In-situ correlative study of 2D materials via surface science characterization tools
by
Maxwell Auditorium + Zoom
ALBA Synchrotron
Abstract
In this talk, I will review a few surface science studies in which engineered 2D materials have been correlatively characterized by surface science tools [1-3]. These tools include local probes, such as scanning tunnelling microscopy and spectroscopy, which offer atomic-scale insights into structural and electronic properties, and non-local probes, such as synchrotron-based X-ray photoemission and absorption spectroscopies, which complementarily provide insights into chemical, electronic, and magnetic properties at the surface-averaged level.
Subsequently, I will introduce the new low-temperature photon-scanning probe microscope (photon-SPM) that will be installed at ALBA. Within the context of InCAEM, it will enable in-situ correlative measurements with BOREAS, LOREA and CIRCE beamlines thanks to the use of compatible sample holders, ultra-high vacuum transfer system and fiducial markers system. The new photon-SPM will combine the powerful imaging capabilities of SPM with optical spectroscopies to provide insight into light-matter interactions with atom-scale and picosecond resolution [4]. The instrument will count with an optical setup consisting on pulsed and narrow linewidth CW lasers, RF signal generators (<18GHz) and up-to-date spectrograph covering the VIS-NIR spectral range. Besides STM/STS/nc-AFM modes, the instrument will allow STML, TEPL (<1meV), trans-STML, trans-TEPL, HBT interferometry (<30ps) and TERS (<5cm^-1) measurements, also at variable temperature and under variable magnetic field (<1T).
References
[1] V. Chesnyak et al. Stripe-Like hBN Monolayer Template for Self-Assembly and Alignment of Molecules, Small 2304803 (2023).
[2] M. G. Cuxart et al. Spatial Segregation of Substitutional B Atoms in Graphene Patterned by the Moiré Superlattice on Ir(111), Carbon 201, 881 (2023).
[3] M. G. Cuxart et al. Borophenes Made Easy, Sciences Advances 7, 1 (2021).
[4] K. Kuhnke et al. Atomic-Scale Imaging and Spectroscopy of Electroluminiscence at Molecular Interfaces, Chem. Rev. 117, 5174 (2017)
InCAEM Project
