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Topic Area: Electron Physics

Displaying records 1 to 10 of 100 records.
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1. 3D Monte Carlo modeling of the SEM: Are there applications to photomask metrology?
Topic: Electron Physics
Published: 10/23/2014
Authors: John S Villarrubia, Andras Vladar, Michael T Postek
Abstract: The ability to model the effect of fields due to charges trapped in insulators with floating conductors has been added to JMONSEL (Java Monte Carlo simulator for Secondary Electrons) and applied to a simple photomask metal on glass geometry. These ca ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917204

2. Nanoscale Imaging of Photocurrent and Efficiency in CdTe Solar Cells
Topic: Electron Physics
Published: 10/15/2014
Authors: Leite Marina, maxim abashin, Henri J Lezec, anthony gianfrancesco, Talin Alec, Nikolai B Zhitenev
Abstract: The local collection characteristics of grain interiors and grain boundaries in thin film CdTe polycrystalline solar cells are investigated using scanning photocurrent microscopy. The carriers are locally generated by light injected through a small ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916527

3. Weak Localization, Spin Relaxation, and Spin-Diffusion: Crossover Between Weak and Strong Rashba Coupling Limits
Topic: Electron Physics
Published: 9/17/2014
Authors: Yasufumi Araki, Guru Bahadur S Khalsa, Allan H. MacDonald
Abstract: Disorder scattering and spin-orbit coupling are together responsible for the diffusion and relaxation of spin-density in time-reversal invariant systems. We study spin-relaxation and diffusion in a two-dimensional electron gas with Rashba spin-orbit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916181

4. Absolute pulse energy measurements of soft x-rays at the Linac Coherent Light Source
Topic: Electron Physics
Published: 8/25/2014
Authors: Uwe Arp, Alexander Sorokin, Ulf Jastrow, Pavle Jurani?, Svea Kreis, Mathias Richter, Yiping Feng, Dennis Nordlund, Kai Tiedtke, Philip Heimann, Bob Nagler, Hae Ja Lee, Stephanie Mack, Marco Cammarata, Oleg Krupin, Marc Messerschmidt, Michael Holmes , Michael Rowen, William Schlotter, Stefan Moeller, Joshua Turner
Abstract: This paper reports novel measurements of x-ray optical radiation on an absolute scale from a recently developed source of radiation generated in the soft x-ray regime of a free electron laser. We give a brief description of the physics behind the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916074

5. Interface scattering in polycrystalline thermoelectrics
Topic: Electron Physics
Published: 3/24/2014
Authors: Adrian Popescu, Paul M Haney
Abstract: We study the effect of electron and phonon interface scattering on the thermoelectric properties of disordered, polycrystalline materials (with grain sizes larger than electron and phonons' mean free path). Interface scattering of electrons is treat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915037

6. Current induced torques between ferromagnets and compensated antiferromagnets: symmetry and phase coherence effects.
Topic: Electron Physics
Published: 2/19/2014
Authors: Paul M Haney, Karthik Prakhya, Adrian Popescu
Abstract: It is shown that the current-induced torques between a ferromagnetic layer and an antiferromagnetic layer with a compensated interface vanish when the ferromagnet is aligned with an axis of spin-rotation symmetry of the antiferromagnet. For properl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914907

7. Current-induced torques and interfacial spin-orbit coupling
Topic: Electron Physics
Published: 12/19/2013
Authors: Kyung-Jin Lee, H.-W. Lee, Aurelien Manchon, Mark D Stiles, Paul M Haney
Abstract: In bilayer systems consisting of an ultrathin ferromagnetic layer adjacent to a metal with strong spin-orbit coupling, an applied in-plane current induces torques on the magnetization. The torques that arise from spin-orbit coupling are of particul ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914557

8. Dirac fermion heating, current scaling, and direct insulator-quantum Hall transition in multi-layer epitaxial graphene
Topic: Electron Physics
Published: 8/1/2013
Authors: Randolph E Elmquist, Fan-Hung Liu, Chang-Shun Hsu, Chiashain Chuang, Tak-Pong Woo, Lung-I Huang Huang, Chi-Te Laing, Yasuhiro Fukuyama, Yanfei Yang
Abstract: We have performed magnetotransport measurements on multi-layer epitaxial graphene. By increasing the driving current I through our graphene devices while keeping the bath temperature fixed, we are able to study Dirac fermion heating and current scali ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914323

9. Two-dimensional transport and screening in topological insulator surface states
Topic: Electron Physics
Published: 6/6/2012
Authors: Shaffique Adam, Euyheon Hwang, Sankar Das Sarma
Abstract: We study the surface states of Bi2Se3 close to the topologically protected crossing point. Close to charge neutrality, local fluctuations in carrier density result in electron and hole puddles that dominate the electronic properties of these materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910440

10. Characteristics of Graphene for Quantized Hall Effect Measurements
Topic: Electron Physics
Published: 6/1/2012
Authors: Randolph E Elmquist, Mariano A. Real, Irene G. Calizo, Brian G Bush, Tian T. Shen, Nikolai Nikolayevich Klimov, David B Newell, Angela R Hight Walker, Randall M. Feenstra
Abstract: This paper describes concepts and measurement techniques necessary for characterization of graphene in the development of graphene-based quantized Hall effect (QHE) devices and resistance standards. We briefly contrast the properties of graphene prod ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910365



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