ELFT HÍRADÓ

[Horváth Zsolt Endre <horvath.zsolt.endre AT ek.hun-ren.hu>]

Kedves Kollégák!


2025 április 9-én, szerdán 11 órakor kerül sor a KFKI 26. épület, 1. 
emeleti tanácsteremben
Maxime Le Ster (Faculty of Physics and Applied Informatics, 
University 
of Lodz, Poland)



"Incommensurate registries in van der Waals materials"

című előadására.


Abstract



Two-dimensional (2D) materials such as graphene and transition metal 
dichalcogenides offer new paradigms in condensed-matter physics. The 
weak van der Waals interactions that couple adjacent 2D materials in 
multilayer assemblies mean that, contrary to conventional monolithic 
device such as Si-based architectures, the component layers possess a 
twist degree of freedom as well as a translation degree of freedom [1]. 
The main implication of this is that designs with no true translational 
symmetry, but instead with aperiodic or quasicrystalline order, can be 
achieved. In this talk I will present an overview of the physics that 
can be unlocked in incommensurate systems and showcase two of our recent 
works: the simulation of scanning tunnelling microscopy images in van 
der Waals systems which break translation symmetry [2], as well as our 
recent experimental discovery of directional superlubricity [3].


[1] K. S. Novoselov et al., “2D materials and van der Waals 
heterostructures”, Science 353 (6298) (2016)

[2] M. Le Ster et al., “Moiré plane wave expansion model for scanning 
tunneling microscopy simulations of incommensurate two-dimensional 
materials”, Phys. Rev. B 110 (19), 195418 (2024)

[3] M. Le Ster et al., “Evidence of directional structural 
superlubricity and Lévy flights in a van der Waals heterostructure”, 
Small 21 (6), 2408349 (2024)






Minden érdeklődőt szívesen látunk!

Horváth Zsolt Endre
Szeminárium koordinátor

--
Dr. Zsolt E. HORVÁTH
Institute for Technical Physics and Materials Science,
Centre for Energy Research
(EK MFA)
Konkoly Thege Rd. 29-33, 1121 Budapest,
Mail: P.O.Box 49, H-1525 Budapest, Hungary
Phone: +36-1-392-2680, Fax: +36-1-392-2226
e-mail:horvath.zsolt.endre AT ek-cer.hu