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arXiv · 2204.03009

Melting of magnetic order in ${\mathrm{NaOsO}}_{3}$ by fs laser pulses

Flavio Giorgianni·Max Burian·Namrata Gurung·Martin Kubli·Vincent Esposito·Urs Staub·Paul Beaud·Steven Lee Johnson·Yoav William Windsor·Laurenz Rettig·Dmitry Ozerov·Henrik Lemke·Susmita Saha·Federico Pressacco·Stephen Patrick Collins·Tadashi Togashi·Tetsuo Katayama·Shigeki Owada·Makina Yabashi·Kazunari Yamaura·Yoshikazu Tanaka·Valerio Scagnoli
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Abstract

NaOsO$_3$ has recently attracted significant attention for the strong coupling between its electronic band structure and magnetic ordering. Here, we used time-resolved magnetic X-ray diffraction to determine the timescale of the photoinduced \afm dynamics in NaOsO$_3$. Our measurements are consistent with a sub-100~fs melting of the \afm long-range order, that occurs significantly faster than the lattice dynamics as monitored by the transient change in intensity of selected Bragg structural reflections, which instead show a decrease of intensity on a timescale of several ps.

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Flavio Giorgianni, Max Burian, Namrata Gurung, Martin Kubli, Vincent Esposito, Urs Staub, Paul Beaud, Steven Lee Johnson, Yoav William Windsor, Laurenz Rettig, Dmitry Ozerov, Henrik Lemke, Susmita Saha, Federico Pressacco, Stephen Patrick Collins, Tadashi Togashi, Tetsuo Katayama, Shigeki Owada, Makina Yabashi, Kazunari Yamaura, Yoshikazu Tanaka, Valerio Scagnoli. 2022-04-06. Melting of magnetic order in ${\mathrm{NaOsO}}_{3}$ by fs laser pulses. https://doi.org/10.1103/physrevb.105.155147

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