Physics of graphene/superconductor junctions

• Grant number: 19/07082-9
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Start date: September 02, 2019
• End date: September 01, 2020
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Durval Rodrigues Junior
• Grantee: Antonio Lucas Rigotti Manesco
• Supervisor: Anton Roustiamovich Akhmerov
• Host Institution: Escola de Engenharia de Lorena (EEL). Universidade de São Paulo (USP). Lorena , SP, Brazil
• Institution abroad: Delft University of Technology (TU Delft), Netherlands
• Associated to the scholarship: 16/10167-8 - Investigation of electronic and topological properties of superconductor-graphene heterojunctions for applications in quantum computation devices, BP.DD

Abstract

It was recently proposed that graphene in the presence of in-plane and out-of-plane magnetic fields in proximity to an s-wave superconductor may host Majorana zero modes. In order to understand the qualitative behaviour of these zero modes, an effective model was proposed, but with parameters that are not directly related to physical quantities. Thus, in a more recent work, we derived the aforementioned model parametrized by observable quantities, which also explicitly takes into account the effects of atomic terminations. Having a model that connects the phenomenological parameters to real world quantities allows one to further study interesting properties of such junctions, namely,nonlocal signatures of topological phase transitions. We propose the following project of Research Internship Abroad, for a visiting period at TUDelft, under the supervision of Prof. Anton Akhmerov, due to his experience in disordered terminations of two-dimensional material and nonlocal transport setups to detect topological phase transitions. (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)

MANESCO, A. L. R.; LADO, J. L.; RIBEIRO, E. V. S.; WEBER, G.; RODRIGUES JR, D.. Correlations in the elastic Landau level of spontaneously buckled graphene. 2D MATERIALS, v. 8, n. 1, JAN 2021. (19/07082-9, 16/10167-8)

FERREIRA, P. P.; MANESCO, A. L. R.; DORINI, T. T.; CORREA, L. E.; WEBER, G.; MACHADO, A. J. S.; ELENO, L. T. F.. Strain engineering the topological type-II Dirac semimetal NiTe2. PHYSICAL REVIEW B, v. 103, n. 12, p. 13-pg., 2021-03-15. (19/14359-7, 16/10167-8, 19/05005-7, 20/08258-0, 19/07082-9, 18/08819-2, 18/10835-6)

LIU, CHUN-XIAO; SCHUWALOW, SERGEJ; LIU, YU; VILKELIS, KOSTAS; MANESCO, A. L. R.; KROGSTRUP, P.; WIMMER, MICHAEL. Electronic properties of InAs/EuS/Al hybrid nanowires. Physical Review B, v. 104, n. 1, JUL 22 2021. (19/07082-9, 16/10167-8)

BHATTACHARYYA, A.; FERREIRA, R. P.; SANTOS, F. B.; ADROJA, D. T.; LORD, J. S.; CORREA, L. E.; MACHADO, A. J. S.; MANESCO, A. L. R.; ELENO, L. T. F.. Two-band superconductivity with unconventional pairing symmetry in HfV2Ga4. PHYSICAL REVIEW RESEARCH, v. 2, n. 2, APR 1 2020. (16/11565-7, 19/05005-7, 16/11774-5, 18/08819-2, 18/10835-6, 19/07082-9, 18/20546-1, 16/10167-8)

MANESCO, ANTONIO L. R.; LADO, JOSE L.. Correlation-induced valley topology in buckled graphene superlattices. 2D MATERIALS, v. 8, n. 3, JUL 2021. (19/07082-9, 16/10167-8)

MANESCO, ANTONIO L. R.; FLER, IAN MATTHIAS; LIU, CHUN-XIAO; AKHMEROV, ANTON R.. Mechanisms of Andreev reflection in quantum Hall graphene. SCIPOST PHYSICS CORE, v. 5, n. 3, p. 16-pg., 2022-07-01. (19/07082-9, 16/10167-8)