Topological Physics with Mercury Telluride

2021 ◽  
pp. 225-241
Author(s):  
Saquib Shamim ◽  
Hartmut Buhmann ◽  
Laurens W. Molenkamp
Keyword(s):  
2004 ◽  
Vol 269 (2-4) ◽  
pp. 317-323 ◽  
Author(s):  
H. Song ◽  
K. Cho ◽  
H. Kim ◽  
J.S. Lee ◽  
B. Min ◽  
...  

2014 ◽  
Vol 20 (5) ◽  
pp. 3415-3420 ◽  
Author(s):  
Fatemeh Sadat Sangsefidi ◽  
Masoud Salavati-Niasari ◽  
Mahdiyeh Esmaeili-Zare

1983 ◽  
Vol 12 (5) ◽  
pp. 879-889 ◽  
Author(s):  
J. B. Clegg ◽  
J. B. Mullin ◽  
K. J. Timmins ◽  
G. W. Blackmore ◽  
G. L. Everett ◽  
...  

1969 ◽  
Vol 20 (164) ◽  
pp. 225-244 ◽  
Author(s):  
T. Alper ◽  
G. A. Saunders

2004 ◽  
Vol 03 (03) ◽  
pp. 393-401 ◽  
Author(s):  
S. RATH ◽  
A. K. DASH ◽  
S. N. SAHU ◽  
S. NOZAKI

Mercury Telluride ( HgTe ) nanocrystals with a mean size of 5.35 nm have been synthesized by an electrochemical technique. Structural analysis by transmission electron microscopy and glancing angle X-ray diffraction studies indicate the presence of cubic phase HgTe nanocrystals in the deposit. Optical absorption measurements reveal two well resolved excitonic peaks around 578.5 nm and 550 nm attributed to heavy hole valence band (HVB)–conduction band (CB) and light hole valence band (LVB)–CB transitions, respectively, and suggest a band opening of bulk inverted narrow band gap HgTe as a result of strong quantum confinement effect (QCE). Visible photoluminescence (PL) of HgTe nanocrystals indicates free exciton transition around 579.5 nm as observed from the PL measurement at 300 K along with a bound exciton dominated band around 588 nm. Micro-Raman measurements at 300 K indicate the 1LO vibrational mode at 142.6 cm-1 shifted by 6 cm-1 from its standard bulk value and confirm the QCE.


Sign in / Sign up

Export Citation Format

Share Document