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Saffron Tyler

Current Research:

Transition metal dichalcogenide (TMD) monolayers are 2D semiconductors with direct band gaps. The monolayers can be stacked in various combinations to form heterostructures bonded via weak van der Waals forces [1]. This allows for the formation of interlayer excitons – a quasiparticle consisting of an excited electron in the conduction band of one monolayer, and a hole in the valence band of another [2]. The resultant electric dipole is strong [3] and can interact with other systems. In my project, I aim to couple interlayer excitons in TMDs with nitrogen-vacancy centres in diamond to create hybrid quantum devices.


[1] Cong, X., Liu, XL., Lin, ML. et al. Application of Raman spectroscopy to probe fundamental properties of two-dimensional materials. npj 2D Mater Appl 4, 13 (2020).
[2] Jiang, Y., Chen, S., Zheng, W. et al. Interlayer exciton formation, relaxation, and transport in TMD van der Waals heterostructures. Light Sci Appl 10, 72 (2021).
[3] Montblanch, A.RP., Kara, D.M., Paradisanos, I. et al. Confinement of long-lived interlayer excitons in WS2/WSe2 heterostructures. Commun Phys 4, 119 (2021).

Teaching:

I am currently a demonstrator in the 3rd year undergraduate physics laboratory, focusing specifically on the optical pumping experiment which allows for the investigation of the hyperfine structure of rubidium isotopes.

My Background:

I graduated with an MPhys degree from the University of Leicester in 2021. My 3rd year research project involved modelling a voltage through graphene in C. In my 4th year research I used the DFT modelling program QuantumEspresso to explore the electronic structure and mechanical properties of a theoretical carbon allotrope called pentadiamond. I also applied a similar model to hypothesise its silicon counterpart, pentasilicon.

Contact Details:

Email - Saffron dot Tyler at warwick dot ac dot uk

Office - MAS 3.09