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Melting the vortex crystal in the Heisenberg-Kitaev model in a magnetic field

Grant number: 17/22133-3
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2018
Effective date (End): August 29, 2020
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal researcher:Eric de Castro e Andrade
Grantee:Pedro Monteiro Cônsoli
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/00681-8 - Disordered magnets: ground state, excitations, and thermodynamics, AP.JP
Associated scholarship(s):19/02099-0 - Melting the vortex crystal in the Heisenberg-Kitaev model in a magnetic field, BE.EP.MS


We will investigate in this project exotic phases of matter which emerge due to the combination of strong spin-orbit coupling and electronic correlations, giving raise the so-called spin-orbit Mott insulators. As systems of interest, we have in mind the materials alpha-RuCl3 e A2IrO3 (A=Na, Li), which are well described by the Heisenberg-Kitaev model. In particular, we shall study in further detail alpha-RuCl3, a compound that presents strong evidence of a spin liquid phase in the presence of an external magnetic field. We would like to investigate how some of the unusual magnetic phases encountered in the classical limit of the Heisenberg-Kitaev model, such as a vortex crystal, generate a spin liquid when quantum fluctuations are included. In addition, we shall investigate if one of the possibly emergent spin liquids exhibits the adequate phenomenology to explain the results observed in alpha-RuCl3. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CONSOLI, PEDRO M.; JANSSEN, LUKAS; VOJTA, MATTHIAS; ANDRADE, ERIC C.. Heisenberg-Kitaev model in a magnetic field: 1/S expansion. Physical Review B, v. 102, n. 15, . (19/17026-9, 19/02099-0, 17/22133-3)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
CÔNSOLI, Pedro Monteiro. Extended Kitaev magnetism in magnetic fields. 2020. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC/BT) São Carlos.

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