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Moiré superlattice modulations in single-unit-cell FeTe films grown on NbSe2 single crystals 下载免费PDF全文
Han-Bin Deng 《中国物理 B》2021,30(12):126801-126801
Interface can be a fertile ground for exotic quantum states, including topological superconductivity, Majorana mode, fractal quantum Hall effect, unconventional superconductivity, Mott insulator, etc. Here we grow single-unit-cell (1UC) FeTe film on NbSe2 single crystal by molecular beam epitaxy (MBE) and investigate the film in-situ with a home-made cryogenic scanning tunneling microscopy (STM) and non-contact atomic force microscopy (AFM) combined system. We find different stripe-like superlattice modulations on grown FeTe film with different misorientation angles with respect to NbSe2 substrate. We show that these stripe-like superlattice modulations can be understood as moiré pattern forming between FeTe film and NbSe2 substrate. Our results indicate that the interface between FeTe and NbSe2 is atomically sharp. By STM-AFM combined measurement, we suggest that the moiré superlattice modulations have an electronic origin when the misorientation angle is relatively small (≤ 3°) and have structural relaxation when the misorientation angle is relatively large (≥ 10°). 相似文献
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本文对丁夏畦、丁毅著《Hermite展开与广义函数》一书作简单介绍并谈读后感,该书给出了广义函数理论新发展的一个清晰的轮廓,是关于Schwartz广义函数理论的最新研究成果,所提出的弱函数概念可视为对华罗庚先生相关研究工作的继承与创新。 相似文献
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(朱长江)(赵会江)EXISTENCEOFGLOBALSMOOTHSOLUTIONSFORTWOIMPORTANTNONSTRICTLYQUASILINEARHYPERBOLICSYSTEMS¥ZhuChangjiang;ZhaoHuijang(Wu... 相似文献
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一类非严格双曲型守恒律整体连续解的存在性 总被引:4,自引:1,他引:3
该文利用初值扰动法,讨论了一类非严格双曲型守恒律Cauchy问题整体连续解的存在性.这类方程包括了等熵气体动力学方程组.一个典型的变形方程组,弹性力学方程组,二次流守恒律和旋转退化方程等有意义的模型. 相似文献
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This paper is concerned with the initial boundary value problem for a vis-coelastic model with relaxation. Under the only assumption that the C^0-norm of theinitial data is small, without smallness hypothesis for the C^1-norm, the existence of theglobal smooth solution to the corresponding initial boundary value problem is proved.The analysis is based on some a priori estimates obtained by the “maximum principle” offirst-order quasilinear hyperbolic system. 相似文献
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DECAY RATES AND CONVERGENCE OF SOLUTIONS TO SYSTEM OF ONE-DIMENSIONAL VISCOELASTIC MODEL WITH DAMPING 总被引:1,自引:0,他引:1
This paper considers the asymptotic behavior of solutions to the system of onedimensional viscoelastic model with damping and prove that the corresponding solutions time-asymptotically behave like nonlinear diffusion wave as in [4,11]. In addition, It is also shown that the system of one-dimensional viscoelastic model with damping is a viscosity approximation of a hyperbolic conservation laws with damping. 相似文献
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朱长江 《中国科学A辑(英文版)》2003,46(4)
This paper studies the asymptotic behavior of weak entropy solutions to the Cauchy problem of the so-called p-system with damping. The convergence rates to nonlinear diffusion waves for weak entropy solutions are obtained in L∞-norm or L2-norm. These convergence rates are the same to the decay rates of smooth solution obtained by Nishihara. They are proved by using the vanishing viscosity method and the elementary L2-energy method. 相似文献
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本文讨论一个粘弹性模型的奇异初始值问题 .首先 ,给出了该问题的一个可容许解的定义 ,然后证明了该问题存在一个上述意义下的可容许解 相似文献
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本文通过引入函数变换,借助极值原理估界,得到了一类具有真正大初值的具对角形式的n*n非齐次拟线性双曲型方程组Cauchy问题整体光滑解的存在性。 相似文献