Pomeranchuk instabilities
WebNov 10, 2008 · Abstract. The density of states of graphene has van Hove singularities that can be reached by chemical doping and have already been explored in photoemission … WebNov 29, 2016 · The Pomeranchuk instabilities in the particle-hole channel can presumably co-exist with superconductivity, whereas the gap opening instability in the particle hole channel is likely to compete with superconductivity. In the case of asymmetric Weyl-loop semi-metal the SO(2) ...
Pomeranchuk instabilities
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WebINIS Repository Search provides online access to one of the world's largest collections on the peaceful uses of nuclear science and technology. The International Nuclear … WebThe Landau level projection is incorporated via a modified effective electron-electron interaction and the resulting band structure is described within the Hartree-Fock approximation. We regulate the infrared divergences in the theory and probe the intrinsic tendency of the Fermi surface to deform through Pomeranchuk instabilities.
WebDec 23, 2008 · We study the presence of Pomeranchuk instabilities induced by interactions on a Fermi liquid description of a graphene layer. Using a recently developed … WebThe Pomeranchuk instability, in which an isotropic Fermi surface distorts and becomes anisotropic due to strong interactions, is a possible mechanism for the growing number of experimental systems which display transpo…
WebIn the present paper we extend the method to detect Pomeranchuk instabilities in lattice systems developed in previous works to study more general situations. The main result … WebJul 23, 2008 · Abstract. We study the effect of weak and dilute disorder on the order parameter equation and transition temperature of a Pomeranchuk-type Fermi-surface …
WebSep 28, 2006 · We address at the mean field level the emergence of a Pomeranchuk instability in a uniform Fermi liquid with central particle-particle interactions. We find that …
WebJan 19, 2024 · Do you navigate arXiv using a screen reader or other assistive technology? Are you a professor who helps students do so? We want to hear from you. north1966.orgThe Pomeranchuk instability is an instability in the shape of the Fermi surface of a material with interacting fermions, causing Landau’s Fermi liquid theory to break down. It occurs when a Landau parameter in Fermi liquid theory has a sufficiently negative value, causing deformations of the Fermi surface to be … See more In a 3D isotropic Fermi liquid, consider small density fluctuations $${\textstyle \delta n_{k}=\Theta ( k -p_{\mathrm {F} })-\Theta ( k -p_{\mathrm {F} }'({\hat {k}}))}$$ around the Fermi momentum $${\textstyle p_{\mathrm {F} }}$$, … See more • Kohn anomaly • Pomeranchuk's theorem • Lindhard theory See more The Pomeranchuk instability manifests in the dispersion relation for the zeroth sound, which describes how the localized fluctuations of the momentum density function $${\textstyle \delta n_{k}}$$ propagate through space and time. Just as the … See more north 17 shopping center wilmington ncWebApr 7, 2024 · Fig. 3: Isospin Pomeranchuk effect and spin entropy. a, ρxx as a function of ν0 and Btot oriented at an angle of 9.1° relative to the sample plane, measured at 5 K and 10 … north 1973Websuch phases is via Pomeranchuk instabilities, which are distortion instabilities of the Fermi surface.16 A Pomeranchuk instability occurs in the angular-momentum channel lwhen the corre-sponding Fermi liquid parameter Fl is sufficiently negative.16 The phase resulting from an l = 2 type instability is a nematic, because the orien- how to renew il notaryWebMay 10, 2002 · Therefore, the investigation of interplay and rivalry between the Pomeranchuk instability and ferromagnetism, and other phases in the 2D t− t′ Hubbard model at the Van Hove filling is a considerable task. We will consider the leading instabilities depending on the ratio U /t (in all papers cited above it was fixed). how to renew iicrc certificationWebAug 7, 2009 · We study the presence of Pomeranchuk instabilities induced by interactions on a Fermi-liquid description of a graphene layer. Using a recently developed … how to renew ilr biometric residence permitWebMotived by the experimental discovery of higher-order Van Hove (HOVH) singularities in AV3Sb5 kagome metals, we study the instabilities in 2D systems with HOVH singularities and orbital degeneracy. In contrast to conventional Van Hove singularities, larger power-law divergent density of states, together with weaker nesting feature in higher-order Van Hove … north 1900 road