نتایج جستجو برای: semimetals
تعداد نتایج: 1563 فیلتر نتایج به سال:
Weyl semimetals famously host a surface topological metal containing open Fermi arcs instead of closed surfaces. Here, the authors predict another feature, Luttinger arcs, that form loops with in undoped semimetals. are common, albeit experimentally inaccessible, for strongly interacting electrons. they occur even without interactions and switch places different terminations -- property exploit...
Abstract We consider tunneling of quasiparticles through a rectangular quantum well, subject to periodic driving. The are the itinerant charges in two-dimensional and three-dimensional semimetals having quadratic bandtouching (QBT) point Brillouin zone. To analyze time-periodic Hamiltonian, we assume non-adiabatic limit where Floquet theorem is applicable. By deriving scattering matrices, chalk...
We performed thermoelectric Hall conductivity ${\ensuremath{\alpha}}_{xy}$ measurements on single-crystal graphite in the quantum limit up to 13 T. Both electrical and transport were same crystal extract pure ${\ensuremath{\alpha}}_{xy}$, avoiding any sample quality dependence. The converges a plateau with linear dependence temperature. This behavior is analogous quantized effect (QTHE) observe...
The magnetotransport properties of epitaxial films of Cd_{3}As_{2}, a paradigm three-dimensional Dirac semimetal, are investigated. We show that an energy gap opens in the bulk electronic states of sufficiently thin films and, at low temperatures, carriers residing in surface states dominate the electrical transport. The carriers in these states are sufficiently mobile to give rise to a quantiz...
The chiral magnetic e ect is the generation of an electric current induced by chirality imbalance in the presence of a magnetic field. It is a macroscopic manifestation of the quantumanomaly1,2 in relativisticfield theoryof chiral fermions (massless spin 1/2 particles with a definite projection of spin on momentum)—a remarkable phenomenon arising from a collective motion of particles and antipa...
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