supported by the National Natural Science Foundation of China(Grant Nos.11774303 and 11574373);the financial support from“15th Graduate Research Innovation Project”from Yunnan University;financial support from the Joint Fund of Yunnan Provincial Science and Technology Department(Grant No.2019FY003008)。
For designing low-impedance magnetic tunnel junctions(MTJs),it has been found that tunneling magnetoresistance strongly correlates with the insulating barrier thickness,imposing a fundamental problem about the relatio...
Supported by the National Natural Science Foundation of China under Grant Nos 11574362,61210014,11374340 and 11474205;the Innovative Clean-Energy Research and Application Program of Beijing Municipal Science and Technology Commission under Grant No Z151100003515001;the National Key Technology R&D Program of China under Grant No 2016YFB0400302
Heterojunction phototransistors(HPTs)with scaling emitters have a higher optical gain compared to HPTs with normal emitters.However,to quantitatively describe the relationship between the emitter-absorber area ratio(A...
Supported by the National Natural Science Foundation of China under Grant Nos 61774154 and 51503196
A kind of n-type HoF_3-doped zinc oxide-based transparent conductive film has been developed by electron beam evaporation and studied under thermal annealing in air and vacuum at temperatures 100–500℃.Effective subs...
the Strategic Priority Research Program(A)of Chinese Academy of Sciences under Grant No XDA18000000
We fabricate high quality superconductor/ferromagnet/superconductor(SFS) Josephson junctions using epitaxial NbN/Ni_(60)Cu_(40)/NbN trilayer heterostructures. Both experimental measurements and theoretical calculation...
Supported by the National Natural Science Foundation of China under Grant Nos 61534004,61604112 and 61622405
We investigate the phonon limited electron mobility in germanium(Ge) fin field-effect transistors(FinFETs)with fin rotating within(001),(110),and(111)-oriented wafers. The coupled Schrodinger-Poisson equations are sol...
The screening dependence of superconducting state parameters (λ, μ*, Tc, α and NoV) of six alloys of aluminium doped MgB2 systems are studied in the BCS-Eliashberg-MeMillan framework by employing five forms of ...
Supported by the National Key Research and Development Program of China under Grant No 2016YFB0400100;the China Postdoctoral Science Foundation under Grant No 2015M582610
We investigate the threading dislocation(TD)density in N-polar and Ga-polar GaN films grown on sapphire substrates by metal-organic chemical vapor deposition.X-ray diffraction results reveal that the proportion of scr...
WNxfilms are deposited by reactive chemical vapor deposition at different amounts of nitrogen in gas mixtures.Experimental data demonstrate that nitrogen amount has a strong effect on microstructure, phase formation,t...
Supported by the National Natural Science Foundation of China under Grant Nos 11404410 and 11504105
Nonlinear optical (NLO) properties of anatase TiO2 with nanostructures of nanopaxticle (NP), nanowire (NW) and annealed nanowire (NWA) are studied by open-aperture and closed-aperture Z-scan techniques with a ...
Supported by the National Key Scientific Research Projects of China under Grant No 2015CB932400;the National Natural Science Foundation of China under Grant Nos 11504158,61474059,and U1432129;the Program for New Century Excellent Talents in University of Ministry of Education of China under Grant No NCET-11-1003;the Jiangxi Provincial'Ganpo Talentes 555Projects'
We explore the excitonic effects in chiral graphene nanoribbons (cGNRs), whose edges are composed alternatively of armchair-edged and zigzag-edged segments. For cGNRs dominated by armchair edges, their energy gaps and...