J
J. G. Vale
Researcher at London Centre for Nanotechnology
Publications - 23
Citations - 542
J. G. Vale is an academic researcher from London Centre for Nanotechnology. The author has contributed to research in topics: Scattering & Resonant inelastic X-ray scattering. The author has an hindex of 8, co-authored 22 publications receiving 450 citations.
Papers
More filters
Journal ArticleDOI
Ultrafast energy- and momentum-resolved dynamics of magnetic correlations in the photo-doped Mott insulator Sr2IrO4
Mark Dean,Yue Cao,Xuerong Liu,Simon Wall,Diling Zhu,Roman Mankowsky,Vivek Thampy,Xiaoqian Chen,J. G. Vale,Diego Casa,Jungho Kim,Ayman Said,Pavol Juhas,Roberto Alonso-Mori,James M. Glownia,Aymeric Robert,Joseph Robinson,Marcin Sikorski,Sanghoon Song,Michael Kozina,Henrik T. Lemke,L. Patthey,S. Owada,Tetsuo Katayama,Makina Yabashi,Yoshikazu Tanaka,Tadashi Togashi,Jian Liu,C. Rayan Serrao,Bumjoon Kim,Lucas Huber,C.-L. Chang,D. F. McMorrow,Michael Först,John Hill +34 more
TL;DR: In this paper, the authors used magnetic resonant inelastic X-ray scattering at a free-electron laser to directly determine the magnetic dynamics after photo-doping the Mott insulator Sr2IrO4.
Journal ArticleDOI
Ultrafast energy and momentum resolved dynamics of magnetic correlations in photo-doped Mott insulator Sr$_2$IrO$_4$
Mark Dean,Yue Cao,Xuerong Liu,Simon Wall,Diling Zhu,Roman Mankowsky,Vivek Thampy,Xiaoqian Chen,J. G. Vale,Diego Casa,Jungho Kim,Ayman Said,Pavol Juhas,Roberto Alonso-Mori,James M. Glownia,Aymeric Robert,Joseph Robinson,M. Sikorski,Sanghoon Song,Michael Kozina,Henrik T. Lemke,L. Patthey,S. Owada,Tetsuo Katayama,Makina Yabashi,Yoshikazu Tanaka,Tadashi Togashi,Jian Liu,C. Rayan Serrao,Bum Joon Kim,Lucas Huber,C.-L. Chang,D. F. McMorrow,Michael Först,John Hill +34 more
TL;DR: This work implements magnetic resonant inelastic X-ray scattering at a free-electron laser to directly determine the magnetic dynamics after photo-doping the Mott insulator Sr2IrO4 and finds that the non-equilibrium state, 2 ps after the excitation, exhibits strongly suppressed long-range magnetic order, but hosts photo-carriers that induce strong, non-thermal magnetic correlations.
Journal ArticleDOI
Spin-orbit-driven magnetic structure and excitation in the 5d pyrochlore Cd2Os2O7.
Stuart Calder,J. G. Vale,Nikolay A. Bogdanov,Xuerong Liu,Xuerong Liu,C. Donnerer,Mary Upton,Diego Casa,Ayman Said,Mark D Lumsden,Zhiying Zhao,Zhiying Zhao,Jiaqiang Yan,Jiaqiang Yan,D. G. Mandrus,D. G. Mandrus,Satoshi Nishimoto,J. van den Brink,John Hill,D. F. McMorrow,A. D. Christianson,A. D. Christianson +21 more
TL;DR: The magnetic structure in Cd2Os2O7 is resolved with neutron diffraction and then via resonant inelastic X-ray scattering determine the salient electronic and magnetic energy scales controlling the MIT.
Journal ArticleDOI
Slaving of the magnetic moment canting to the correlated oxygen rotation in Sr2IrO4 revealed by X-ray resonant scattering
S. Boseggia,Helen Walker,J. G. Vale,Ross S Springell,Zhenxing Feng,M. Moretti Sala,Henrik M. Rønnow,Sean P. Collins,D. F. McMorrow +8 more
TL;DR: In this article, the authors used X-ray resonant scattering at the Ir $L_3$ edge to measure the intensity of Bragg peaks arising from different components of the magnetic structure.
Journal ArticleDOI
Evidence of quantum dimer excitations in Sr3Ir2O7
M. Moretti Sala,V. I. Schnells,S. Boseggia,Laura Simonelli,Ali Al-Zein,J. G. Vale,Luigi Paolasini,E. C. Hunter,R. S. Perry,Dharmalingam Prabhakaran,Andrew T. Boothroyd,Michael Krisch,G. Monaco,Henrik M. Rønnow,D. F. McMorrow,Frédéric Mila +15 more
TL;DR: In this paper, a bond-operator theory was proposed to describe the magnetic dispersion in bilayer iridate Sr3Ir2O7 using high-resolution resonant inelastic x-ray scattering performed at the iridium L-3 edge and theoretical techniques.