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Dr Andrey Umerski

Profile summary

  • Central Academic Staff
  • Head of School
  • Faculty of Science, Technology, Engineering & Mathematics
  • School of Mathematics & Statistics
  • andrey.umerski

Professional biography

I am a senior lecturer in the School of Mathematics and Statistics and currently head of school. 

I studied at Lancaster University, Cambridge University and Kings College London.  I subsequently enjoyed a number of research posts at Exeter University, City University London and Imperial College London, before joining the Open University in 2001.

Research interests

My current research interest is in the area of spintronics, and involves the theoretical and computational modelling of magnetic multilayers and other nanostructures.

In particular, I am interested in electronic quantum effects exhibited by spin and charge transport through these structures. This includes magnetic exchange coupling, induced magnetic moment, various types of magneto-resistance behaviour, and magnetocrystalline anisotropy.

Teaching interests

In addition to my head of school duties, I am currently module team chair for M833.

In the past, I have written course texts for MS324, MS325, MST224, MST125 and MS327 and assessment materials for MST210.

 

Impact and engagement

My research is in a highly applicable area of mathematics and has contributed to the development of the modern day hard disk.  I am particularly interested in the way that electron spin can be used to transmit information and manipulate nanoscopic devices, with application to the real world.  An article based on some of my research was recently featured in 'UK Success Stories in Industrial Mathematics', Springer 2016, ISBN-10: 3319254529.

External collaborations

I have enjoyed fruitful collaboratorations with a large number of colleagues in Japan, Brazil, Poland and the UK.

Publications

Gilbert damping in magnetic layered systems (2014-07-16)
Barati, E.; Cinal, M.; Edwards, D. M. and Umerski, A.
Physical Review B, 90, Article 14420(1)
Reflection mechanism for generating spin transfer torque without charge current (2012-03-02)
Autes, G.; Mathon, J. and Umerski, A.
Journal of Applied Physics, 111, Article 53909(5)
Oscillatory behavior of tunnel magnetoresistance in a magnetic tunnel junction with varying magnetic layer thickness (2011-10-06)
Autes, G.; Mathon, J. and Umerski, A.
Physical Review B, 84 (pp. 134404-134404)
Theory of ultrahigh magnetoresistance achieved by k-space filtering without a tunnel barrier (2011-02-22)
Autès, G.; Mathon, J. and Umerski, A.
Physical Review B (Condensed Matter and Material Physics), 83, Article 52403(5)
Strong enhancement of the tunneling magnetoresistance by electron filtering in an Fe/MgO/Fe/GaAs(001) junction (2010)
Autès, G.; Mathon, J. and Umerski, A.
Physical Review Letters, 104(21) (p 217202)
Asymptotic behavior of tunneling magnetoresistance in epitaxial MgO tunnel junctions (2010)
Autès, G.; Mathon, J. and Umerski, A.
Physical Review B, 82(5) (p 52405)
Theory of tunneling magnetoresistance of Fe/GaAs/Fe(001) junctions (2010)
Autès, G.; Mathon, J. and Umerski, A.
Physical Review B, 82(11) (p 115212)
Theory of resonant spin-dependent tunneling in an Fe/Ag/MgO/Fe(001) junction (2009-07-01)
Autes, G.; Mathon, J. and Umerski, A.
Physical Review B, 80(2) (p 24415)
Theory of spin-transfer torque in the current-in-plane geometries (2009-07-01)
Wessely, O.; Umerski, A. and Mathon, J.
Physical Review B, 80(1) (pp. 014419-1)
Magnetic anisotropy of vicinal (001) fcc Co films: Role of crystal splitting and structure relaxation in the step-decoration effect (2006-05-18)
Cinal, M. and Umerski, Andrey
Physical Review B, 73 (p 184423)
Theory of tunneling magnetoresistance in a disordered Fe/MgO/Fe(001) junction (2006)
Mathon, J. and Umerski, A.
Physical Review B, 74(14) (p 140404)
Theory of resonant tunneling in an epitaxial Fe/Au/MgO/Au/Fe(001) junction (2005-06-03)
Mathon, J. and Umerski, A.
Physical Review B, 71(22) (pp. 2204021-2204024)
Self-consistent theory of current-induced switching of magnetization (2005-02-14)
Edwards, D.M.; Federici, F.; Mathon, J. and Umerski, A.
Physical Review B, 71(5) ((054407)1-(054407)16)
Quantum oscillation of TMR in tunneling junctions containing a non-magnetic spacer (2004-05)
Itoh, H.; Inoue, J.; Umerski, A. and Mathon, J.
Journal of Magnetism and Magnetic Materials, 272-276 (E1467-E1468)
Quantum oscillation of magnetoresistance in tunneling junctions with a nonmagnetic spacer (2003-11-19)
Itoh, H.; Inoue, J.; Umerski, A. and Mathon, J.
Physical Review B, 68(17) (pp. 1744211-1744219)
Theory of tunneling magnetoresistance of an epitaxial Fe/MgO/Fe(001) junction (2001-05-01)
Mathon, J. and Umerski, A.
Physical Review B, 63(22) (pp. 2204031-2204034)

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