6533b827fe1ef96bd1286e7e
RESEARCH PRODUCT
Polarity Effects on ZnO Films Grown along the Nonpolar[112¯0]Direction
Vicente Muñoz-sanjoseJesús Zúñiga-pérezJaime ColcheroElisa Palacios-lidónsubject
Surface (mathematics)Kelvin probe force microscopeMaterials scienceCondensed matter physicsbusiness.industryPolarity (physics)General Physics and AstronomyCharge (physics)Orientation (vector space)OpticsPolarWork functionThin filmbusinessdescription
The surface electrical properties of ZnO thin films grown along the nonpolar $[11\overline{2}0]$ direction have been investigated by Kelvin probe microscopy on a nanometer scale. Two different charge domains, with a 75 meV work function difference, coexist within the ZnO surface, which is covered by rhombohedral pyramids whose sidewalls are shown to be ${10\overline{1}1}$-type planes. The presence and relative orientation of the two kinds of charge domains are explained in terms of the atomic arrangement at the ${10\overline{1}1}$ polar surfaces.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-11-22 | Physical Review Letters |