Imperial College London


Faculty of Natural SciencesDepartment of Physics

Visiting Researcher







Blackett LaboratorySouth Kensington Campus





New papers and preprints on metamagnets:

Electronic structure of the metamagnetic Fe2P-based alloys

Microscopic theory of magnetism in the magnetocaloric material Fe2P1−xTx (T=B and Si)
E. K. Delczeg-Czirjak, L. Bergqvist, O. Eriksson, Z. Gercsi, P. Nordblad, L. Szunyogh, B. Johansson, and L. Vitos 
Phys. Rev. B 86, 045126 (2012)

Magnetic exchange interactions in B-, Si-, and As-doped Fe2P from first-principles theory 
E. K. Delczeg-Czirjak, Z. Gercsi, L. Bergqvist, O. Eriksson, L. Szunyogh, P. Nordblad, B. Johansson, and L. Vitos
Phys. Rev. B 85, 224435 (2012)

Metamagnetism in CoMnSi

Magneto-elastic coupling and competing entropy changes in substituted CoMnSi metamagnets
A. Barcza, Z. Gercsi, H. Michor, K. Suzuki, W. Kockelmann, K.S.Knight, K.G. Sandeman

Tuning the metamagnetism of an antiferromagnetic metal
J. B. Staunton, M. dos Santos Dias, J. Peace, Z.Gercsi, K. G. Sandeman 


Tipping the magneto-elastic balance



Figure: A fraction of the magnetic double-helix in CoMnSi metamagnet.

Our recent work on the CoMnSi metamagnet (see publications) was highlighted in the Annual Report 2010 of ISIS. A brief summary of our recent results can also be found here. Further readings about the topics are available under Publications.

A brief summary of my current research activities can be found under Research.


2009-Present: RA in the  Experimental Solid State Physics (EXSS) group  

2008-2009: RA in the Device Materials Group at University of Cambridge, Cambridge, UK.

2005-2008: JSPS adn ICYS fellow, Magnetic Materials Center, NIMS, Japan.

2002-2004: PhD at Ecole Normale Superieure de Cachan, France.



Demonstrator and marker of the photo-electric effect experiment in 3rd year physics laboratory.



Delczeg-Czirjak EK, Bergqvist L, Eriksson O, et al., 2012, Microscopic theory of magnetism in the magnetocaloric material P T ( and Si), Physical Review B, Vol:86, ISSN:1098-0121

Delczeg-Czirjak EK, Gercsi Z, Bergqvist L, et al., 2012, Magnetic exchange interactions in B-, Si-, and As-doped Fe P from first-principles theory, Physical Review B, Vol:85, ISSN:1098-0121

Gercsi Z, Hono K, Sandeman KG, 2011, Designed metamagnetism in CoMnGe1-xPx, Physical Review B, Vol:83, ISSN:1098-0121

Gercsi Z, Sandeman KG, 2010, Structurally driven metamagnetism in MnP and related Pnma compounds, Physical Review B, Vol:81, ISSN:1098-0121

Barcza A, Gercsi Z, Knight KS, et al., 2010, Giant Magnetoelastic Coupling in a Metallic Helical Metamagnet, Physical Review Letters, Vol:104, ISSN:0031-9007

More Publications