2026 CAP Congress / Congrès de l'ACP 2026

Session

(DCMMP) M1-11 | (DPMCM)

M1-11

22 Jun 2026, 10:15

U. Ottawa - Learning Crossroads (CRX) Building

569. Bilayer Graphene Quantum Dots as Quantum Simulators of Haldane Topological Quantum Matter

Daniel Miravet (University of Ottawa)

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral (Non-Student) / Orale (non-étudiant(e))

We demonstrate that chains of bilayer graphene quantum dots (BLGQDs) can realize topological quantum matter by effectively simulating spin-1 chains that host the Haldane phase. Using an atomistic tight-binding model combined with exact diagonalization, we show that two electrons per quantum dot form a robust spin-1 ground state across interaction regimes. For coupled quantum dots, the...

990. Collective mode spectroscopy in rhombohedral graphene superconductors

Étienne Lantagne-Hurtubise (Université de Sherbrooke)

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral (Non-Student) / Orale (non-étudiant(e))

In superconductors with multiple pairing channels, collective excitations known as "clapping modes" can arise in channels whose angular momenta differ from that of the pair condensate. Crystal symmetries often impose selection rules which keep these modes optically dark. We show that if pairing occurs around a single Fermi surface, trigonal warping renders clapping modes visible in the...

892. Energy- and electronic-grade synthetic functional carbon materials from waste cigarette filters.

Methembe Moyo (Concordia University)

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Graphite, a stable allotrope of carbon, boasts unique properties including high electrical conductivity, and excellent thermal and chemical stability. Currently, the demand for graphite in both research and development is rapidly increasing. Despite the abundance of high quality of natural graphite, synthetic graphite remains attractive due to scalable production, controlled property tuning,...

570. Ground state properties of twisted multilayer graphene

Alina Wania Rodrigues (University of Ottawa)

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral (Non-Student) / Orale (non-étudiant(e))

Multi-layer moiré materials offer a tunable platform for realizing electronic systems with strong electron correlations and topologically nontrivial states. We focus here on magic angle twisted trilayer graphene, exhibiting a flat band around the Fermi energy. In this work we determine the electronic properties of this platforms using an ab initio based, multi-million atomistic pz...

702. Metrology for solution processable 2D materials

Greg Lopinski (Metrology Research Center, National Research Council, Ottawa)

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral (Non-Student) / Orale (non-étudiant(e))

The isolation of graphene with its remarkable electronic, optical, mechanical and chemical properties has led to the emergence of a range of two-dimensional (2D) materials with unique properties. A variety of metallic, semiconducting and insulating 2D materials have been discovered and are being explored for a diverse range of applications. Many of these materials can be produced at high...

788. Visualizing Moiré Patterns and Lattice Reconstruction in Twisted Multilayer Graphene with Scanning Tunnelling Microscopy

Xue-Ying LiYang

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Recent studies have proposed devices consisting of multiple graphene layers with near magic-angle twists as a promising platform for experimentally realizing correlated topological states. In such systems, moiré superlattices originating from consecutive layers are expected to experience lattice relaxation that significantly modifies the electronic band structure of the device.
Here we...