✦ LIBER ✦

Nano-scale dislocation patterning in PbTe on PbSe (1 0 0) heteroepitaxy studied by UHV scanning tunneling microscopy

✍ Scribed by K Wiesauer; G Springholz

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 181 KB
Volume: 13
Category: Article
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(02)00339-9

No coin nor oath required. For personal study only.

✦ Synopsis

Strain relaxation in the heteroepitaxial system PbTe on PbSe (1 0 0) is studied using scanning tunnelling microscopy. It is shown that a 2D surface morphology is sustained for all PbTe layer thicknesses, and that strain relaxation takes place by pure edge-type misÿt dislocations. The dislocations are found to form an extremely regular square network. Its uniformity is based on the existence of a high dislocation mobility within the interface and an e ective repulsive interaction between neighbouring dislocations. Because of its high regularity this nano-scale dislocation pattern could serve as template for the direct synthesis of self-assembled nanostructures.

📜 SIMILAR VOLUMES

Electrodeposition of Ag and Pd on a reco

Electrodeposition of Ag and Pd on a reconstructed Au(1 1 1) electrode surface studied by in situ scanning tunneling microscopy

✍ Satoru Takakusagi; Ken Kitamura; Kohei Uosaki 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 534 KB

Electrochemical deposition of Ag and potential-induced structural change of the deposited Ag layer on a 23 × √ 3 reconstructed surface of Au(1 1 1) electrode were followed by in situ scanning tunneling microscope (STM). A uniform Ag monolayer was formed on a reconstructed Au(1 1 1) surface in a 50-m

Quasi-one-dimensional In atomic chains o

Quasi-one-dimensional In atomic chains on Si(1 1 1) at low temperature studied by reflection high-energy positron diffraction and scanning tunneling microscopy

✍ M. Hashimoto; Y. Fukaya; A. Kawasuso; A. Ichimiya 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 387 KB

We have investigated a quasi-one-dimensional structure of Si(1 1 1)-8 Â 2-In surface using reflection high-energy positron diffraction (RHEPD) and scanning tunneling microscopy (STM). From the RHEPD rocking curve analyses, we confirmed the formation of the In hexagon structure proposed by Gonza ´lez