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We have investigated the Co-doping dependence of the structural, transport, and magnetic properties of \epsilon-FeCoSi epilayers grown by molecular beam epitaxy on silicon (111) substrates. Low energy electron diffraction, atomic force…

材料科学 · 物理学 2015-06-16 P. Sinha , N. A. Porter , C. H. Marrows

Si/Ge heteroepitaxial dots under tensile strain are grown on nanostructured Ge substrates produced by high-temperature flash heating exploiting the spontaneous faceting of the Ge(001) surface close to the onset of surface melting. A very…

介观与纳米尺度物理 · 物理学 2019-04-18 L. Persichetti , M. Fanfoni , B. Bonanni , M. De Seta , L. Di Gaspare , C. Goletti , L. Ottaviano , A. Sgarlata

Silicon-Germanium (Si$_{1-x}$Ge$_x$) layers are commonly used as stressors in the gate of MOSFET devices. They are expected to introduce a beneficial stress in the drift and channel regions to enhance the electron mobility. When reducing…

Epitaxial growth of III-V semiconductors on Si is a promising route for silicon photonics. Threading dislocations and the residual thermal stress generated during growth are expected to affect the thermal conductivity of the III-V…

材料科学 · 物理学 2019-03-27 Alejandro Vega-Flick , Daehwan Jung , Shengying Yue , John E. Bowers , Bolin Liao

In this work we investigate influence of substrate temperature on the surface morphology for substrate coverage below one monolayer. The model of film growth is based on random deposition enriched by limited surface diffusion. Also…

凝聚态物理 · 物理学 2007-05-23 K. Malarz

We report comprehensive x-ray diffraction studies of the crystal structure and epitaxy of thin films of the topological insulator Bi2Te3 grown on Si (1 1 1). The films are single crystals of high crystalline quality, which strongly depends…

材料科学 · 物理学 2012-12-04 Jihwey Park , Yeong-Ah Soh , G. Aeppli , S. R. Bland , Xie-Gang Zhu , Xi Chen , Qi-Kun Xue , Francois Grey

Growth of narrow-neck, epitaxial as well as non-epitaxial and nearly spherical Ge islands on air-exposed Si(111)-(7\times7) surfaces has been investigated by in-situ scanning tunnelling microscopy (STM) and ex-situ high resolution…

介观与纳米尺度物理 · 物理学 2011-10-20 K. Bhattacharjee , A. Roy , S. Roy , J. Ghatak , S. Mathew , P. V. Satyam , B. N. Dev

We studied the low temperature (T<130K) growth of Ag on Si(001) and Si(111) flat surfaces prepared by Si homo epitaxy with the aim to achieve thin metallic films. The band structure and morphology of the Ag overlayers have been investigated…

材料科学 · 物理学 2009-11-13 V. A. Gasparov , M. Riehl-Chudoba

The results of STM and RHEED studies of a thin Ge film grown on the Si/Si(001) epitaxial layers with different surface relief are presented. Process of the partial stress relaxation was accompanied by changes in the surface structure of the…

Co$_{2}$TiSi films were grown by molecular beam epitaxy on GaAs(001) and analyzed using reflection high-energy electron diffraction, and electron microscopy. In addition, X-ray diffraction was combined with lattice parameter calculations by…

材料科学 · 物理学 2019-07-12 B Jenichen , J Herfort , M Hanke , U Jahn , X Kong , M T Dau , A Trampert , H Kirmse , S C Erwin

We performed classical molecular dynamics simulations to investigate, from an atomistic point of view, the formation of dislocations during the epitaxial growth of Ge on Si. We show that simulations at 900 and 1000 K with deposition rates…

材料科学 · 物理学 2025-09-19 Luis Martín-Encinar , Luis A. Marqués , Iván Santos , Lourdes Pelaz

Thin epitaxial GaAs films, with thickness varying from 140 to 1000 nm and different Si doping levels, were grown at 650C by organometallic vapor phase epitaxy (OMVPE) on Ge substrates and extensively analyzed by low-temperature…

The morphological evolution and the effect of growth temperature on size, orientation and composition of molecular beam epitaxy grown Ge-Si islands on Si(5 5 12) surfaces have been investigated in the temperature range from room temperature…

材料科学 · 物理学 2012-12-06 J. K. Dash , A. Rath , R. R. Juluri , P. V. Satyam

Growth of large-scale graphene is still accompanied by imperfections. By means of a four-tip STM/SEM the local structure of graphene grown on SiC(0001) was correlated with scanning electron microscope images and spatially resolved transport…

介观与纳米尺度物理 · 物理学 2015-06-17 Jens Baringhaus , Frederik Edler , Christoph Neumann , Christoph Stampfer , Stiven Forti , Ulrich Starke , Christoph Tegenkamp

We present models of surfaces of crystals in an environment where molecular beam epitaxy (MBE) and related methods of crystal growth like atomic layer epitaxy (ALE) can be performed. Besides detailed models of reconstructed (001) surfaces…

材料科学 · 物理学 2007-05-23 Martin Ahr

Formation of topological quantum phase on conventional semiconductor surface is of both scientific and technological interest. Here, we demonstrate epitaxial growth of 2D topological insulator, i.e. quantum spin Hall (QSH) state, on Si(111)…

材料科学 · 物理学 2014-12-03 Miao Zhou , Wenmei Ming , Zheng Liu , Zhengfei Wang , Ping Li , Feng Liu

We study step flow growth of epitaxial graphene on 6H-SiC using a one dimensional kinetic Monte Carlo model. The model parameters are effective energy barriers for the nucleation and propagation of graphene at the SiC steps. When the model…

介观与纳米尺度物理 · 物理学 2015-05-30 Fan Ming , Andrew Zangwill

Terrace-sized, single-orientation graphene can be grown on top of a carbon buffer layer on silicon carbide by thermal decomposition. Despite its homogeneous appearance, a surprisingly large variation in electron transport properties is…

介观与纳米尺度物理 · 物理学 2023-03-21 Tobias A. de Jong , Luuk Visser , Johannes Jobst , Ruud M. Tromp , Sense Jan van der Molen

Scaling of surface fluctuations of polycrystalline CdTe/Si(100) films grown by hot wall epitaxy are studied. The growth exponent of surface roughness and the dynamic exponent of the auto-correlation function in the mound growth regime agree…

统计力学 · 物理学 2014-01-28 R. A. L. Almeida , S. O. Ferreira , T. J. Oliveira , F. D. A. Aarao Reis

Molecular beam epitaxy of Ge (111) thin films on epitaxial-Gd2O3/Si(111) substrates is reported, along with a systematic investigation of the evolution of Ge growth, and structural defects in the grown epilayer. While Ge growth begins in…