1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Study of Nb epitaxial growth on Cu(111) at sub-monolayer level
Rent:
Rent this article for
USD
10.1063/1.4759119
/content/aip/journal/jap/112/7/10.1063/1.4759119
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/7/10.1063/1.4759119
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Topography STM maps of Nb islands deposited on Cu (111) substrates at RT with coverages ranging from 0.1 to 0.4 AL. A preference for 2 AL tall islands is observed during the early stages of growth.

Image of FIG. 2.
FIG. 2.

(a) Topography STM map of Nb islands deposited on Cu (111) substrates at RT and annealed at 350 °C. (b) Differential conductance (dI/dU) map snapshot at a bias voltage of U = −0.2 V featuring Friedel electronic standing waves. (c) Topography and (d) dI/dU map for one of the Nb islands. (e) dI/dU curves measured on Nb islands and the Cu(111) substrate.

Image of FIG. 3.
FIG. 3.

(a) Topography STM map of Nb islands deposited on Cu (111) substrates at RT and annealed at 350 °C. (b) 2-D self-correlation of the above image clearly shows the periodicity of the lattice. (c) Sketches for the crystal lattice of Nb(110) (left), Nb lattice extracted from the STM images (center), hexagonal Nb surface structure (right), and Cu(111) (bottom). The interatomic distances extracted from (b) are remarkably close to a hexagonal Nb surface lattice with a = 3.3 Å. Molecular dynamics simulations at 600 K gives a lattice constant of 3.09 ± 0.24 Å.

Image of FIG. 4.
FIG. 4.

(a) Topography STM map of Nb islands deposited on Cu (111) substrates at RT and annealed at 600 °C. (b) Differential conductance (dI/dU) curves measured on the islands and on the substrate.

Image of FIG. 5.
FIG. 5.

(a) Topography STM map of Nb islands deposited on Cu (111) substrates at 350 °C. (b) Annealing at 600 °C promotes the formation of large islands on the surface.

Image of FIG. 6.
FIG. 6.

MD simulations for Nb nanoislands at temperatures ranging from 327 °C to 877 °C. Significant intermixing is found for temperatures higher than 327 °C.

Loading

Article metrics loading...

/content/aip/journal/jap/112/7/10.1063/1.4759119
2012-10-12
2014-04-23
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Study of Nb epitaxial growth on Cu(111) at sub-monolayer level
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/7/10.1063/1.4759119
10.1063/1.4759119
SEARCH_EXPAND_ITEM