Atomic Structure of Submonolayer NaCl Grown on Ag(110) Surface

Quertite, Khalid; Lasri, Karima; Enriquez, Hanna; Mayne, Andrew J.; Bendounan, Azzedine; Dujardin, Gérald; Trcera, Nicolas; Malone, Walter; El Kenz, Abdallah; Benyoussef, Abdelilah; Kara, Abdelkader; Oughaddou, Hamid

doi:10.1021/acs.jpcc.7b05150

Title: Atomic Structure of Submonolayer NaCl Grown on Ag(110) Surface

Journal Article · Wed Aug 23 00:00:00 EDT 2017 · Journal of Physical Chemistry. C

DOI:https://doi.org/10.1021/acs.jpcc.7b05150· OSTI ID:1480499

Quertite, Khalid ^[1]; Lasri, Karima ^[2]; Enriquez, Hanna ^[3]; Mayne, Andrew J. ^[3];

^[4]; Dujardin, Gérald ^[3]; Trcera, Nicolas ^[4]; Malone, Walter ^[2]; El Kenz, Abdallah ^[5]; Benyoussef, Abdelilah ^[6];

^[2];

^[7]

Univ. Paris-Sud, Orsay (France). Inst. des Sciences Moléculaires d’Orsay; Synchrotron Soleil, Gif-sur-Yvette (France); Univ. Mohammed V, Rabat (Morocco). Faculté des Sciences
Univ. of Central Florida, Orlando, FL (United States). Dept. of Physics
Univ. Paris-Sud, Orsay (France). Inst. des Sciences Moléculaires d’Orsay
Synchrotron Soleil, Gif-sur-Yvette (France)
Synchrotron Soleil, Gif-sur-Yvette (France); Univ. Mohammed V, Rabat (Morocco). Faculté des Sciences
Synchrotron Soleil, Gif-sur-Yvette (France); Univ. Mohammed V, Rabat (Morocco). Faculté des Sciences; Center of Materials and Nanomaterials, Rabat (Morocco)
Univ. Paris-Sud, Orsay (France). Inst. des Sciences Moléculaires d’Orsay; Univ. de Cergy-Pontoise, Cergy-Pontoise (France). Dépt. de Physique

In this work, we report results on the growth of an NaCl film on Ag(110) under ultrahigh vacuum conditions. At room temperature, low-energy electron diffraction and scanning tunneling microscopy show that the NaCl film forms a (4×1) superstructure. At RT, the film consists of small-sized islands that coalesce into larger islands at 410 K. These large islands preserve the (4×1) superstructure and cover the entire surface. The apparent heights obtained from the STM images show that the initial thickness of the NaCl islands is one atomic layer, and they present a very small height corrugation. The density functional theory calculations, with and without the inclusion of van der Waals effects, confirm the coexistence of two domains in agreement with the observed structure.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)