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Electric field control of chiral magnetic domains in the high-temperature multiferroic CuO

Physical Review B - Condensed Matter and Materials Physics 85:13 (2012)

Authors:

P Babkevich, A Poole, RD Johnson, B Roessli, D Prabhakaran, AT Boothroyd

Abstract:

We have studied the high-temperature multiferroic cupric oxide using polarized neutron diffraction as a function of temperature and applied electric field. We find that the chiral domain population can be varied using an external electric field applied along the b axis. With the aid of representation analysis, we deduce the incommensurate magnetic structure in the multiferroic phase. We conclude that the origin of the magnetoelectric coupling is consistent with recently proposed models which are based on the inverse Dzyaloshinskii - Moriya interaction. © 2012 American Physical Society.
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Electric field control of chiral magnetic domains in the high-temperature multiferroic CuO

(2012)

Authors:

P Babkevich, A Poole, RD Johnson, B Roessli, D Prabhakaran, AT Boothroyd
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Antiferromagnetic order and domains in Sr3Ir2O7 probed by x-ray resonant scattering

(2012)

Authors:

S Boseggia, R Springell, HC Walker, AT Boothroyd, D Prabhakaran, D Wermeille, L Bouchenoire, SP Collins, DF McMorrow
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Evidence of magnetic correlations among the charge stripe electrons of charge-stripe ordered La2NiO4.11

Journal of Physics: Conference Series 340 (2012)

Authors:

PG Freeman, SM Hayden, RA Mole, M Enderle, D Prabhakaran, AT Boothroyd

Abstract:

The magnetic excitations of charge-stripe ordered La2NiO 4.11 where investigated using polarized- and unpolarized-neutron scattering to determine the magnetic excitations of the charge stripe electrons. We observed a magnetic excitation mode consistent with the gapped quasi-one-dimensional antiferromagnetic correlations of the charge stripe electrons previously observed in La2-xSrxNiO4 x = 1/3 and x = 0.275.
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Femtosecond Dynamics of the Collinear-to-Spiral Antiferromagnetic Phase Transition in CuO

PHYSICAL REVIEW LETTERS 108:3 (2012) ARTN 037203

Authors:

SL Johnson, RA de Souza, U Staub, P Beaud, E Moehr-Vorobeva, G Ingold, A Caviezel, V Scagnoli, WF Schlotter, JJ Turner, O Krupin, W-S Lee, Y-D Chuang, L Patthey, RG Moore, D Lu, M Yi, PS Kirchmann, M Trigo, P Denes, D Doering, Z Hussain, Z-X Shen, D Prabhakaran, AT Boothroyd
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