Results 81 to 90 of about 7,189,276 (273)

Superlattices, Bonding-Antibonding, Fermi Surface Nesting, and Superconductivity

Condensed Matter, 2023
Raman and synchrotron THz absorption spectral measurements on MgB2 provide experimental evidence for electron orbital superlattices. In earlier work, we have detected THz spectra that show superlattice absorption peaks with low wavenumbers, for which ...
Jose A. Alarco, Ian D. R. Mackinnon
doaj   +1 more source

Fermi Surface of the 2D Hubbard Model at Weak Coupling

, 1996
We calculate the interaction-induced deformation of the Fermi surface in the two-dimensional Hubbard model within second order perturbation theory. Close to half-filling, interactions enhance anisotropies of the Fermi surface, but they never modify the ...
Halboth, Christoph J., Metzner, Walter
core   +1 more source

Fermi surface bosonization for non-Fermi liquids

Physical Review B
13+15 pages, 4 figure; the first two authors contributed equally to this ...
SangEun Han, Félix Desrochers, Yong Baek Kim   +2 more
openaire   +2 more sources

Fermi surface symmetric mass generation

Physical Review B, 2023
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.
Da-Chuan Lu, Meng Zeng, Juven Wang, Yi-Zhuang You   +3 more
openaire   +2 more sources

Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2 [PDF]

Science, 2019
Magnetic Weyl semimetals Weyl semimetals (WSMs)—materials that host exotic quasiparticles called Weyl fermions—must break either spatial inversion or time-reversal symmetry. A number of WSMs that break inversion symmetry have been identified, but showing
Noam Morali, R. Batabyal, P. Nag, Enke Liu, Qiunan Xu, Yan Sun, Binghai Yan, C. Felser, N. Avraham, H. Beidenkopf   +9 more
semanticscholar   +1 more source

The structural, magnetic, optoelectronic, and mechanical characteristics of NaGeX3 perovskites under pressure for soler-cell applications

Materials Research Express
This study examines the physical properties of germanium-based halide perovskite through Density Functional Theory (DFT) computations. The physical, optical, mechanical, and magnetic properties of NaGeX _3 (X = Cl, Br, and I) were examined with the ...
Istiak Ahmed Ovi, MD Ratul Hasan, Imtiaz Ahamed Apon, Fatema-Tuz Zahra   +3 more
doaj   +1 more source

A Fermi surface descriptor quantifying the correlations between anomalous Hall effect and Fermi surface geometry

SciPost Physics Core
In the last few decades, basic ideas of topology have completely transformed the prediction of quantum transport phenomena. Following this trend, we go deeper into the incorporation of modern mathematics into quantum material science focusing on geometry.
Elena Derunova, Jacob Gayles, Yan Sun, Michael W. Gaultois, Mazhar N. Ali
doaj   +1 more source

Interaction-induced Fermi surface deformations in quasi one-dimensional electronic systems

, 2003
We consider serious conceptual problems with the application of standard perturbation theory, in its zero temperature version, to the computation of the dressed Fermi surface for an interacting electronic system.
A. A. Abrikosov, B. Valenzuela, Benoît Douçot, C. Bourbonnais, C. Bourbonnais, C. Bourbonnais, C. Bourbonnais, C. Honerkamp, C. Honerkamp, C. J. Halboth, C. J. Halboth, D. Boies, D. Jérome, D. U. Jungnickel, D. Zanchi, D. Zanchi, E. Arrigoni, F. H. L. Essler, H. H. Lin, H. Nojiri, J. Feldman, J. Feldman, J. Kishine, J. Kishine, J. M. Luttinger, J. S. Langer, J. Sólyom, K. G. Wilson, K. Le Hur, K. Louis, K. Morita, M. Fabrizio, M. Fowler, M. Gell-Mann, M. Kimura, M. Tsuchiizu, M. Tsuchiizu, P. Foury, P. W. Anderson, R. Shankar, S. Biermann, S. Capponi, S. Dusuel, Sébastien Dusuel, T. Timusk, U. Ledermann, U. Ledermann, V. N. Prigodin, V. Vescoli, V. Zlatić, W. Kohn, Y. A. Firsov, Y. Yanase   +52 more
core   +2 more sources

Pertubation theory around nonnested fermi surfaces. I. Keeping the fermi surface fixed [PDF]

Journal of Statistical Physics, 1996
plain TeX with postscript figures in a uuencoded gz-compressed tar file. Put it on a separate directory before unpacking, since it contains about 40 files.
Feldman, Joel, Salmhofer, Manfred, Trubowitz, Eugene   +2 more
openaire   +3 more sources

Gyrotropic Magnetic Effect and the Magnetic Moment on the Fermi Surface. [PDF]

Physical Review Letters, 2015
The current density j^{B} induced in a clean metal by a slowly-varying magnetic field B is formulated as the low-frequency limit of natural optical activity, or natural gyrotropy.
Shudan Zhong, J. Moore, Ivo Souza
semanticscholar   +1 more source