FLEET Seminar: Blanca Biel – Electronic properties and SPM characterization of transition metal dichalcogenides

BLANCA BIEL

University of Granada

Event flyer can be downloaded here. All welcome!

Abstract:

In this talk I will present my recent work on the electronic properties and SPM characterization of transition metal dichalcogenides (TMDs) and their lateral heterostructures, based on Density Functional Theory simulations.  In particular, I will review some results regarding the STM and AFM characterization of several point-like defects in freestanding MoS₂ [1,2]; the impact of Ir(111) and Au(111) substrates on the STM imaging of such defects, as confirmed by experimental evidence [3,4]; their potential applications as gas sensors [5]; and our preliminary work on the lateral WS₂-WSe₂ heterostructure, which points to the presence of extended electronic states at the interface.

[1] C. González, B. Biel, Y.J. Dappe, Nanotechnology 27, 105702 (2016)

[2] C. González, Y.J. Dappe, B. Biel, J. Phys. Chem. C 120, 17115 (2016)

[3] I. Delac Marion, D. Capeta, B. Pielic, F. Faraguna, A. Gallardo, P. Pou, B. Biel, N. Vujicic and M. Kralj (submitted)

[4] N. Krane, Ch. Lotze, P. Pou, B. Biel and K. Franke (in preparation)

[5] B. Biel et al. (in preparation)

 

About the Speaker:

Blanca Biel received a M. Sc. in Physics in 1999 from the Universidad de Granada (Granada, Spain) and completed her Ph.D. in Physics (with honors) at the Universidad Autónoma de Madrid (Madrid, Spain) in 2006 with a dissertation on first-principles based electronic transport in defected carbon nanotubes. After a two-year postdoctoral stay at CEA-LETI (Grenoble, France) working on electronic and transport properties of doped graphene-based materials she joined the University of Granada (Spain), where she is a Research Fellow at the Department of Atomic, Molecular and Nuclear Physics.

Dr. Biel’s research interests include the study of the electronic and quantum transport properties of one-and two- dimensional materials by means of combined atomistic (Density Functional Theory and tight-binding methods) and quantum transport (Non Equilibrium Green’s Functions) simulation tools. In particular, her work focuses on the impact of disorder at the atomic scale in this systems, such as atomic vacancies or dopants, and on the simulation, by first-principles methods, of the Scanning Probe Microscopy (STM and AFM) characterization of these defects.

Updated publications: http://www.researcherid.com/rid/C-5296-2009