Tag Archive for 'Fermion'

Xiong et al. observed a correlated insulator of interlayer excitons in a bilayer consisting of tungsten diselenide, which hosted holes, and tungsten disulfide, which hosted electrons. Image credit: Xiong et al., doi: 10.1126/science.add5574.

Physicists Create New Exotic State of Matter: Bosonic Correlated Insulator

Jun 9, 2023 by News Staff

This is the first time a highly ordered crystal of bosonic particles called excitons has been created in a real — as opposed to synthetic —...

The most recognizable feature of graphene’s electronic spectrum is its Dirac point, around which interesting phenomena tend to cluster. At low temperatures, the intrinsic behavior in this regime is often obscured by charge inhomogeneity, but thermal excitations can overcome the disorder at elevated temperatures and create an electron-hole plasma of Dirac fermions. The Dirac plasma has been found to exhibit unusual properties, including quantum-critical scattering and hydrodynamic flow. However, little is known about the plasma’s behavior in magnetic fields. Xin et al. report magnetotransport in this quantum-critical regime. Image credit: University of Manchester.

Physicists Discover Giant Magnetoresistance in Graphene

Apr 12, 2023 by News Staff

Record-high magnetoresistance appears in graphene under ambient conditions, according to new research led by the University of Manchester. The most recognizable...

Scanning electron microscopy image of a nanopatterned YBa2Cu3O7−δ (YBCO) thin film. The 12-nm-thick nanopatterned YBCO thin film was fabricated by reactive ion etching through an anodic aluminium oxide (AAO) membrane directly placed atop the YBCO. By RIE, the anodized aluminium oxide pattern of a triangular array of holes with ~70-nm diameter and ~103-nm period was duplicated onto the YBCO film. Image credit: Yang et al., doi: 10.1038/s41586-021-04239-y.

Physicists Discover New Type of ‘Strange Metal’

Jan 14, 2022 by News Staff

A team of physicists from the United States and China has detected the unexpected signatures of strange metallicity in a material in which electrical charge...

Cartoon illustration of the device design, where a thin hBN layer (blue) with selectively etched areas is used to avoid contact of the Pd electrodes (yellow) with the edges of the monolayer WTe2. The stack of graphite (gray)/hBN (blue)/monolayer WTe2 (red), shown in the cross-sectional view, is further stacked onto the bottom part with the electrodes, as indicated by the arrow. Inset: an image of device 1; the dashed red line highlights the monolayer edges and the white squares denote the contact regions. Image credit: Wang et al., doi: 10.1038/s41586-020-03084-9.

Physicists Observe Unexpected Quantum Phenomenon in Two-Dimensional Insulator

Jan 12, 2021 by News Staff

A team of physicists from the United States and Japan has experimentally observed a phenomenon called quantum oscillation in a two-dimensional topological...

A new type quasiparticle discovered in graphene double-layer structure. This so-called composite fermion consists of one electron and two different types of magnetic flux, illustrated as blue and gold colored arrows in the figure. Composite fermions are capable of forming pairs, such unique interaction lead to experimental discovery of unexpected new quantum Hall phenomena. Image credit: Michelle Miller & Jia Li, Brown University.

Physicists Observe Exotic Quantum States in Double-Layer Graphene

Jun 26, 2019 by News Staff

An international team of physicists from the United States and Japan has demonstrated a series of fractional quantum Hall effect states that arise in double-layer...

The ATLAS Experiment presented evidence for a first sighting of the Higgs boson decaying to a pair of bottom quarks, with an observed significance of 3.6 sigma. Image credit: ATLAS Collaboration.

Physicists Find Strong Evidence of Higgs Boson Decay to Quarks

Jul 26, 2017 by Enrico de Lazaro

The ATLAS experiment, one of the four major experiments at CERN’s Large Hadron Collider in Switzerland, has reported the first evidence for the decay...

Atoms of potassium-40 are cooled during imaging by laser light, allowing thousands of photons to be collected by the new microscope. Image credit: Lawrence Cheuk / MIT.

Physicists Create Microscope for Fermionic Atoms

May 13, 2015 by News Staff

A team of scientists led by Prof Martin Zwierlein of MIT-Harvard Center for Ultracold Atoms and Research Laboratory of Electronics has built a microscope...

Higgs boson decays to four muons: lines denote other particles, and energy deposited is shown in blue. Image credit: CMS.

Higgs Boson Decays to Fermions, CERN Study Confirms

Jun 23, 2014 by News Staff

New research conducted by physicists from CERN’s Compact Muon Solenoid experiment at the Large Hadron Collider has confirmed that the Higgs boson...

Physicists Probe Mystery of Majorana Fermion

Aug 2, 2012 by Sergio Prostak

Theoretical physicists at Dartmouth College in Hanover, New Hampshire, are on the track of an exotic, subatomic particle, whose existence was first predicted...