Research Engineer, Ultrafast Optics and Nanophotonics (DON)
Phone: +33(0)3 88 10 72 51Office: 2408

Research background

I have an expertise in developing ultrafast magnetism experiments using laser delivering femtosecond (10-15 seconds) pulses. I have also developed an innovative photo galvanic experiment imaging spin photocurrents and a few microscopes imaging magnetic domains. I have a strong background as an experimental physicist in condensed matter.

Since 2023 Research Engineer – IPCMS

2018 – 2023 Research fellow – Trinity College Dublin, Irlande

2013 – 2016 Research fellow – National University of Singapore

Academic background

2012 Doctorat – IPCMS

Ultrafast dynamics of semiconducting nanostructures

2008 Master II – École Normale Supérieure de Lyon – “Sciences de la matière”

2006 Master II – University of Strasbourg – “Condensed Matter and Nanophysics“

2004 Licence of Physics – University of Strasbourg

Current researches

  • Time-resolved XUV spectroscopy of magnetic materials (Atomag)
  • UV/VIS/IR time-resolved spectroscopy of magnetic materials (UNION)
  • Ultrafast magnetism at picosecond time scale


  • “Au4Mn, a localized ferromagnet with strong spin-orbit coupling, long-range ferromagnetic exchange and high Curie temperature.” Y. He, Z. Gercsi, R. Zhang, Y. Kang, Y. Skourski, L. Prendeville, O. Larmour, J. Besbas, C. Felser, P. Stamenov and J. M. D. Coey Phys. Rev. B 106, 214414 (2022)
  • “Single-pulse all-optical partial switching in amorphous DyxCo1-x and DyxCo1-x
    with random anisotropy” Z. Hu, J. Besbas, R. Smith, N. Teichert, G. Atcheson, K. Rode, P. Stamenov, and J. M. D. Coey Appl. Phys. Lett. 120, 112401 (2022)
  • “Ultrafast Double Pulse All-Optical Reswitching of a Ferrimagnet” C. Banerjee, K. Rode, G. Atcheson, S. Lenne, P. Stamenov, J. M. D. Coey, and J. Besbas Phys. Rev. Lett. 126, 177202 (2021)
  • “Single pulse all-optical toggle switching of magnetization without gadolinium in the ferrimagnet Mn2RuxGa” C. Banerjee, N. Teichert, K. E. Siewierska, Z. Gercsi, G. Y. P. Atcheson, P. Stamenov, K. Rode, J. M. D. Coey and J. Besbas Nat. Commun. 11, 4444 (2020)
  • “Exchange-driven all-optical magnetic switching in compensated 3d ferrimagnets” C. S. Davies, G. Bonfiglio, K. Rode, J. Besbas, C. Banerjee, P. Stamenov, J. M. D. Coey, A. V. Kimel, and A. Kirilyuk Phys. Rev. Res. 2, 032044(R) (2020)
  • “Magnetization dynamics of the compensated ferrimagnet Mn2RuxGa” G. Bonfiglio, K. Rode, K. Siewerska, J. Besbas, G. Y. P. Atcheson, P. Stamenov, J. M. D. Coey, A. V. Kimel, Th. Rasing, and A. Kirilyuk Phys. Rev. B 100, 104438 (2019)
  • “Room-Temperature Nanoseconds Spin Relaxation in WTe2 and MoTe2 Thin Films” Q. Wang, J. Li, J. Besbas, C.‐H. Hsu, K. Cai, L. Yang, S. Cheng, Y. Wu, W. Zhang, K. Wang, T.‐R. Chang H. Lin H. Chang, and H. Yang Adv. Sci. 5, 1700912 (2018)
  • “Direct visualization of current-induced spin accumulation in topological insulators” Y. Liu, J. Besbas, Y. Wang, P. He, M. Chen, D. Zhu, Y. Wu, J. M. Lee, L. Wang, J. Moon, N. Koirala, S. Oh, and H. Yang Nat. Commun. 9, 2492 (2018)
  • “Helicity-Dependent Photovoltaic Effect in Bi2Se3 Under Normal Incident Light” J. Besbas, K. Banerjee, J. Son, Y. Wang , Y. Wu, M. Brahlek, N. Koirala, J. Moon , S. Oh, and H. Yang Adv. Optical Mater. 4, 1642-1650 (2016)
  • “Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni J. Yu, X. Qiu, Y. Wu, J. Yoon, P. Deorani, J. M. Besbas, A. Manchon, and H. Yang Sci. Rep. 6, 32629 (2016).
  • “The role of Pt underlayer on the magnetization dynamics of perpendicular magnetic anisotropy Pt/Co2FeAl0.5Si0.5/MgO ” J. Besbas, L. M. Loong, Y. Wu, and H. Yang Appl. Phys. Lett. 108, 232408 (2016)
  • “Magnetic proximity effect in the topological insulator BiSbTeSe2” K. Banerjee, J. Besbas, P. Ren, L. Wang, H. Yang Phys. Status Solidi RRL 9, 175-179 (2015)
  • “Biexciton, single carrier, and trion generation dynamics in single-walled carbon nanotubes” B. Yuma, S. Berciaud, J. Besbas, J. Shaver, S. Santos, S. Ghosh, R. B. Weisman, L. Cognet, M. Gallart, M. Ziegler, B. Hönerlage, B. Lounis, and P. Gilliot Phys. Rev. B 87, 205412 (2013)
  • “Investigation of InGaN/GaN quantum wells for polariton laser diodes” M. Glauser, G. Rossbach, G. Cosendey, J. Levrat, M. Cobet, J.-F. Carlin, J. Besbas, M. Gallart, P. Gilliot, R. Butté, N. Grandjean Phys. Status Solidi C 9, 1325-1329 (2012)
  • “Spin relaxation of free excitons in narrow GaN/AlxGa1-xN quantum wells” J. Besbas, A. Gadalla, M. Gallart, O. Crégut, B. Hönerlage, P. Gilliot, E. Feltin, J.-F. Carlin, R. Butté, and N. Grandjean Phys. Rev. B 82, 195302 (2010)