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Shubnikov-de-Haas oscillations in topological and non-topological electron systems

Grant number: 20/00841-9
Support Opportunities:Regular Research Grants
Start date: July 01, 2020
End date: June 30, 2022
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:José Carlos Egues de Menezes
Grantee:José Carlos Egues de Menezes
Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant(s):24/22653-0 - APS Global Physics Summit 2025, AR.EXT

Abstract

Here we present research plans to investigate Shubnikov-de-Haas oscillations in a number of quantum well systems ranging from ordinary two-dimensional electron gases in InAs, GaAs single quantum wells with competing Rashba and Dresselhaus couplings to topological 2D structures such as InAs/GaSb double wells where topological insulating behavior has been predicted. Our approach relies on obtaining the density of states of two dimensional systems in the presence of quantizing magnetic fields via trace formulas which we then combine with a phenomenological (Drude type) semiclassical approach to determine the magnetoresistence of the system. We also envision applying our approach to investigate quantum oscillations in anomalous quantum Hall systems (Chern insulators) and Weyl semimetals. Our proposal is motivated by some recent experimental results involving SdH oscillations in topological insulators and Rashba-Dresselhaus coupled systems: Beukman \textit{et al.}, Phys. Rev. \textbf{96}, 241401(R) (2017) and Cimpoiasu \textit{et al.} J. Appl. Phys. \textbf{126}, 075704 (2019). This proposal is also an outgrowth or our own recent collaborative works. (AU)

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Scientific publications (8)
(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)
SCHLIEMANN, JOHN; COSTA, I, JOAO VITOR; WENK, PAUL; EGUES, J. CARLOS. Many-body localization: Transitions in spin models. Physical Review B, v. 103, n. 17, . (16/08468-0, 18/19017-4, 20/00841-9)
CALIFRER, IGOR J.; PENTEADO, POLIANA H.; CARLOS EGUES, J.; CHEN, WEI. Proximity-induced zero-energy states indistinguishable from topological edge states. PHYSICAL REVIEW B, v. 107, n. 4, p. 9-pg., . (20/00841-9, 16/08468-0)
CAMPOS, WARLLEY H.; PENTEADO, POLIANA H.; ZANON, JULIAN; JUNIOR, PAULO E. FARIA; CANDIDO, DENIS R.; EGUES, J. CARLOS. Dual topological insulator with mirror symmetry protected helical edge states. PHYSICAL REVIEW B, v. 110, n. 19, p. 17-pg., . (20/00841-9)
RAMESAN, ANANDHU K.; D'SOUZA, BRAYAL; SEKARAN, VARALAKSHMI CHANDRA. Out-of-pocket expenses and healthcare service utilisation among maintenance haemodialysis patients: A study at a tertiary care hospital in Udupi, Karnataka. JOURNAL OF EDUCATION AND HEALTH PROMOTION, v. 13, n. 1, p. 8-pg., . (20/00841-9)
DOURADO, RODRIGO A.; PENTEADO, POLIANA H.; EGUES, J. CARLOS. Nonlocality of local Andreev conductances as a probe for topological Majorana wires. PHYSICAL REVIEW B, v. 110, n. 1, p. 19-pg., . (20/00841-9)
GRAMIZADEH, HAMED; CANDIDO, DENIS R.; MANOLESCU, ANDREI; EGUES, J. CARLOS; ERLINGSSON, SIGURDUR I.. Efficient method for analyzing magneto-oscillations of two-dimensional spin-orbit coupled electron gases. PHYSICAL REVIEW B, v. 109, n. 11, p. 9-pg., . (20/00841-9, 16/08468-0)
CANDIDO, DENIS R.; ERLINGSSON, SIGURDUR I.; GRAMIZADEH, HAMED; COSTA, JOAO VITOR I.; WEIGELE, PIRMIN J.; ZUMBUEHL, DOMINIK M.; EGUES, J. CARLOS. Beating-free quantum oscillations in two-dimensional electron gases with strong spin-orbit and Zeeman interactions. PHYSICAL REVIEW RESEARCH, v. 5, n. 4, p. 29-pg., . (20/00841-9, 16/08468-0)
SCHLIEMANN, JOHN; COSTA, JOAO VITOR, I; WENK, PAUL; EGUES, J. CARLOS. Many-body localization: Transitions in spin models. PHYSICAL REVIEW B, v. 103, n. 17, p. 10-pg., . (16/08468-0, 18/19017-4, 20/00841-9)