Professor Paolo G. Radaelli OSI: Publications

Prof Radaelli recognised with an MPLS "Excellent Supervisor" Award

Prof Radaelli is one of the 5 Oxford Physicists recognised in the inaugural "Excellence in Research Supervision" award

Read the story at this link

Electric field control of the magnetic chiralities in ferroaxial multiferroic RbFe(MoO4)2

(2012)

Authors:

Alexander J Hearmon, Federica Fabrizi, Laurent C Chapon, RD Johnson, Dharmalingam Prabhakaran, Sergey V Streltsov, PJ Brown, Paolo G Radaelli

Electric field control of the magnetic chiralities in ferroaxial multiferroic RbFe(MoO4)2

ArXiv 1202.2317 (2012)

Authors:

Alexander J Hearmon, Federica Fabrizi, Laurent C Chapon, RD Johnson, Dharmalingam Prabhakaran, Sergey V Streltsov, PJ Brown, Paolo G Radaelli

Abstract:

The coupling of magnetic chiralities to the ferroelectric polarisation in multiferroic RbFe(MoO$_4$)$_2$ is investigated by neutron spherical polarimetry. Because of the axiality of the crystal structure below $T_\textrm{c}$ = 190 K, helicity and triangular chirality are symmetric-exchange coupled, explaining the onset of the ferroelectricity in this proper-screw magnetic structure - a mechanism that can be generalised to other systems with "ferroaxial" distortions in the crystal structure. With an applied electric field we demonstrate control of the chiralities in both structural domains simultaneously.

Spin waves and revised crystal structure of honeycomb iridate Na2IrO3

(2012)

Authors:

SK Choi, R Coldea, AN Kolmogorov, T Lancaster, II Mazin, SJ Blundell, PG Radaelli, Yogesh Singh, P Gegenwart, KR Choi, S-W Cheong, PJ Baker, C Stock, J Taylor

Helical scattering signatures of strain and electronic textures in YbFe2O4 from three-dimensional reciprocal-space imaging

Physical Review B American Physical Society (APS) 85:1 (2012) 014115

Authors:

Alexander J Hearmon, Dharmalingam Prabhakaran, Harriott Nowell, Federica Fabrizi, Matthias J Gutmann, Paolo G Radaelli

Giant Improper Ferroelectricity in the Ferroaxial Magnet CaMn₇O₁₂

PHYSICAL REVIEW LETTERS 108:6 (2012) ARTN 067201

Authors:

RD Johnson, LC Chapon, DD Khalyavin, P Manuel, PG Radaelli, C Martin

51��