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We determine the wavefunctions of electrons bound to a positively charged mesoscopic metallic cluster covered by an insulating surface layer. The radius of the metal core and the thickness of the insulating surface layer are of the order of…

介观与纳米尺度物理 · 物理学 2007-05-23 K. Dietrich , M. Garny , K. Pomorski

We demonstrate the imaging of ferromagnetic carbon steel samples and we detect the thinning of their profile with a sensitivity of 0.1 mm using a Cs radio-frequency atomic magnetometer. Images are obtained at room temperature, in…

仪器与探测器 · 物理学 2018-08-10 Patrick Bevington , Rafal Gartman , Witold Chalupczak , Cameron Deans , Luca Marmugi , Ferruccio Renzoni

We have used oxygen ions irradiation to generate controlled structural disorder in thin manganite films. Conductive atomic force microscopy CAFM), transport and magnetic measurements were performed to analyze the influence of the…

材料科学 · 物理学 2015-05-14 M. Sirena , A. Zimmers , N. Haberkorn , E. Kaul , L. B. Steren , J. Lesueur , T. Wolf , Y. Le Gall , J. -J. Grob , G. Faini

Complexity in materials often arises from competing interactions at the atomic length scale. One such example are the strongly correlated heavy-fermion materials where the competition between Kondo screening and antiferromagnetic ordering…

强关联电子 · 物理学 2015-05-18 Jeremy Figgins , Dirk K. Morr

Radiation damage is an unavoidable process when performing structural investigations of biological macromolecules with X-ray sources. In crystallography this process can be limited through damage distribution in a crystal, while for single…

Residual stress engineering is very widely used in the design of new advanced lightweight materials. For metallic glasses the attention has been on structural changes and rejuvenation processes. High energy scanning X-ray diffraction strain…

材料科学 · 物理学 2022-10-12 D. Şopu , F. Spieckermann , X. L. Bian , S. Fellner , J. Wright , M. Cordill , C. Gammer , G. Wang , M. Stoica , J. Eckert

The mechanical properties of crystalline materials can be substantially modified under confinement. Such modified macroscopic properties are usually governed by the altered microstructures and internal stress fields. Here, we use a parallel…

软凝聚态物质 · 物理学 2016-10-25 Neil Y. C. Lin , Itai Cohen

Molecular electronics studies have advanced from early, simple single-molecule experiments at cryogenic temperatures to complex and multifunctional molecules under ambient conditions. However, room-temperature environments increase the risk…

介观与纳米尺度物理 · 物理学 2025-06-12 Guillem Pellicer , Carlos Sabater

When a planet falls onto the surface of its host star, the added high-metallicity material does not remain in the surface layers, as often assumed, but is diluted into the interior through fingering (thermohaline) convection. Until now,…

太阳与恒星天体物理 · 物理学 2010-11-16 Pascale Garaud

Insufficient steel quality in mass production can cause extremely costly damage to tooling, production downtimes and low quality products. Automatic, fast and cheap strategies to estimate essential material properties for quality control,…

机器学习 · 计算机科学 2022-06-14 Michiel Straat , Kevin Koster , Nick Goet , Kerstin Bunte

We study the level-statistics of a disordered system undergoing the Anderson type metal-insulator transition. The disordered Hamiltonian is a sparse random matrix in the site representation and the statistics is obtained by taking an…

无序系统与神经网络 · 物理学 2007-05-23 Pragya Shukla

The rapidly growing class of atomically thin and tunable van der Waals materials is intensely investigated both in the context of fundamental science and for new technologies. There is in this connection a widespread need for new ways to…

介观与纳米尺度物理 · 物理学 2026-04-28 Shanshan Ding , Jose Antonio Valerrama Botia , Aleksi Julku , Zhigang Wu , G. M. Bruun

This short paper presents the potential of using machine learning to predict materials behaviour in the context of hydrogen interaction with steel. Effort has been made to understand the quality, and amount of data needed to get improved…

材料科学 · 物理学 2021-10-22 M. Amir Siddiq

High traffic touch surfaces such as doorknobs, countertops, and handrails can be transmission points for the spread of pathogens, emphasizing the need to develop materials that actively self-sanitize. Metals are frequently used for these…

Single particle states in a chain with quasiperiodic potential show a metal-insulator transition upon the change of the potential strength. We consider two particles with local interaction in the single particle insulating regime. The two…

量子物理 · 物理学 2015-06-03 Sergej Flach , Mikhail Ivanchenko , Ramaz Khomeriki

We theoretically investigate the ground state properties of ferromagnetic metal/conjugated polymer interfaces. The work is partially motivated by recent experiments in which injection of spin polarized electrons from ferromagnetic contacts…

材料科学 · 物理学 2009-11-07 S. J. Xie , K. H. Ahn , D. L. Smith , A. R. Bishop , A. Saxena

Significant progress has been made for assessing the influence of porosity on the performance metrics for cast components through various modeling techniques. However, a computationally efficient framework to account for porosity with…

计算工程、金融与科学 · 计算机科学 2022-04-05 Shiguang Deng , Carl Soderhjelm , Diran Apelian , Krishnan Suresh

Scattering of carriers with ionized impurities governs charge transport in doped semiconductors. However, electron interactions with ionized impurities cannot be fully described with quantitative first-principles calculations, so their…

材料科学 · 物理学 2021-10-12 I-Te Lu , Jin-Jian Zhou , Jinsoo Park , Marco Bernardi

The phases and excitation spectrum of an easy-axis ferromagnetic chain of S=1/2 magnetic impurities built on the top of a clean metallic surface are studied. As a function of the (Kondo) coupling to the metallic surface and at low…

介观与纳米尺度物理 · 物理学 2013-02-26 Alejandro M. Lobos , Miguel A. Cazalilla

A method is presented for the evaluation of the permeability-porosity relationship in a low-permeability porous material using the results of a single transient test. This method accounts for both elastic and non-elastic deformations of the…

地球物理 · 物理学 2009-03-16 Siavash Ghabezloo , Jean Sulem , Jérémie Saint-Marc