TY  - JOUR
AB  - The microscopic structure of the polar (000 (1) over bar) and (0001) surfaces of lithium niobate is investigated by atomic-resolution frequency modulation atomic force microscopy and first-principles calculations. It is found that the surface reconstructs at annealing temperatures sufficiently high to drive off external adsorbates. In particular a (root 7 x root 7)R19.1 degrees reconstruction is found for the (000 (1) over bar) surface. Density-functional theory calculations show that-apart from the (root 7 x root 7)-a series of adatom-induced surface reconstructions exist that lower the surface energy and reduce the surface charge.
DA  - 2013
DO  - 10.1103/PhysRevB.88.115422
LA  - eng
IS  - 11
PY  - 2013
SN  - 2469-9950
T2  - Physical Review B
TI  - Charge compensation by long-period reconstruction in strongly polar lithium niobate surfaces
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29138007
Y2  - 2024-11-22T02:57:54
ER  -