a few atoms thick are being explored for a range of critical applications in biomedicine, electronics, nanodevices, energy storage and other areas, especially to enhance performance in extreme ...
Nanomaterials
Sep 5, 2025
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Graphene is an extraordinary material—a sheet of interlocking carbon atoms just one atom thick that is stable and extremely conductive. This makes it useful in a range of areas, such as flexible electronic displays, highly ...
Condensed Matter
Sep 5, 2025
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