Stability of magnetic polarons in magnetic semiconductor single electron transistors: The effect of Coulomb interaction and external magnetic field

2012 ◽  
Vol 249 (11) ◽  
pp. 2244-2249 ◽  
Author(s):  
N. Lebedeva ◽  
A. Varpula ◽  
S. Novikov ◽  
P. Kuivalainen
Author(s):  
Cheng-Wei Jiang ◽  
I-Chih Ni ◽  
Yun-Lian Hsieh ◽  
Shien-Der Tzeng ◽  
Cen-Shawn Wu ◽  
...  

The Anderson insulating states in Au nanoparticle assembly are identified and studied under the application of magnetic fields and gate voltages. When the inter-nanoparticle tunneling resistance is smaller than the quantum resistance, the system showing zero Mott gap can be insulating at very low temperature. In contrast to Mott insulators, Anderson insulators exhibit great negative magnetoresistance, inferring charge de-localization in a strong magnetic field. When probed by the electrodes spaced by ~200 nm, they also exhibit interesting gate-modulated current similar to the multi-dot single electron transistors. These results reveal the formation of charge puddles due to interplay of disorder and quantum interference at low temperatures.


AIP Advances ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 105005
Author(s):  
Mitsuki Ito ◽  
Mamiko Yagi ◽  
Moe Shimada ◽  
Jun-ichi Shirakashi

2002 ◽  
Vol 41 (Part 1, No. 4B) ◽  
pp. 2574-2577 ◽  
Author(s):  
Kyung Rok Kim ◽  
Dae Hwan Kim ◽  
Suk-Kang Sung ◽  
Jong Duk Lee ◽  
Byung-Gook Park ◽  
...  

AIP Advances ◽  
2014 ◽  
Vol 4 (11) ◽  
pp. 117126 ◽  
Author(s):  
L. Arzubiaga ◽  
F. Golmar ◽  
R. Llopis ◽  
F. Casanova ◽  
L. E. Hueso

2004 ◽  
Vol 93 (16) ◽  
Author(s):  
A. Kogan ◽  
S. Amasha ◽  
D. Goldhaber-Gordon ◽  
G. Granger ◽  
M. A. Kastner ◽  
...  

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