No Mass Gap Phase Transition in Novel Massless Dirac Fermion Material
© The Physical Society of Japan
This article is on
Quantum Phase Transition in Organic Massless Dirac Fermion System α-(BEDT-TTF)2I3 under Pressure
(JPSJ Editors' Choice)
J. Phys. Soc. Jpn.
89,
123702
(2020)
.
Using an organic massless Dirac fermion system, we found that massless Dirac fermions undergo a quantum phase transition without creating any mass gap even in the strong coupling regime.
Quantum Phase Transition in Organic Massless Dirac Fermion System α-(BEDT-TTF)2I3 under Pressure
(JPSJ Editors' Choice)
J. Phys. Soc. Jpn.
89,
123702
(2020)
.
Share this topic
Fields
Related Articles
-
The Stiffness of Electronic Nematicity
Dielectric, optical, and other properties in condensed matter
Electronic structure and electrical properties of surfaces and nanostructures
Electronic transport in condensed matter
2024-11-21
Using laser-excited photoelectron emission microscope (laser-PEEM) we found that the nematic stiffness in iron-based superconductors significantly increases as the systems become strange metals, suggesting that spin–orbital fluctuations enhance the stiffness of electronic nematicity.
-
Chiral Gauge Field and Topological Magnetoelectric Response in Fully Spin-Polarized Magnetic Weyl Semimetal Co3Sn2S2
Electronic transport in condensed matter
Magnetic properties in condensed matter
2024-11-1
This study clarifies the relationship between magnetic ordering and chiral gauge fields in the ferromagnetic Weyl semimetal Co3Sn2S2, highlighting its spintronic potential using the topological magnetoelectric responses of Weyl fermions.
-
Fermi Machine — Quantum Many-Body Solver Derived from Mapping between Noninteracting and Strongly Correlated Fermions
Electron states in condensed matter
Measurement, instrumentation, and techniques
2024-10-29
Strongly interacting quantum many-body states can be mapped to noninteracting quantum states, enabling a new quantum neural network called the Fermi machine to solve strongly correlated electron problems.
-
Pressure-Tuned Classical–Quantum Crossover in Magnetic Field-Induced Quantum Phase Transitions of a Triangular-Lattice Antiferromagnet
Cross-disciplinary physics and related areas of science and technology
Electron states in condensed matter
Magnetic properties in condensed matter
2024-9-5
The correspondence principle states that as quantum numbers approach infinity, the nature of a system described by quantum mechanics should match that described by classical mechanics. Quantum phenomena, such as quantum superposition and quantum correlation, generally become unobservable when a system approaches this regime. Conversely, as quantum numbers decrease, classical descriptions give way to observable quantum effects. The external approach to classical–quantum crossover has attracted research interest. This study aims to demonstrate a method for achieving such control in materials.
-
Discovery of Light-Induced Mirror Symmetry Breaking
Dielectric, optical, and other properties in condensed matter
Electronic transport in condensed matter
2024-9-2
The authors discovered the light-induced mirror symmetry breaking, paving the way for controlling mirror symmetries via light and for realizing various phenomena utilizing the mirror symmetry breaking.