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arXiv 1501.02438cond-mat.mtrl-sci
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低能离子溅射Ta表面自组织纳米结构的动力学蒙特卡罗模拟

Kinetic Monte Carlo simulations of self organized nanostructures on Ta Surface Fabricated by Low Energy Ion Sputtering

Shalik Ram Joshi, Trilochan Bagarti, Shikha Varma

摘要:

用低能离子束轰击的表面经常显示出自组装图案和准周期结构的发展。采用动力学蒙特卡罗模拟对离子溅射钽表面进行了模拟。在弛豫过程中引入了弱非线性,结果表明,由非线性哈密顿量产生的正Schwoebel势垒在描述离子轰击钽表面时是必要的。此外,它们的标度指数表明存在KPZ以外的类。

英文摘要:

Surfaces bombarded with low energy ion beams often display development of self assembled patterns and quasi-periodic structures. Kinetic Monte Carlo simulations have been performed to describe ion sputtered Tantalum surfaces. A weak nonlinearity in the relaxation process has been introduced and the results show that the Positive Schwoebel barrier, produced by the nonlinear Hamiltonian, is necessary in describing ion bombarded Tantalum surfaces. Furthermore, their scaling exponents suggest presence of a class other than KPZ.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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