26th Australian Institute of Physics Congress and the Australian and New Zealand Conference on Optics and Photonics

Session

AIP CMM: 2D Materials

CMM

7 Dec 2026, 11:30

Belinda Hutchinson Building (The University of Sydney )

557. Tuning Graphene Moiré Superlattice States via Molecular Self-Assembly

Julian Ceddia (Monash University)

07/12/2026, 11:30

1

AIP | Condensed Matter & Materials (CMM)

Invited talk

Moiré superlattices — the long-wavelength patterns that emerge when atomically thin crystals are stacked with a small twist or lattice mismatch — have become a versatile means of reshaping the electronic structure of two-dimensional materials. Yet the physics accessible in these systems is largely dictated by the geometries of the constituent crystals, restricting the design space to what...

571. Revealing interactions in the charge density wave material 1T-TiSe$_2$ with multi-dimensional coherent spectroscopy

N. Stavrias (Swinburne University of Technology)

07/12/2026, 12:00

AIP | Condensed Matter & Materials (CMM)

Contributed Oral

The macroscopic presentation of ordered phases in strongly correlated materials such as superconductivity and charge density waves (CDW) are intricately linked to the interactions within and between the various elementary excitations. Ultrafast spectroscopy with temperature and fluence control is a powerful technique for disentangling these interactions.

1T-TiSe$_2$ is a CDW system which...

383. Magnetic ground state discrimination using scanning tunnelling microscopy with nickelocene-functionalized tips

Benjamin Lowe (Institute of Physics, Czech Academy of Sciences)

07/12/2026, 12:15

AIP | Condensed Matter & Materials (CMM)

Contributed Oral

New classes of molecular magnetic materials have emerged from developments in on-surface synthesis. The continued development, profound understanding, and potential application of these materials require precise characterization of their magnetic properties. In recent years, scanning probe microscopy (SPM) using nickelocene-functionalized probes have emerged as a new atomic-scale magnetic...

57. Role of impurity statistics and medium constraints in polaron-polaron interactions

Jesper Levinsen (Monash University)

07/12/2026, 12:30

AIP | Condensed Matter & Materials (CMM)

Contributed Oral

We consider the behavior of a small density of mobile impurities (polarons) immersed in a quantum gas, a generic scenario that can be realized in cold atomic gases, liquid helium mixtures, and doped semiconductors. We present a unified theoretical framework for understanding polaron quasiparticles beyond the single-impurity limit, and we identify two key factors that control the...

405. Vibrational Properties Beyond the Debye Model

Dehong Yu (Australian Nuclear Science and Technology Organisation)

07/12/2026, 12:45

AIP | Condensed Matter & Materials (CMM)

Contributed Oral

The vibrational density of states (VDOS), g(ω), is a fundamental property governing the specific heat and thermal transport of materials. For more than a century, the Debye model has provided the foundation for understanding lattice vibrations in bulk crystalline solids, predicting a low-energy scaling of g(ω) ∝ ω².

In liquids, however, stable phonon modes are replaced by instantaneous...