Supported by the National Natural Science Foundation of China(Grant Nos.11634009,61874069,1177041280 and 11574336);Shanghai Science and Technology Foundation(Grant No.18JC1420401)。
Strained Hg Te thin films are typical three-dimensional topological insulator materials.Most works have focused on Hg Te(100)films due to the topological properties resulting from uniaxial strain.In this study,straine...
Supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences under Grant No 2015094;the National Natural Science Foundation of China under Grant Nos 61204012,61274049 and 61376058;the Beijing Natural Science Foundation under Grant Nos 4142053 and 4132070;the Beijing Nova Program under Grant Nos 2010B056 and xxhz201503
We report the growth of InSb layers directly on GaAs (001) substrates without any buffer layers by molecular beam epitaxy (MBE). Influences of growth temperature and V/Ⅲ flux ratios on the crystal quality, the su...
Supported by the National Basic Research Program of China under Grant 2007CB924901, Shanghai Leading Academic Dis- cipline Project (B411), the National Natural Science Foundation of China under Grant No 60677022, and Shanghai Municipal Commission of Science and Technology Project under Grant Nos 07DZ22943 and 08JC1409000.
Modulated photoluminescence spectra have been performed to investigate the impurity activation in MBE-grown As-doped Hg1-xCdxTe (x ≈ 0.3). The results show that the doped As mainly acting as donors in the as-grown ...
We present a multi-level growth model that yields some of the key features of perovskite oxide film growth as observed in the reflection high energy electron diffraction (RHEED) and ellipsometry studies. The model d...
Supported by the National High Technology Research and Development Programme of China under Grant No 2002AA313040 and the National Natural Science Foundation of China under Grant No 60136010.
InCaAsSb/AlGaAsSb multi quantum well ridge waveguide lasers at 2.1 μm wavelength are fabricated by using molecular beam epitaxy. Continuous wave performance and tunability of the lasers are evaluated in a wide temper...
4.2MeV ^(7)Li channeling technique,laser Raman scattering spectrometry,and TEM have been utilized to study the regrowth of MBE-GaAs films of〜μm thick on Si substrates by Si^(+) implantation(0.6-2.6MeV)and subsequent ...
With the use of RHEED,a new surface reconstruction Al_(x)Ga_(1-x)As(001)-(3 x 2)induced by Si dopant,and a Si dopant effect for suppressing island growth and promoting layer by layer growth are observed.