Author：Huy Quang Ta, Qin Xiao Yang, Shuyuan Liu, A. Bachmatiuk, Rafael G. Mendes, Thomas Gemming,Yu Liu, Lijun Liu, Klaudia Tokarska, Rajen B. Patel, Jin-Ho Choi,* and Mark H. Rümmeli*

Abstract：

Compared to van der Waals two-dimensional (2D) layers with lateral covalent bonds, metallic bonding systems favor close-packed structures, and thus, free-standing 2D metals have remained, for the most part, elusive. However, a number of theoretical studies suggest a number of metals can exist as 2D materials and a few early experiments support this notion. Here we demonstrate free-standing single-atom-thick crystalline chromium (Cr) suspended membranes using aberration-corrected tran**ission electron microscopy and image simulations. Density functional theory studies confirm the 2D Cr membranes have an antiferromagnetic ground state making them highly attractive for spintronic applications. Moreover, the work also helps consolidate

Link：https://dx.doi.org/10.1021/acs.nanolett.0c01082

Journal：Nano Letters