Topological materials are condensed-matter systems whose electronic or quasiparticle excitations are characterized by nontrivial topological invariants in momentum space, leading to robust boundary or defect states protected by symmetries such as time-reversal, crystalline, or particle–hole symmetry. Their bulk band structure exhibits features like band inversion and topological band gaps, enabling phenomena such as dissipationless edge or surface conduction, Dirac or Weyl fermions, and Majorana bound states. As physical systems, they serve as platforms for studying topological phases of matter, spin–orbit coupling effects, and emergent gauge fields, with relevance to quantum transport, spintronics, and topological quantum computation.
Topological materials are a class of materials that exhibit unique electronic properties at their boundary (surface in 3D materials; edge in 2D materials) that are robust against imperfections or disturbances and are markedly ...
Researchers at Northeastern University have discovered how to change the electronic state of matter on demand, a breakthrough that could make electronics 1,000 times faster and more efficient.
Condensed Matter
Jun 30, 2025
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The candidate pool for engineered materials that can help enable tomorrow's cutting-edge optical technologies—such as lasers, detectors and imaging devices—is much deeper than previously believed.
Optics & Photonics
Jun 24, 2025
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88
A team of international researchers led by the University of Ottawa has made a breakthrough in the development of ultra-thin magnets—a discovery that could lead to faster, more energy-efficient electronics, quantum computers, ...
Condensed Matter
Jun 23, 2025
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Scientists at University College Cork (UCC) in Ireland have developed a powerful new tool for finding the next generation of materials needed for large-scale, fault-tolerant quantum computing.
Superconductivity
May 29, 2025
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Whether bismuth is part of a class of materials highly suitable for quantum computing and spintronics was a long‑standing issue. Kobe University research has now revealed that the true nature of bismuth was masked by its ...
Condensed Matter
May 15, 2025
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133
Chirality—the property of an object that is distinct from its mirror image—has long captivated scientists across biology, chemistry, and physics. The phenomenon is sometimes called "handedness," because it refers to an object ...
Condensed Matter
May 7, 2025
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282
He Qinglin's group at the Center for Quantum Materials Science, School of Physics, has reported the first observation of non-reciprocal Coulomb drag in Chern insulators. This breakthrough opens new pathways for exploring ...
Condensed Matter
Apr 28, 2025
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Exceptional points (EPs) are unique types of energy-level degeneracies that occur in non-Hermitian systems. Since their existence was first proposed more than a century ago, physicists have only been able to experimentally ...
When an electric current passes through some materials, it generates a voltage perpendicular to the direction in which the current is flowing and of an applied magnetic field. This physical phenomenon, known as the anomalous ...
