Calculation of the magnetotransport for a spin-density-wave quantum critical theory in the presence of weak disorder
| dc.creator | Silva, Hermann Freire Ferreira Lima e | |
| dc.date.accessioned | 2024-01-17T15:27:26Z | |
| dc.date.available | 2024-01-17T15:27:26Z | |
| dc.date.issued | 2017 | |
| dc.description.abstract | We compute the Hall angle and the magnetoresistance of the spin-fermion model, which is a successful phenomenological theory to describe the physics of the cuprates and ironbased superconductors within a wide range of doping regimes. We investigate both the role of the spin-fermion interaction that couples the large-momentum antiferromagnetic fluctuations to the so-called “hot-spots” at the Fermi surface and also of an effective higher-order composite operator in the theory. The latter operator provides a scattering mechanism such that the momentum transfer for the fermions close to the Fermi surface can be small. We also include weak disorder that couples to both the bosonic order-parameter field and the fermionic degrees of freedom. Since the quasiparticle excitations were shown in recent works to be destroyed at the “hot-spots” in the low-energy limit of the model, we employ the Mori-Zwanzig memory matrix approach that permits the evaluation of all transport coefficients without assuming well-defined Landau quasiparticles in the system. We then apply this transport theory to discuss universal metallic-state properties as a function of temperature and magnetic field of the cuprates from the perspective of their fermiology, which turn out to be in qualitative agreement with key experiments in those materials. | |
| dc.identifier.citation | FREIRE, Hermann. Calculation of the magnetotransport for a spin-density-wave quantum critical theory in the presence of weak disorder. European Physical Society Letters (EPL), Bristol, v. 118, n. 5, e57003, 2017. DOI: 10.1209/0295-5075/118/57003. Disponível em: https://iopscience.iop.org/article/10.1209/0295-5075/118/57003. Acesso em: 18 set. 2023. | |
| dc.identifier.doi | 10.1209/0295-5075/118/57003 | |
| dc.identifier.issn | 0295-5075 | |
| dc.identifier.issn | e- 1286-4854 | |
| dc.identifier.uri | https://iopscience.iop.org/article/10.1209/0295-5075/118/57003 | |
| dc.language.iso | eng | |
| dc.publisher.country | Gra-bretanha | |
| dc.publisher.department | Instituto de Física - IF (RMG) | |
| dc.rights | Acesso Restrito | |
| dc.title | Calculation of the magnetotransport for a spin-density-wave quantum critical theory in the presence of weak disorder | |
| dc.type | Artigo |
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