Bothschafter Elisabeth M., Abreu Elsa, Rettig Laurenz, Kubacka Teresa, Parchenko Sergii, Porer Michael, Dornes Christian, Windsor Yoav William, Ramakrishnan Mahesh, Alberca Aurora, Manz Sebastian, Saari Jonathan, Koohpayeh Seyed M., Fiebig Manfred, Forrest Thomas, Werner Philipp, Dhesi Sarnjeet S., Johnson Steven L., Staub Urs (2017), Dynamic pathway of the photoinduced phase transition of TbMnO3, in
Physical Review B, 96(18), 184414-184414.
Staub U., Rettig L., Bothschafter E. M., Windsor Y. W., Ramakrishnan M., Avula S. R. V., Dreiser J., Piamonteze C., Scagnoli V., Mukherjee S., Niedermayer C., Medarde M., Pomjakushina E. (2017), Interplay of Fe and Tm moments through the spin-reorientation transition in TmFeO3, in
Physical Review B, 96(17), 174408-174408.
Windsor Y. W., Piamonteze C., Ramakrishnan M., Scaramucci A., Rettig L., Huever J. A., Bothschafter E. M., Bingham N. S., Alberca A., Avula S. R. V., Noheda B., Staub U. (2017), Magnetic properties of strained multiferroic CoCr2O4 : A soft x-ray study, in
Physical Review B, 95(22), 224413-224413.
Ramakrishnan M., Joly Y., Windsor Y. W., Rettig L., Alberca A., Bothschafter E. M., Lejay P., Ballou R., Simonet V., Scagnoli V., Staub U. (2017), Crystal symmetry lowering in chiral multiferroic Ba3TaFe3Si2O14 observed by x-ray magnetic scattering, in
Physical Review B, 95(20), 205145-205145.
Windsor Y. W., Tanaka Yoshikazu, Scagnoli V., Garganourakis M., de Souza R. A., Medarde M., Cheong S.-W., Staub U. (2016), Ferromagnetic and antiferromagnetic orders of a phase-separated manganite probed throughout the B−T phase diagram, in
Physical Review B, 94(21), 214412-214412.
Shimamoto K., Windsor Y. W., Hu Y., Ramakrishnan M., Alberca A., Bothschafter E. M., Rettig L., Lippert Th., Staub U., Schneider C. W. (2016), Multiferroic properties of uniaxially compressed orthorhombic HoMnO3 thin films, in
APPLIED PHYSICS LETTERS, 108(11), 112904.
Alberca A., Uribe-Laverde M. A., Windsor Y. W., Ramakrishnan M., Rettig L., Marozau I., Tonnerre J-M., Stahn J., Staub U., Bernhard C. (2015), Element-specific magnetization redistribution at YBa2Cu3O7/La2/3Ca1/3MnO3 interfaces, in
PHYSICAL REVIEW B, 92(17), 174415.
Windsor Y. W., Ramakrishnan M., Rettig L., Alberca A., Bothschafter E. M., Staub U., Shimamoto K., Hu Y., Lippert T., Schneider C. W. (2015), Interplay between magnetic order at Mn and Tm sites alongside the structural distortion in multiferroic films of o-TmMnO3, in
PHYSICAL REVIEW B, 91(23), 235144.
Johnson J. A., Kubacka T., Hoffmann M. C., Vicario C., de Jong S., Beaud P., Gruebel S., Huang S. -W., Huber L., Windsor Y. W., Bothschafter E. M., Rettig L., Ramakrishnan M., Alberca A., Patthey L., Chuang Y. -D., Turner J. J., Dakovski G. L., Lee W. -S., Minitti M. P., Schlotter W., Moore R. G., Hauri C. P., Koohpayeh S. M., Scagnoli V. (2015), Magnetic order dynamics in optically excited multiferroic TbMnO3, in
PHYSICAL REVIEW B, 92(18), 184429.
This proposal is an extension request for a 4th year to complete the study on the effect of electric fields on the electronic and magnetic properties of magnetic oxides, and to correspondingly complete the Phd thesis of Will Windsor. The project concentrates on magnetic oxides, which are magnetoelectric or multiferroic, with specific focus on perovskite manganites of type REMnO3 with orthorhombic symmetry (o-REMnO3). The idea is to apply electric fields and study the magnetic and electronic properties on the atomic level of bulk materials and compare them with epitaxially grown films. The main experimental technique used is resonant x-ray diffraction (RXD), predominantly in the soft x-ray regime. This is a challenging and still rapidly developing experimental technique that provides direct access to the magnetic and electronic states of the valence shells of 3d and 4f materials. Within the current project, which has run for just over 2 years to date, we have conducted detailed investigations of epitaxial films of the o-REMnO3 family and we have completed work on related manganite systems. Due to initial delays (e.g. in obtaining sufficiently high quality epitaxial films), the work of Will Windsor was extended epitaxial films of the multiferroic Spinel system CoCr2O4 and to the LPCMO manganite system, to guarantee success of the project. In the meantime, a sufficient amount of high quality films was obtained from our colleagues (C. Schneider at PSI), and experiments were successful. It is therefore already clear that the project needs an extension to be completed. The results obtained on o-LuMnO3 are most likely accepted in PRL (3rd referee round) and can be found already on the archive. We also expect to successfully complete the work on LPCMO and on other REMnO3 systems (studying the interplay between rare earth and Mn magnetism). However, the most important part of this work, namely the effect of applying electric fields on magnetism, has not yet been completed. Clearly the previous work on understanding the multiferroic properties of the films was mandatory for the electric field work to be achieved, but means that this cannot be completed within the initial period. The same is true for the Spinel system. We therefore ask here for the extension of a year to be able to complete these studies.