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Temperature dependence of the pressure induced monoclinic distortion in the spin S=1/2 Shastry-Sutherland compound SrCu2(BO3)(2)

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Zayed M. E., Rueegg Ch., Pomjakushina E., Stingaciu M., Conder K., Hanfland M., Merlini M., Ronnow H. M.,
Project Quantum Magnetism - Spinons, Skyrmions and Dipoles
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Original article (peer-reviewed)

Journal SOLID STATE COMMUNICATIONS
Volume (Issue) 186
Page(s) 13 - 17
Title of proceedings SOLID STATE COMMUNICATIONS
DOI 10.1016/j.ssc.2014.01.003

Open Access

URL https://infoscience.epfl.ch/record/198561?ln=en
Type of Open Access Repository (Green Open Access)

Abstract

We investigate the monoclinic distortion that occurs at 4.7 GPa at room temperature in the frustrated Shastry-Sutherland model quantum magnet SrCu2(BO3)(2) as a function of pressure and temperature by means of powder and single crystal angle dispersive synchrotron X-ray diffraction. Our results indicate that the onset of the structural distortion varies in a narrow pressure range between 4.0 and 5.0 GPa. This result will be useful in order to distinguish between magnetic transitions related to structural changes and potential intrinsic quantum phase transitions that various reports have suggested to take place in SrCu2(BO3)(2) at high pressure and low temperature.
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