Growth of van der Waals topological insulator thin films

Author(s):  
Stephanie Law
Nanoscale ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 1879-1885 ◽  
Author(s):  
Yumei Jing ◽  
Shaoyun Huang ◽  
Kai Zhang ◽  
Jinxiong Wu ◽  
Yunfan Guo ◽  
...  

High crystalline quality topological insulator Bi2Se3 thin films are grown by van der Waals epitaxy on fluorophlogopite mica substrates and the excellent transport properties of the as-grown films are extracted from the magnetotransport measurements.


2019 ◽  
Author(s):  
Henrik Pedersen ◽  
Björn Alling ◽  
Hans Högberg ◽  
Annop Ektarawong

Thin films of boron nitride (BN), particularly the sp<sup>2</sup>-hybridized polytypes hexagonal BN (h-BN) and rhombohedral BN (r-BN) are interesting for several electronic applications given band gaps in the UV. They are typically deposited close to thermal equilibrium by chemical vapor deposition (CVD) at temperatures and pressures in the regions 1400-1800 K and 1000-10000 Pa, respectively. In this letter, we use van der Waals corrected density functional theory and thermodynamic stability calculations to determine the stability of r-BN and compare it to that of h-BN as well as to cubic BN and wurtzitic BN. We find that r-BN is the stable sp<sup>2</sup>-hybridized phase at CVD conditions, while h-BN is metastable. Thus, our calculations suggest that thin films of h-BN must be deposited far from thermal equilibrium.


2019 ◽  
Vol 3 (7) ◽  
pp. 1462-1470 ◽  
Author(s):  
Weiwei Wei ◽  
Rohit L. Vekariy ◽  
Chuanting You ◽  
Yafei He ◽  
Ping Liu ◽  
...  

Highly dense thin films assembled from cellulose nanofibers and reduced graphene oxide via van der Waals interactions to realize ultrahigh volumetric double-layer capacitances.


2013 ◽  
Vol 102 (1) ◽  
pp. 012102 ◽  
Author(s):  
B. A. Assaf ◽  
T. Cardinal ◽  
P. Wei ◽  
F. Katmis ◽  
J. S. Moodera ◽  
...  

Nano Letters ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 8047-8053 ◽  
Author(s):  
Su Kong Chong ◽  
Kyu Bum Han ◽  
Akira Nagaoka ◽  
Ryuichi Tsuchikawa ◽  
Renlong Liu ◽  
...  

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