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
• City of the host institution: São Carlos
• 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)

Scientific publications

(8)

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

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, MAY 13 2021. (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., 2023-01-03. (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., 2024-11-21. (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., 2024-05-01. (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., 2024-07-02. (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., 2024-03-11. (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., 2023-12-27. (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., 2021-05-13. (16/08468-0, 18/19017-4, 20/00841-9)