scholarly journals Band gap determination of HgCdTe by ultra high vacuum scanning tunneling spectroscopy

2013 ◽  
Vol 32 (2) ◽  
pp. 145
Author(s):  
Xiu-Rong REN ◽  
Fang-Xing ZHA
Keyword(s):  
Band Gap ◽  
High Vacuum ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Ultra High Vacuum ◽  
Scanning Tunneling

STS INVESTIGATIONS OF METALLIC NANOSTRUCTURES DEPOSITED ON Bi2Te3

2007 ◽  
Vol 14 (03) ◽  
pp. 357-360
Author(s):  
SZYMON WINIARZ ◽  
PIOTR BISKUPSKI ◽  
STANISLAW SZUBA ◽  
SLAWOMIR MIELCAREK ◽  
RYSZARD CZAJKA
Keyword(s):  
High Vacuum ◽  
Metallic Nanostructures ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Ultra High Vacuum ◽  
Electron Gun ◽  
Scanning Tunneling ◽  
Superlattice Structure ◽  
Potential Applications ◽  
Subsequent Calculation

Bi 2 Te 3 has attracted attention due to its potential applications in the microfabrication of integrated thermoelectric devices. It is also interesting to study the metallization process of this compound. Metallic nanostructures were deposited by means of an electron gun evaporator in ultra high vacuum (UHV) conditions (10-8 Pa) on the freshly cleaved 0001 surface of the crystal Bi 2 Te 3. Measurements were conducted using the commercially available Omicron UHV scanning tunneling microscope (STM). Scanning tunneling spectroscopy (STS) measurements were performed using current imaging tunneling spectroscopy (CITS), and subsequent calculation of the dI/dV maps. Metallic characteristics were observed on nickel islands since early stages of the growth. CITS and dI/dV maps showed distinct contrast between the substrate and metallic islands. Similar contrast was not observed in the case of titanium, most probably due to an intercalation process. Occurring of such a process was confirmed by the appearance of the superlattice structure.

scholarly journals Band gap of theGe(111)c(2×8)surface by scanning tunneling spectroscopy

2006 ◽  
Vol 73 (3) ◽  
Author(s):  
R. M. Feenstra ◽  
J. Y. Lee ◽  
M. H. Kang ◽  
G. Meyer ◽  
K. H. Rieder
Keyword(s):  
Band Gap ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling

Determination of Band Offsets in Heterostructured Colloidal Nanorods Using Scanning Tunneling Spectroscopy

Nano Letters ◽  
2008 ◽  
Vol 8 (9) ◽  
pp. 2954-2958 ◽  
Author(s):  
Dov Steiner ◽  
Dirk Dorfs ◽  
Uri Banin ◽  
Fabio Della Sala ◽  
Liberato Manna ◽  
...  
Keyword(s):  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Band Offsets

scholarly journals Переход металл-полупроводник в нанопленках иттербия, индуцированный адсорбированными молекулами кислорода

2021 ◽  
Vol 91 (7) ◽  
pp. 1189
Author(s):  
М.В. Кузьмин ◽  
М.А. Митцев
Keyword(s):  
Electronic Structure ◽  
Crystal Lattice ◽  
Band Gap ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Quantum States ◽  
Scanning Tunneling ◽  
Bonding Type ◽  
First Time

The influence of nondissociative adsorption of oxygen molecules on the electronic structure of ytterbium films with the thickness of 16 monolayers (6.08 nm) has been studied for the first time by using scanning tunneling spectroscopy. It is established that the adsorption of O2 molecules induces the metal-semiconductor transition in ytterbium. As a result of this transition, the quantum states have disappeared in the films, which evidences for a change of bonding type in the ytterbium crystal lattice, as well as the band gap of ~0.72 eV has opened.

Electronic band gap of flame-formed carbon nanoparticles by scanning tunneling spectroscopy

2020 ◽  
Author(s):  
Gianluigi De Falco ◽  
Giancarlo Mattiello ◽  
Mario Commodo ◽  
Patrizia Minutolo ◽  
Xian Shi ◽  
...  
Keyword(s):  
Band Gap ◽  
Carbon Nanoparticles ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Electronic Band ◽  
Electronic Band Gap

Comparative Studies of Pb/Cu(001) by TEM, AFM and STM

1998 ◽  
Vol 528 ◽  
Author(s):  
Franck Bocquet ◽  
Camille Cohen ◽  
Didier Schmaus ◽  
André Rocher ◽  
Jacques Crestou ◽  
...  
Keyword(s):  
Accurate Determination ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Transmission Electron ◽  
Specific Orientation

AbstractThe same specimen of Pb/Cu grown under Ultra High Vacuum (UHV) conditions has been investigated by Scanning Tunneling Microscopy (STM), Atomic Force Microscopy (AFM) and Transmission Electron Microscopy (TEM). We show that the information obtained by these techniques is consistent when comparable, and complementary. In particular, three different morphologies of Pb islands with specific orientation relationship are observed; AFM reveals the faceted shape of the islands; STM permits an accurate determination of the atomic structure of the facets; TEM moir6 patterns reveal that Pb islands are well relaxed.

scholarly journals Local band gap modulations in non-stoichiometricV2O3films probed by scanning tunneling spectroscopy

2008 ◽  
Vol 77 (12) ◽  
Author(s):  
V. Simic-Milosevic ◽  
N. Nilius ◽  
H.-P. Rust ◽  
H.-J. Freund
Keyword(s):  
Band Gap ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling
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