"Heavy fermions" are an appealing theoretical way to produce quantum entangled phenomena, but until recently have been observed mostly in dangerously radioactive compounds. A new paper in Physical Review Letters has shown ...
Nanophysics
Jul 8, 2021
0
366
In a classical second-order phase transition, condensed matter systems acquire long-range order upon cooling below the transition temperature, and the properties near the transition are driven by thermal fluctuations. These ...
Quantum Physics
Jun 14, 2021
0
8
Quantum spin Hall insulators are a class of two-dimensional (2D) topological states of matter that are electrically insulating in their interior but, unlike semiconductors, carry a pair of one-dimensional (1D) metallic states, ...
Nanophysics
May 28, 2021
0
320
A team of researchers at a Microsoft laboratory in the Netherlands, who published a 2018 paper in the journal Nature, has now retracted that paper, citing a lack of evidence to support their previous conclusions. The study ...
A new topological invariant χ is defined in systems with S4 symmetry to diagnose the existence of Weyl fermions. By calculating χ, the computational cost for searching Weyl semimetals is greatly reduced. Recently, Gao et ...
Soft Matter
Feb 24, 2021
1
5
In the text book of quantum mechanics, it's stated that bosons and fermions, two types of elementary particles that build the universe, behave in a drastically different way. For example, bosons can share the same quantum ...
Quantum Physics
Dec 17, 2020
0
109
The elementary particles that build the universe have two types: bosons and fermions, where the fermions are classified as Dirac, Weyl, and Majorana fermions. In recent years, Weyl fermions are found in condensed matter systems, ...
Condensed Matter
Nov 25, 2020
0
16
A team of researchers has amplified 3-D graphene's electrical properties by controlling its curvature.
Nanomaterials
Nov 20, 2020
0
156
Composite fermions are exotic quasi-particles found in interacting 2-D fermion systems at relatively large perpendicular magnetic fields. These quasi-particles, which are composed of an electron and two magnetic flux quanta, ...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Yokohama National University (YNU) have uncovered the peculiar mechanism by which spin perturbations travel through a seemingly unpassable region of a quantum spin ...
Quantum Physics
Jul 28, 2020
0
139
