EPJ B – Au and Cu as building blocks of high-density memory devices

Gold and copper atoms adsorbed on a NaCl surface behave as isolated atoms and complex electronic interactions with the surface are negligible. A study by a group of Brazilian researchers uses first-principles simulations to measure the electronic and magnetic properties of gold and copper atoms adsorbed on NaCl(001) surfaces, as well as the modifications in these properties upon charge injection.

The results presented in EPJ B show that neutral Au and Cu adatoms on NaCl(001) interact weakly with the ionic substrate. Magnetization values are close to those of the corresponding isolated atoms, with spatial distributions concentrated mainly around the adatoms. The magnetization comes from the unfilled s valence orbital of the adatoms, and its value drops to zero when a single electron is injected in the adatom and fills its s shell.

Quantifying and manipulating the magnetic moments of the adsorbed atoms is essential to exploit the these systems for producing ultra-high density magnetic memory devices. Experimentalists have already shown the feasibility of manipulating the adatom charge and magnetization with an STM tip.

To read the full paper “Au and Cu Atoms on NaCl(001): a single-atom based memory device prototype?” by A.S. Martins et al., Eur. Phys. J. B 78, 543–546 (2010) click here.

This was our first experience of publishing with EPJ Web of Conferences. We contacted the publisher in the middle of September, just one month prior to the Conference, but everything went through smoothly. We have had published MNPS Proceedings with different publishers in the past, and would like to tell that the EPJ Web of Conferences team was probably the best, very quick, helpful and interactive. Typically, we were getting responses from EPJ Web of Conferences team within less than an hour and have had help at every production stage.
We are very thankful to Solange Guenot, Web of Conferences Publishing Editor, and Isabelle Houlbert, Web of Conferences Production Editor, for their support. These ladies are top-level professionals, who made a great contribution to the success of this issue. We are fully satisfied with the publication of the Conference Proceedings and are looking forward to further cooperation. The publication was very fast, easy and of high quality. My colleagues and I strongly recommend EPJ Web of Conferences to anyone, who is interested in quick high-quality publication of conference proceedings.

On behalf of the Organizing and Program Committees and Editorial Team of MNPS-2019, Dr. Alexey B. Nadykto, Moscow State Technological University “STANKIN”, Moscow, Russia. EPJ Web of Conferences vol. 224 (2019)

ISSN: 2100-014X (Electronic Edition)

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