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.
When it comes to layered quantum materials, current understanding only scratches the surface; so demonstrates a new study from the Paul Scherrer Institute PSI. Using advanced X-ray spectroscopy at the Swiss Light Source SLS, ...
Condensed Matter
Feb 18, 2025
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Finding the right lubricant for the right purpose is a task that is often extremely important in industry. Not only to reduce friction, overheating and wear, but also to save energy. At TU Wien, the research groups of Prof ...
Nanomaterials
Feb 18, 2025
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70
A research group recently discovered the disappearance of nonreciprocal second harmonic generation (SHG) in MnPSe₃ when integrated into a two-dimensional (2D) antiferromagnetic MnPSe₃/graphene heterojunction.
Nanophysics
Feb 14, 2025
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145
A Vanderbilt-led research team has made a significant breakthrough in developing advanced dialysis membranes using atomically thin materials like graphene. These innovative membranes, called nanoporous atomically thin membranes ...
Bio & Medicine
Feb 14, 2025
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41
A research team from the University of Science and Technology of China has demonstrated the ability to electrically manipulate the spin filling sequence in a bilayer graphene (BLG) quantum dot (QD). This achievement, published ...
Condensed Matter
Feb 13, 2025
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Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the light has achieved desirable optical gain, laser diodes release it as powerful laser beams.
Optics & Photonics
Feb 11, 2025
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26
The rapid advancement of technologies like artificial intelligence (AI) and the Internet of Things (IoT) has heightened the demand for high-speed, energy-efficient memory devices. Traditional memory technologies often struggle ...
Condensed Matter
Feb 10, 2025
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An international research team has synthesized a multilayered two-dimensional polyaniline (2DPANI) crystal, achieving unique metallic out-of-plane charge transport and high conductivity. This study was published in Nature.
Nanomaterials
Feb 6, 2025
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81
Quantum spin liquids (QSLs) are fascinating and mysterious states of matter that have intrigued scientists for decades. First proposed by Nobel laureate Philip Anderson in the 1970s, these materials break the conventional ...
Condensed Matter
Feb 5, 2025
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43
Nanoelectronics deal with extremely small electronic components—transistors, sensors and circuits that can fit on the tip of a needle. This technology powers our everyday lives through devices such as computers, smartphones ...
Nanophysics
Jan 23, 2025
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