Incommensurate spin density wave
WebFeb 17, 2014 · Incommensurate spin density wave as a signature of spin-orbit coupling Aaron Farrell, P.-K. Wu, Y.-J. Kao, T. Pereg-Barnea Close to half filling and in the limit of strong interactions the Hubbard model leads a spin Hamiltonian. In its original isotropic form this is the Heisenberg model with antiferromagnetic coupling . WebMar 27, 2024 · Incommensurate spin-density wave (ISDW) phases have long been known to be generated from paramagnetic (PM) metals either through a Fermi surface (FS) instability known as nesting or through the...
Incommensurate spin density wave
Did you know?
WebDec 18, 2024 · The incommensurate magnetic structure (0.47, 0, 0.49) of NaYNiWO6 exhibits unconventional spin-density waves (SDWs) along the [100] direction, in which up and down spins alternate in each half-wave. WebApr 19, 2010 · The spectral shapes in the so-called spin density wave (SDW) phase are interpreted in terms of incommensurate modulation of the magnetic structure, and allow the shape of the modulation to be determined. In undoped BaFe 2 As 2, the magnetic structure is commensurate, and we find that incommensurability is present at the lowest doping …
Webone electron-like and the other hole-like, separated by a wave vector Q. A strong repulsive interac-tion between electrons gives rise to heavy fermion bands H 0 = kσ ϵ 1(k) c † 1kσ c 1kσ+ ϵ 2(k) c † 2kσ c 2kσ , (1) where k is measured from the center of each pocket, and assumed to be small compared to the nesting vector Q. WebOct 27, 2024 · Download PDF Abstract: Although the magnetic order is suppressed by a strong magnetic frustration, it is maintained but appears in complex order forms such as a cycloid or spin density wave in weakly frustrated systems. Herein, we report a weakly magnetic-frustrated two-dimensional van der Waals material CrPSe$_3$. Polycrystalline …
WebFeb 11, 2013 · Incommensurate density waves emerge in a wide variety of correlated electron systems. They are a common aspect in cuprate superconductors ( 1, 2 ), itinerant transition-metal magnets ( 3, 4 ), and rare-earth compounds ( 5 – 7 ), as well as low-dimensional charge-ordered materials ( 8, 9) and perovskite manganites ( 10, 11 ). WebSymmetry-broken states with incommensurate modulation have attracted considerable attention in condensed-matter physics. Typical examples are charge- and spin-density waves in metals, magnetic structures in insulators, helicoidal structures in liquid crystals, and superconducting states with spatially nonuniform order parameters.
WebApr 14, 2024 · Charge and spin density waves are typical symmetry broken states of quasi one-dimensional electronic systems. They demonstrate such common features of all incommensurate electronic crystals as a spectacular non-linear conduction by means of the collective sliding and susceptibility to the electric field. These phenomena ultimately …
WebApr 4, 2024 · Charge density waves (CDWs) are pervasive in cuprate superconductors and are now believed to be fundamental to the low-temperature properties of these materials. A perplexing issue has been that the evolution of the wavevector of the CDW, QCDW, upon doping has different trends in different material families ( 1 ). earls restaurant west hillsWebJan 21, 2024 · Here, we report transverse incommensurate spin density waves (SDWs) for the Mn atoms with a propagating direction along the chain axes as a ground state for KMn6Bi5 by single crystal neutron ... css profile giftsWebJul 1, 2024 · In itinerant magnetic systems, a spin density wave (SDW) state can be induced by Fermi surface nesting and electron-electron interaction. It may intertwine with other orders such as charge density wave (CDW), while their relation is still yet to be understood. earls restaurant woodbridgeWebThe spin-density-wave (SDW) state in thin chromium films is well known to be strongly affected by proximity effects from neighboring layers. To date the main attention has been given to effects arising from exchange interactions at interfaces. In the present work we report on combined neutron and synchrotron scattering studies of proximity effects in … earls restaurant winston salem ncWebOct 14, 2012 · Figure 1: Incommensurate charge–density-wave order. Diffracted intensity in reciprocal space Q = ( h, k, l ) = h a *+ k b *+ l c * where a * = 2π/ a, b * = 2π/ b and c * = 2π/ c, with lattice... css profile help numberWebFeb 17, 2006 · Recent ab initio calculations have shown that the theory of the spin density wave (SDW) based on the nesting property of the chromium Fermi surface is not able to explain solely the stability of the incommensurate SDW. Using the model Hamiltonian approach, we develop a method which allows self-consistent calculation of SDWs with … css profile helpWebUltra-small-moment incommensurate spin density wave order masking a ferromagnetic quantum critical point in NbFe 2 ... spin density wave (SDW) order [8, 9]. Whereas there are many examples for the rst scenario, including ZrZn 2 [2], Ni 3Al [3] and UGe 2 [4], the transition into a modulated earls restaurant west edmonton