2D Mn2C6Se12 and Mn2C6S6Se6: Intrinsic Room-Temperature Dirac Spin Gapless Semiconductors and Perfect Spin Transport Properties

2020 ◽  
Vol 124 (29) ◽  
pp. 16127-16135 ◽  
Author(s):  
Xuming Wu ◽  
Yulin Feng ◽  
Si Li ◽  
Boqun Zhang ◽  
Guoying Gao
2016 ◽  
Vol 30 (23) ◽  
pp. 1650301
Author(s):  
Chunlong Xu ◽  
Zhen Wang ◽  
Lei Wang ◽  
Gang Shi ◽  
Zhaoyang Hou ◽  
...  

Spin-dependent transport properties of Fe3O4 spheres with diameters from 200 nm to 900 nm have been investigated and polyethylene glycol (PEG) exists on the surface of Fe3O4 particles. The nonlinear I–V curve became obvious with the increase of Fe3O4 diameter, which indicated the tunneling barrier height decreases with the increasing diameter. The magnetoresistance (MR) can reach −13% with an applied low field of 0.2 T at room temperature. With the diameter increase, the MR decreases and the required applied field increases. Moreover, the decrease of MR with the bias voltage increase can be attributed to the spin-dependent tunneling effect through the insulating surface layer of Fe3O4 and PEG.


2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Kohei Etou ◽  
Satoshi Hiura ◽  
Soyoung Park ◽  
Kazuya Sakamoto ◽  
Junichi Takayama ◽  
...  

Author(s):  
Haohao Sheng ◽  
Haoxiang Long ◽  
Guanzhen Zou ◽  
Dongmei Bai ◽  
Junting Zhang ◽  
...  

2011 ◽  
Vol 83 (24) ◽  
Author(s):  
Masashi Shiraishi ◽  
Yoshiya Honda ◽  
Eiji Shikoh ◽  
Yoshishige Suzuki ◽  
Teruya Shinjo ◽  
...  

2003 ◽  
Vol 793 ◽  
Author(s):  
Y. Amagai ◽  
A. Yamamoto ◽  
C. H. Lee ◽  
H. Takazawa ◽  
T. Noguchi ◽  
...  

ABSTRACTWe report transport properties of polycrystalline TMGa3(TM = Fe and Ru) compounds in the temperature range 313K<T<973K. These compounds exhibit semiconductorlike behavior with relatively high Seebeck coefficient, electrical resistivity, and Hall carrier concentrations at room temperature in the range of 1017- 1018cm−3. Seebeck coefficient measurements reveal that FeGa3isn-type material, while the Seebeck coefficient of RuGa3changes signs rapidly from large positive values to large negative values around 450K. The thermal conductivity of these compounds is estimated to be 3.5Wm−1K−1at room temperature and decreased to 2.5Wm−1K−1for FeGa3and 2.0Wm−1K−1for RuGa3at high temperature. The resulting thermoelectric figure of merit,ZT, at 945K for RuGa3reaches 0.18.


Small ◽  
2014 ◽  
pp. n/a-n/a ◽  
Author(s):  
Saumil Bandyopadhyay ◽  
Md. Iftekhar Hossain ◽  
Hasnain Ahmad ◽  
Jayasimha Atulasimha ◽  
Supriyo Bandyopadhyay

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