Dr Mervyn Roy

Senior Lecturer

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Dr Mervyn Roy

Department of Physics and Astronomy,
University of Leicester,
University Road, Leicester, LE1 7RH.

E: mr6@le.ac.uk
T: 0116 252 3582

Office: S6, physics building

Biography

Mervyn Roy graduated from the University of Leicester in 1995 with a first class BSc degree in Physics, winning the departmental prize for best student in his second and third years. Mervyn then stayed on at Leicester to study for a PhD in Many-electron effects in the X-ray absorption fine structure under the supervision of Dr S J Gurman. From 1999 to 2006 he was employed as a post-doctoral research associate in the department, first working on self-assembled semiconductor quantum dots, and then on carbon nanotube quantum dots. Mervyn was appointed as a Lecturer in July 2006 and promoted to senior lecturer in 2014.

Research

My research interests are focused mainly on the theory of quantum dots; I am currently working on carbon nanotube quantum dot devices and on graphene quantum dots. I also have long standing interests in scanning tunnelling microscopy and x-ray absorption spectroscopy. In addition to my work on artificial atoms, I am working on graphene photodetectors with colleagues from the space research centre.

I am experienced with effective mass, tight-binding, and ab-initio DFT electronic structure calculations for a variety of different systems. I have over 20 years experience of code development, and more than 15 years experience in X-ray absorption spectroscopy.

Selected publications

  • Scanning tunneling microscopy contrast of isovalent impurities on the GaAs (110) surface explained with a geometrical model. F. J. Tilley, Mervyn Roy, P. A. Maksym, P. M. Koenraad, C. M. Krammel, and J. M. Ulloa, Phys. Rev. B 93, 035313 (2016).
  • Reading and writing charge on graphene devices. M. R. Connolly, E. D. Herbschleb, R. K. Puddy, M. Roy, D. Anderson, G. A. C. Jones, P. Maksym and C. G. Smith, Appl. Phys. Letts 101, 023505 (2012).
  • Effective mass theory of interacting electron states in semiconducting carbon nanotube quantum dots. M. Roy and P. A. Maksym, Phys. Rev. B 85, 205432 (2012).
  • Generalized effective-mass theory of subsurface scanning tunneling. M. Roy, P. A. Maksym, D. Bruls, P. Offermans and P. M. Koenraad, Phys. Rev. B 82, 195304 (2010).
  • Magnetic field induced confinement-deconfinement transition in graphene quantum dots. G. Giavaras, P. A. Maksym, M. Roy, J. Phys.: Condens. Matter 21, 102201 (2009).
  • Enhanced donor binding energy close to a semiconductor surface. A. P. Wijnheijmer, J.K. Garleff, K. Teichmann, M. Wenderoth, S. Loth, R. G. Ulbrich, P. A. Maksym, M. Roy and P. M. Koenraad, Phys. Rev. Lett. 102, 166101 (2009).

Full publication list

Full publication list (Research Gate)

Teaching

Lecture notes and other teaching material

In 2016/17 I am module leader for PA2170 Waves and Fields, PA3210 Quantum Mechanics, PA4311 Quantum Theory of Solids, PA3450 Skills Electives, and PA4980 Physics Special Topics. In 2016/17 I supervised the year-3 training workshop in C programming, and I regularly supervise year-3 and 4 research projects and advanced study projects. Physics Special Topics has generated a great deal of interest in the media.

In 2016/17 I am one of two Programme Directors for the undergraduate degree programmes in Physics with responsibility for the student experience. In 2015/16 I was the Senior Tutor in the department.

In July 2013 I was awarded a University of Leicester Teaching Fellowship for my 'proactive, empathetic and innovative contributions to the teaching and student support activities of the Department of Physics and Astronomy.'

In February 2013 I was made a Fellow of the Higher Education Academy (UKPSF 2)

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