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.
Dual topological phases have been discovered in an intrinsic monolayer crystal, a finding that reveals new and unique rule-bending properties in a quantum material, an international team of scientists led by Boston College ...
Condensed Matter
Apr 2, 2024
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101
In recent years, physicists and material scientists have identified various new materials marked by interesting properties and quantum effects. These materials could prove highly valuable both as platforms to study quantum ...
Researchers at AMOLF, in collaboration with partners from Germany, Switzerland, and Austria, have realized a new type of metamaterial through which sound waves flow in an unprecedented fashion. It provides a novel form of ...
Condensed Matter
Mar 27, 2024
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872
Experimental and theoretical physicists from the Würzburg Institute for Topological Insulators have observed a re-entrant quantum Hall effect in a mercury telluride device and have identified it as a signature of parity anomaly.
Condensed Matter
Mar 26, 2024
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140
A recent study conducted at Tel Aviv University has devised a large mechanical system that operates under dynamical rules akin to those found in quantum systems. The dynamics of quantum systems, composed of microscopic particles ...
General Physics
Mar 7, 2024
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218
A research team from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and the University of Salerno in Italy has discovered that thin films of elemental bismuth exhibit the so-called non-linear Hall effect, which could be ...
Condensed Matter
Feb 28, 2024
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152
In a novel experiment, physicists have observed long range quantum coherence effects due to Aharonov-Bohm interference in a topological insulator-based device. This finding opens up a new realm of possibilities for the future ...
Condensed Matter
Feb 22, 2024
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240
A new fusion of materials, each with special electrical properties, has all the components required for a unique type of superconductivity that could provide the basis for more robust quantum computing. The new combination ...
Superconductivity
Feb 8, 2024
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392
The branch of mathematics known as topology has become a cornerstone of modern physics thanks to the remarkable—and above all reliable—properties it can impart to a material or system. Unfortunately, identifying topological ...
General Physics
Jan 25, 2024
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182
In the pursuit of efficient energy utilization, scientists are looking into thermoelectric materials that can efficiently turn heat into electricity. One specific type, called topological magnets, is getting a lot of attention ...
Condensed Matter
Jan 23, 2024
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121
