Tag

Composite Fermions

All articles tagged with #composite fermions

physics1 year ago•4 min saved

"Discovery of Six-Flux Composite Fermions Unveils New Quantum State"

Physicists at Purdue University have discovered a new type of emergent particle, the six-flux composite fermion, in the fractional quantum Hall regime, expanding the understanding of quantum states. This groundbreaking finding, published in Nature Communications, challenges previous ideas and theories, and is a rare and significant discovery in condensed matter physics. The unique properties of the six-flux composite fermion provide new insights into the ordering of fractional quantum Hall states and contribute to ongoing research in topological electron physics.

via Phys.org|

#composite-fermions #condensed-matter-physics #emergent-particles

physics2 years ago•6 min saved

"Unifying Forces: The Power of Composite Fermions in Physics"

Researchers have developed a new understanding of electron pairing in nanoscale semiconductor devices, leading to the formation of composite fermions and the induction of the fractional quantum Hall effect. This insight could provide clues for the development of high-temperature superconducting materials. The pairing of composite fermions releases an energy that is 20 times more stable than electron pairs responsible for superconductivity in known materials, potentially comparable to the pairing energy seen in the highest-temperature superconductors. Further testing and improvements in device quality are needed to validate these findings, with potential implications for future advancements in materials science and superconductivity.

via Physics|

#composite-fermions #fractional-quantum-hall-effect #high-temperature-materials

physics2 years ago•6 min saved

"Unveiling the Surprising Behavior of Composite Fermions: Flowing Without Magnetic Fields"

Researchers have discovered that certain twisted semiconductor bilayers can host a Fermi liquid of composite fermions (CFs) without the need for an applied magnetic field. CFs are weakly interacting particles that capture part of a magnetic field and display phenomena such as the fractional quantum Hall effect. Recent experiments have shown that a twisted bilayer of MoTe2 semiconductor exhibits CFs and the fractional quantum Hall effect without a magnetic field. Theoretical analysis predicts that this twisted bilayer can also realize a state called a CF Fermi liquid, which is a strongly correlated metallic state fundamentally different from ordinary electron Fermi liquids found in metals. The ability to create a CF Fermi liquid at zero magnetic field opens up new possibilities for exploring this peculiar state and its potential applications.

via Physics|

#composite-fermions #fermi-liquid #fractional-quantum-hall-effect