Current-current interaction in low dimensional electronic systems

• Grant number: 15/21349-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: May 01, 2016
• End date: September 30, 2019
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Amir Ordacgi Caldeira
• Grantee: Thaís Victa Trevisan
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated scholarship(s): 16/12874-3 - Pairing induced by the interplay between nematic and magnetic fluctuations in iron-based superconductors, BE.EP.DR

Abstract

The aim of this research project, as an extension of our previous work, is to study the effects of a current-current-like interaction in low dimensional electronic systems as in small discrete rings and two-dimensional lattices. We will assume the existence of an interaction that, contrary to that described by the Breit-Darwin Hamiltonian, is able to attract antiparallel currents and also has an order of magnitude comparable with the Coulomb repulsion. Then, we will investigate if the interaction we propose leads to the amplification of the diamagnetic response in discrete rings with a few sites. Besides, we will inspect if it's possible that our interaction originates a ground state with current vortices in two-dimensional lattices. It's also part of our goal to investigate a possible origin of this current-current-like interaction. (AU)

Scientific publications

(6)

(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)

GASTIASORO, MARIA N.; TREVISAN, V, THAIS; FERNANDES, RAFAEL M.. Anisotropic superconductivity mediated by ferroelectric fluctuations in cubic systems with spin-orbit coupling. Physical Review B, v. 101, n. 17, MAY 1 2020. (15/21349-7)

TREVISAN, THAIS, V; MONTEIRO, GUSTAVO M.; CALDEIRA, AMIR O.. Enhancement of diamagnetism by momentum-momentum interaction: Application to benzene. PHYSICAL REVIEW B, v. 103, n. 18, p. 5-pg., 2021-05-17. (15/21349-7, 16/13517-0)

TREVISAN, V, THAIS; MONTEIRO, GUSTAVO M.; CALDEIRA, AMIR O.. Enhancement of diamagnetism by momentum-momentum interaction: Application to benzene. Physical Review B, v. 103, n. 18, MAY 17 2021. (16/13517-0, 15/21349-7)

TREVISAN, V, T.; MONTEIRO, G. M.; CALDEIRA, A. O.. Effective momentum-momentum coupling in a correlated electronic system. Physical Review B, v. 102, n. 12, SEP 17 2020. (16/13517-0, 15/21349-7)

GASTIASORO, MARIA N.; TREVISAN, THAIS, V; FERNANDES, RAFAEL M.. Anisotropic superconductivity mediated by ferroelectric fluctuations in cubic systems with spin-orbit coupling. PHYSICAL REVIEW B, v. 101, n. 17, p. 13-pg., 2020-05-01. (15/21349-7)

TREVISAN, T., V; MONTEIRO, G. M.; CALDEIRA, A. O.. Effective momentum-momentum coupling in a correlated electronic system. PHYSICAL REVIEW B, v. 102, n. 12, p. 13-pg., 2020-09-17. (15/21349-7, 16/13517-0)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

TREVISAN, Thaís Victa. Fenômenos exóticos em sistemas de baixa dimensionalidade. 2019. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Instituto de Física Gleb Wataghin Campinas, SP.