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Intercalation at the graphene/SiC interface provides a controlled route to stabilize atomically thin layers with properties distinct from their bulk counterparts. In this platform, the structure and stability of the intercalated phase…

The structural similarity between hexagonal boron nitride (h-BN) and graphene nanoribbons allows for the formation of heterojunctions with small chain stress. The combination of the insulation nature of the former and the quasi-metallic…

Understanding the contact between solid surfaces is a long standing problem which has a strong impact on the physics of many processes such as adhesion, friction, lubrication and wear. Experimentally, the investigation of solid/solid…

材料科学 · 物理学 2019-02-25 F. Rieutord , C. Rauer , H. Moriceau

This research will examine the computational methods to calculate the nonlinear optical process of second harmonic generation (SHG) that will be hypothesized to be present during lithium ion insertion into silicon nanowires. First it will…

光学 · 物理学 2021-10-19 Donald C. Boone

Complex oxides exhibit many intriguing phenomena, including metal-insulator transition, ferroelectricity/multiferroicity, colossal magnetoresistance and high transition temperature superconductivity. Advances in epitaxial thin film growth…

强关联电子 · 物理学 2017-06-07 Hanghui Chen , Andrew J. Millis

The existence of bound charge transfer (CT) excitons at the interface of monolayer lateral heterojunctions has been debated in literature, but contrary to the case of interlayer excitons in vertical heterostructure their observation still…

Oxide two-dimensional electron gases (2DEGs) promise high charge carrier concentrations and low-loss electronic transport in semiconductors such as BaSnO$_{3}$ (BSO). ACBN0 computations for BSO/SrNbO$_{3}$ (SNO) interfaces show…

材料科学 · 物理学 2022-06-27 Sharad Mahatara , Suresh Thapa , Hanjong Paik , Ryan Comes , Boris Kiefer

MXene-based heterostructures have received considerable interest owing to their unique properties. Herein, we examine various heterostructures of a prototypical MXene and graphene using density functional theory. We find that the adhesion…

介观与纳米尺度物理 · 物理学 2019-02-27 Rui Li , Weiwei Sun , Cheng Zhan , Paul R. C. Kent , De-en Jiang

We report theoretical investigations on the role of interfacial bonding mechanism and its resulting structures to quantum transport in molecular wires. Two bonding mechanisms for the Au-S bond in an Au(111)/1,4-benzenedithiol(BDT)/Au(111)…

介观与纳米尺度物理 · 物理学 2014-12-01 Zhanyu Ning , Jingsi Qiao , Wei Ji , Hong Guo

Access to intrinsic properties of a 2D material is challenging due to the absence of a bulk that would dominate over surface contamination, and this lack of bulk also precludes effective conventional cleaning methods that are almost always…

材料科学 · 物理学 2024-10-28 Hao Wang , Milinda Randeniya , Austin Houston , Gerd Duscher , Gong Gu

Resonant X-ray scattering (RXS) is a spectroscopy where both the power of site selective diffraction and the power of local absorption spectroscopy regarding atomic species are combined. By virtue of the dependence on the core level state…

Interfacial reaction between iron and MgO has been studied in situ during deposition of iron on MgO surface, using soft x-ray absorption spectroscopy. High sensitivity of the technique which is capable of detecting even a sub monolayer of a…

材料科学 · 物理学 2019-02-20 Pramod Vishwakarma , Mukul Gupta , D. M. Phase , Ajay Gupta

Recent advances in experimental and computational techniques have allowed for an accurate description of the adsorption of ionic liquids on metallic electrodes. It is now well established that they adopt a multi-layered structure, and that…

材料科学 · 物理学 2016-03-15 Benjamin Rotenberg , Mathieu Salanne

This paper explores the interplay of momentum transfer and nonlinear optical processes through moir\'e phenomena. Momentum transfer plays a crucial role in the interaction between photons and matter. Here, we study stacked metasurfaces with…

光学 · 物理学 2024-06-21 Lun Qu , Wei Wu , Di Zhang , Chenxiong Wang , Lu Bai , Chenyang Li , Wei Cai , Mengxin Ren , Andrea Alù , Jingjun Xu

The design of low-dimensional organic-inorganic interfaces for the next generation of opto-electronic applications requires an in-depth understanding of the microscopic mechanisms ruling electronic interactions in these systems. In this…

The band offsets between crystalline and hydrogenated amorphous silicon (a-Si:H) are key parameters governing the charge transport in modern silicon hetrojunction solar cells. They are an important input for macroscopic simulators that are…

材料科学 · 物理学 2017-08-02 K. Jarolimek , E. Hazrati , R. A. de Groot , G. A. de Wijs

Charge acceleration during an intense light field application to solids attracts much attention as elementary processes in high-harmonic generation and photoelectron emission [1-7]. For manipulating such attosecond dynamics of charge,…

The surface/interface species in perovskite oxides play an essential role in many novel emergent physical phenomena and chemical processes. With low eigen-energy in the terahertz region, such species at buried interfaces remain poorly…

光学 · 物理学 2023-03-15 Yudan Su , Jiaming Le , Junying Ma , Long Cheng , Yuxuan Wei , Xiaofang Zhai , Chuanshan Tian

The performance of an organic-semiconductor device is critically determined by the geometric alignment, orientation, and ordering of the organic molecules. While an organic multilayer eventually adopts the crystal structure of the organic…

Hybrid multiferroics such as BiFeO$_3$ (BFO) and La$_{0.7}$Sr$_{0.3}$MnO$_3$ (LSMO) heterostructures are highly interesting functional systems due to their complex electronic and magnetic properties. One of the key parameters influencing…