Results 41 to 50 of about 7,151,360 (379)
Materials Science Forum, 2001 Electron-positron momentum densities in Y, reconstructed from two-dimensional angular correlation of annihilation radiation spectra, are compared with the theoretical predictions of fully-relativistic augmented plane-wave calculations. Knowledge of the theoretical densities and of the effects on them of certain symmetry selection rules has allowed us ...
R.N. West +2 more
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Fermi surface of a trapped dipolar Fermi gas [PDF]
Physical Review A, 2009 Under the framework of the semiclassical theory, we investigate the equilibrium-state properties of a spin polarized dipolar Fermi gas through full numerical calculation. We show that the Fermi surfaces in both real and momentum spaces are stretched along the attractive direction of dipolar interaction.
J. N. Zhang, Su Yi
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Optical signatures of shear collective modes in strongly interacting Fermi liquids
Physical Review Research, 2021 The concept of Fermi liquid lays a solid cornerstone to the understanding of electronic correlations in quantum matter. This ordered many-body state rigorously organizes electrons at zero temperature in progressively higher momentum states, up to the ...
D. Valentinis
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Multicritical Fermi Surface Topological Transitions. [PDF]
Physical Review Letters, 2018 A wide variety of complex phases in quantum materials are driven by electron-electron interactions, which are enhanced through density of states peaks. A well-known example occurs at van Hove singularities where the Fermi surface undergoes a topological ...
D. Efremov +5 more
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Asymptotic Pomeranchuk instability of Fermi liquids in half-filled Landau levels
Scientific Reports, 2023 We present a theory of spontaneous Fermi surface deformations for half-filled Landau levels (filling factors of the form $$\nu =2 \, n+1/2$$ ν = 2 n + 1 / 2 ).
Jorge Quintanilla, Orion Ciftja
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Fermi Surface Symmetric Mass Generation [PDF]
Phys. Rev. B 107, 195133 (2023), 2022 Symmetric mass generation is a novel mechanism to give gapless fermions a mass gap by non-perturbative interactions without generating any fermion bilinear condensation. The previous studies of symmetric mass generation have been limited to Dirac/Weyl/Majorana fermions with zero Fermi volume in the free fermion limit.
arxiv +1 more source
Remnant Fermi Surfaces in Photoemission [PDF]
Physical Review Letters, 2000 Recent experiments have introduced a new concept for analyzing the photoemission spectra of correlated electrons -- the remnant Fermi surface (rFs), which can be measured even in systems which lack a conventional Fermi surface. Here, we analyze the rFs in a number of interacting electron models, and find that the results fall into two classes.
Kusko C, Robert S. Markiewicz
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Fermi Surface Reconstruction without Symmetry Breaking
Physical Review X, 2020 We present a sign-problem-free quantum Monte Carlo study of a model that exhibits quantum phase transitions without symmetry breaking and associated changes in the size of the Fermi surface.
Snir Gazit +2 more
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Generalized fermi derivative on the hypersurfaces
MANAS: Journal of Engineering, 2022 In this paper, generalized Fermi derivative, generalized Fermi parallelism, and generalized non-rotating frame concepts are given along any curve on any hypersurface in Eⁿ⁺¹ Euclidean space.
Ayşenur Uçar, Fatma Karakuş
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Comments on holographic Fermi surfaces [PDF]
Journal of High Energy Physics, 2009 Recently, a mechanism for the development of a fermi surface in a holographic model of large N QCD with a baryon chemical potential was proposed. We examine similar constructions to determine when this mechanism persists. We find a class of models in which it does.
Greg van Anders +2 more
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