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

https://doi.org/10.1038/s41535-021-00350-5

Paris, E. ; Nicholson, C. W. ; Johnston, S. ; Tseng, Y. ; Rumo, M. ; Coslovich, G. ; Zohar, S. ; Lin, M. F. ; Strocov, V. N. ; Saint-Martin, R. ; et al ( December 2021 , npj Quantum Materials)

Abstract 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 time-resolved resonant inelastic X-ray scattering (trRIXS) is capable of probing such short-ranged magnetic dynamics in a charge-transfer insulator through the detection of a Zhang–Rice singlet exciton. Utilizing trRIXS measurements at the O K -edge, and in combination with model calculations, we probe the short-range spin correlations in the frustrated spin chain material CuGeO 3 following photo-excitation, revealing a strong coupling between the local lattice and spin sub-systems.
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Enhanced charge density wave coherence in a light-quenched, high-temperature superconductor

https://doi.org/10.1126/science.abd7213

Wandel, S. ; Boschini, F. ; da Silva Neto, E. H. ; Shen, L. ; Na, M. X. ; Zohar, S. ; Wang, Y. ; Welch, S. B. ; Seaberg, M. H. ; Koralek, J. D. ; et al ( May 2022 , Science)

Ultrafast resonant soft x-ray scattering is used to monitor the dynamics of the charge density wave order in YBa 2 Cu 3 O 6+x .
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Lattice simulations with eight flavors of domain wall fermions in SU(3) gauge theory

https://doi.org/10.1103/PhysRevD.90.114502

Appelquist, T. ; Brower, R. C. ; Fleming, G. T. ; Kiskis, J. ; Lin, M. F. ; Neil, E. T. ; Osborn, J. C. ; Rebbi, C. ; Rinaldi, E. ; Schaich, D. ; et al ( December 2014 , Physical Review D)
Lattice simulations and infrared conformality

https://doi.org/10.1103/PhysRevD.84.054501

Appelquist, T. ; Fleming, G. T. ; Lin, M. F. ; Neil, E. T. ; Schaich, D. A. ( September 2011 , Physical Review D)
Parity Doubling and the S Parameter below the Conformal Window

https://doi.org/10.1103/PhysRevLett.106.231601

Appelquist, T. ; Babich, R. ; Brower, R. C. ; Cheng, M. ; Clark, M. A. ; Cohen, S. D. ; Fleming, G. T. ; Kiskis, J. ; Lin, M. F. ; Neil, E. T. ; et al ( June 2011 , Physical Review Letters)