Progress in toroidal diamond anvil fabrication for use at the upgraded Advanced Photon Source

Applying external pressure in the study of materials allows one to control their electronic and magnetic orders, often resulting in novel emerging phenomena. A path to ultra-high static pressure generation has been opened by the introduction of toroidal diamond anvils. Owing to their reduced culet size and toroidal groove, these anvils have been shown to exceed static pressures of 600 GPa [1, 2]. In this talk, we present the recent developments in the fabrication of toroidal anvils. A versatile, user-friendly fabrication process has been developed. We discuss the reproducibility of the method, as well as preliminary results. Finally, we highlight some of the new possibilities for users coming from combining toroidal anvils with the upgraded Advanced Photon Source.

[1] A. Dewaele et al., Nat Commun 9, 2913 (2018).

[1] Z. Jenei et al., Nat Commun 9, 3563 (2018).