Dr. Ashish Arora


Physikalisches Institut

Wilhelm-Klemm-Str. 10
48149 Münster

Tel.: +49 251 83-36577

since 2017 Postdoctorate Researcher (German Research Foundation), Physikalisches Institut, University of Münster

Postdoctorate Researcher (A. v. Humboldt Research Fellow), Physikalisches Institut, University of Münster

2014 - 2015 Postdoctorate Researcher, Laboratoire National des Champs Magnétiques Intenses, CNRS, Grenoble, France (Dr. Marek Potemski)
2009 - 2014 Ph.D., Department of Condensed Matter Physics, Tata Institute of Fundamental Research, Mumbai, India (Prof. Sandip Ghosh)
2006 - 2009 Master of Science, Deartment of Condensed Matter Physics, Tata Institute of Fundamental Research, Mumbai, India (Prof. B. M. Arora)


  • Exciton-phonon coupling in mono- and bilayer MoTe2, S. Helmrich, R. Schneider, A. W. Achtstein, A. Arora, B. Herzog, S. Michaelis de Vasconcellos, M. Kolarczik, O. Schoeps, R. Bratschitsch, U. Woggon, and 2D Materials 5, 045007 (2018)
  • Phonon sidebands in monolayer transition metal dichalcogenides, D. Christiansen, M. Selig, G. Berghäuser, R. Schmidt, I. Niehues, R. Schneider, A. Arora, S. Michaelis de Vasconcellos, R.  Bratschitsch, E. Malic, and A. Knorr, Phys. Rev. Lett. 119, 187402 (2017)
  • Interlayer excitons in a bulk van der Waals semiconductor, A. Arora, M. Drüppel, R. Schmidt, T. Deilmann, R. Schneider, M. R. Molas, P. Marauhn, S. Michaelis de Vasconcellos, M. Potemski, M. Rohlfing, and R. Bratschitsch, Nature Communications 8, 639 (2017)
  • Valley dynamics of excitons in monolayer dichalcogenides,  G. Plechinger, P. Nagler, A. Arora, R. Schmidt, A. Chernikov, J. Lupton, R. Bratschitsch, C. Schüller, and T. Korn, Phys. Status Solidi RRL 11, No. 7, 1700131 (2017)
  • Highly anisotropic in-plane excitons in atomically thin and bulk-like 1T'-ReSe2 , A. Arora, J. Noky, M. Drüppel, B. Jariwala, T. Deilmann, R. Schneider, R. Schmidt, O. Del Pozo Zamudio, T. Stiehm, A. Bhattacharya, P. Krüger, S. Michaelis de Vasconcellos, M. Rohlfing and R. Bratschitsch, Nano Lett. 17, 3202 (2017)
  • Optical properties of atomically thin transition metal dichalcogenides: observations and puzzles, M. Koperski, M. R. Molas, A. Arora, K. Nogajewski, A. O. Slobodeniuk, C. Faugeras, and M. Potemski, Nanophotonics (online available, 2017)

  • Excitonic valley effects in monolayer WS2 under high magnetic fields, G. Plechinger, P. Nagler, A. Arora, A. Granados del Aguila, M. V. Ballotin, T. Frank, P. Steinleitner, M. Gmitra, J. Fabian, P. C. M. Christianen, R. Bratschitsch, C. Schüller, and T. Korn, Nano Lett. 16 (12), 7899 (2016)
  • Trion fine structure and coupled spin-valley dynamics in monolayer tungsten disulfide, G. Plechinger, P. Nagler, A. Arora, R. Schmidt, A. Chernikov, A. Granados del Aguila, P. C. M. Christianen, R. Bratschitsch, C. Schüller, and T. Korn, Nature Communications 7, 12715 (2016)
  • Magnetic-field-induced rotation of polarized light emission from monolayer WS2R. Schmidt,* A. Arora,* G. Plechinger, P. Nagler, A. Granados del Águila, M. V. Ballottin, P. C. M. Christianen, S. Michaelis de Vasconcellos, C. Schüller, T. Korn, and R. Bratschitsch, Phys. Rev. Lett., 117,077402 (2016) (*equal contribution)
  • Valley Zeeman splitting and valley polarization of neutral and charged excitons in monolayer MoTeat high magnetic fields, A. Arora, R. Schmidt, R. Schneider, M. Molas, I. Breslavetz, M. Potemski, and R. Bratschitsch, Nano Lett. 16, 3624 (2016)
  • Exciton band structure in layered MoSe2: From a monolayer to the bulk limit, A. Arora, K. Nogajewski, M. Molas, M. Koperski, and M. Potemski, Nanoscale 7, 20769 (2015)

  • Excitonic resonances in thin films of WSe2: From monolayer to bulk material, A. Arora, M. Koperski, K. Nogajewski, J. Marcus, C. Faugeras, and M. Potemski, Nanoscale, 7, 10421 (2015)

  • Single photon emitters in exfoliated WSe2 structures, M. Koperski, K. Nogajewski, A. Arora, J. Marcus, P. Kossacki, and M. Potemski, Nat. nanotechnol. 10, 503 (2015)

  • Indirect-to-direct band-gap crossover in few layer MoTe2, I. G. Lezama, A. Arora, A. Ubaldini, C. Barreateau, E. Giannini, M. Potemski, and A. Morpurgo, Nano Lett. 15, 2336 (2015)

  • Polarization of emission from non-polar III-nitride quantum wells: The influence of confinement, A. Arora and S. Ghosh,  J. Phys. D: Appl. Phys. 47 045101 (2014)

  • Large exciton g-factors in anisotropically strained A-plane GaN film measured using magneto-optical Kerr effect spectroscopy, A. Arora, N. Hatui, A. Bhattacharya, and S. Ghosh, App. Phys. Lett. 103, 052109 (2013)

  • Magneto-optical Kerr effect spectroscopy based study of Lande g-factor for holes in GaAs/AlGaAs single quantum wells under low magnetic fields, A. Arora, A. Mandal, S. Chakrabarti, and S. Ghosh, J. App. Phys. 113, 213505 (2013)

  • A mirror based polar magneto-optical Kerr effect spectroscopy arrangement, A. Arora, S. Ghosh, and V. Sugunakar, Rev. Sci. Instrum. 82, 123903 (2011)

  • Anisotropic structural and optical properties of a-plane (11-2 0) A/InN nearly-lattice-matched to GaN, M. R. Laskar, T. Ganguli, A. A. Rahman, A. Arora, N. Hatui, M. R. Gokhale, S. Ghosh, and A. Bhattacharya, App. Phys. Lett. 98, 181108 (2011)

  • A twisted periscope arrangement for transporting elliptically polarized light without change in its polarization state, A. Arora and S. Ghosh, Rev. Sci. Instrum. 81, 123102 (2010)

  • Polarization sensitive lateral photoconductivity in GaAs/AlGaAs quantum well based structures on low-temperature grown GaAs(001), A. Arora, S. Ghosh, B. M. Arora, S. Malzer, and G. Döhler, App. Phys. Lett. 97, 081902 (2010)

  • Fiber optic based system for polarization sensitive spectroscopy of semiconductor quantum structures, A. Arora, S. Sharma, B. Karmakar, M. Schardt, S. Malzer, B. Bansal, G. Döhler, and B. M. Arora, Rev. Sci. Instrum. 81, 083901 (2010)


2018 Best Poster Award, 3rd International Conference on 2D Crystals (Malta)
2015 - 2017 Research Fellowship by the Alexander von Humboldt foundation (Germany)
2006 - 2013 Research fellowship by the Tata Institute of Fundamental Research, Mumbai (India)
2006 University Gold Medal award for securing first position in Bachelor of Science, Panjab University, Chandirgarh (India)