About

The Instituto de Ciencia de Materiales de Madrid (ICMM) is an institute of the Consejo Superior de Investigaciones Cientificas (CSIC) (Spanish National Research Council) founded in December 1986, that belongs to the Area of Science and Technology of Materials, one of the eight Areas in which the CSIC divides its research activities.

 

Our mission is to create new fundamental and applied knowledge in materials of high technological impact, their processing and their transfer to the productive sectors at local, national and European scales (the true value of materials is in their use), the training of new professionals, and the dissemination of the scientific knowledge.

How to arrive

Forthcoming Events

DEC05/12:00

Proximity Effects Induced by Exchange and Spin-Orbit Coupling at Interfaces: Graphene on Metals and Metal-Organic Coordination Networks on Topological Insulators
Andrés Arnau  read more

DEC05/15:30

MATERIALS SCIENCE FACTORY REGULAR SEMINAR

Micro-second force spectroscopy

Mingdong Dong  read more

DEC12/12:00

Electronic stopping power from first principles
Emilio Artacho  read more

News

Cover CrystEngComm. H. Gavilán, M. Puerto Morales. Diseño Arturo Pérez.

Read more

Back Cover Adv. Func. Mat. E. Ruiz-Hitzky, A. Gómez-Avilés y P. Aranda, ICMM.

Read more

 

Unveiling the pentagonal nature of perfectly aligned single-and double-strand Si nano-ribbons on Ag(110)

Jorge I. Cerdá, Jagoda Slawinska, Guy Le Lay, Antonela C. Marele, José M. Gómez-Rodríguez and María E. Dávila

Carbon and silicon pentagonal low-dimensional structures attract a great interest as they may lead to new exotic phenomena such as topologically protected phases or increased spin–orbit effects. However, no pure pentagonal phase has yet been realized for any of them. Here we unveil through extensive density functional theory calculations and scanning tunnelling microscope simulations, confronted to key experimental facts, the hidden pentagonal nature of single- and double-strand chiral Si nano-ribbons perfectly aligned on Ag(110) surfaces whose structure has remained elusive for over a decade. Our study reveals an unprecedented one-dimensional Si atomic arrangement solely comprising almost perfect alternating pentagons residing in the missing row troughs of the reconstructed surface. We additionally characterize the precursor structure of the nano-ribbons, which consists of a Si cluster (nano-dot) occupying a silver di-vacancy in a quasi-hexagonal configuration. The system thus materializes a paradigmatic shift from a silicene-like packing to a pentagonal one.

Nature Communications

(a,b) Top and perspective views of the optimized low-coverage nano-dot structure comprising 10 Si atoms located in a Ag di-vacancy and following a quasi-hexagonal arrangement. (c) (18 × 24)Â2 simulated STM topographic image for this structure and, (d) line profile along the blue solid line in c.

Publications Highlights

ICMM-2016 - Sor Juana Inés de la Cruz, 3, Cantoblanco, 28049 Madrid, Spain. Tel: +34 91 334 9000. Fax: +34 91 372 0623. info@icmm.csic.es