Université de Fribourg

Probing the interplay between lattice dynamics and short-range magnetic correlations in CuGeO3 with femtosecond RIXS

Paris, E. ; Nicholson, Christopher W. ; Johnston, S. ; Tseng, Y. ; Rumo, Maxime ; Coslovich, G. ; Zohar, S. ; Lin, M. F. ; Strocov, V. N. ; Saint-Martin, R. ; Revcolevschi, A. ; Kemper, A. ; Schlotter, W. ; Dakovski, G. L. ; Monney, Claude ; Schmitt, T.

In: npj Quantum Materials, 2021, vol. 6, no. 1, p. 51

Investigations of magnetically ordered phases on the femtosecond timescale have provided significant insights into the influence of charge and lattice degrees of freedom on the magnetic sub-system. However, short-range magnetic correlations occurring in the absence of long-range order, for example in spin-frustrated systems, are inaccessible to many ultrafast techniques. Here, we show how...

Université de Fribourg

Coupled Cu and Mn charge and orbital orders in YBa₂Cu₃O₇/Nd 0.65 (Ca 1-y Sr y ) 0.35 MnO₃ multilayers

Perret, Edith ; Monney, Claude ; Johnston, S. ; Khmaladze, Jarji ; Lyzwa, Fryderyk ; Gaina, Roxana ; Dantz, M. ; Pelliciari, Jonathan ; Piamonteze, C. ; Mallett, B.P.P. ; Minola, M. ; Keimer, B. ; Schmitt, Thorsten ; Bernhard, Christian

In: Communications Physics, 2018, vol. 1, no. 1, p. 45

The observation of a charge density wave in the underdoped cuprate high Tc superconductors (Cu-CDW) raised a debate about its relationship with superconductivity. In bulk YBa2Cu3O7−δ the Cu-CDW is incipient and mainly pinned by defects. Nevertheless, a large magnetic field can induce a true long-range Cu- CDW order as it suppresses superconductivity. An enhanced Cu-CDW order was also ...

Consortium of Swiss Academic Libraries

XMM-Newton observations of PSR B1259−63 near the 2004 periastron passage

Chernyakova, M. ; Neronov, A. ; Lutovinov, A. ; Rodriguez, J. ; Johnston, S.

In: Monthly Notices of the Royal Astronomical Society, 2006, vol. 367, no. 3, p. 1201-1208