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Figure 13
An illustration of the gap location for the case of the (011) plane in quartz. Parts (a)–(c) show three electron-density sections by the (011) plane at three various positions of the plane in the unit cell, while (d) shows the Γ(011, D) function with the vertical lines at the positions corresponding to the electron-density sections in (a)–(c).

Volume 8| Part 5| September 2021| Pages 793-804
ISSN: 2052-2525