Results 31 to 40 of about 78 (65)

Light-matter interaction in polar and strongly correlated oxides [PDF]

open access: yes
Les interaccions entre llum i matèria són omnipresents en la natura i tenen un paper crucial en l'enteniment del funcionament de l'univers. En el context de la física dels estats sòlids, aquestes interaccions són essencials tant per analitzar les ...
Ganguly, Saptam
core   +2 more sources

Role of electron-electron interactions in chiral 2DEGs [PDF]

open access: yes, 2008
textIn this thesis we study the effect of electron-electron interactions on Chiral two-dimensional electron gas (C2DEGs). C2DEGs are a very good description of the low-energy electronic properties of single layer and multilayer graphene systems.
Barlas, Yafis
core   +1 more source

Quantum wire networks with local Z2 symmetry [PDF]

open access: yes, 2005
16 pages, 9 figures, v.2 section IV D added,accepted for publication in PRBFor a large class of networks made of connected loops, in the presence of an external magnetic field of half flux quantum per loop, we show the existence of a large local symmetry
Kazymyrenko, K.   +2 more
core  

Reversing the sign of current-current correlations [PDF]

open access: yes, 2002
Current-correlations are a very sensitive probe of the fluctuations of small conductors. For non-interacting particles injected from thermal sources there is a simple connection between the sign of correlations and statistics: current-current ...
Buttiker, Markus
core  

Electrical, spectral and thermal analysis of yellow luminescent dots in InGaN green LEDs [PDF]

open access: yes, 2012
With this paper we present an extensive analysis of localized emission process that occur at low current densities in InGaN/GaN LEDs. The study was carried out by means of spatially resolved EL measurements performed at different temperatures and ...
VACCARI, SIMONE   +6 more
core  

Electron energy-loss spectroscopy: DFT modelling and application to experiment [PDF]

open access: yes, 2010
The all-electron density functional theory (DFT) code Wien2k has an established track record of modelling energy-loss near-edge structure (ELNES). The pseudopotential DFT code CASTEP can reproduce results found using Wien2k.
Seabourne, Che Royce
core  

Analysis of the crystalline structures of materials CuF2 and AgF2 materials using first principle simulations [PDF]

open access: yes, 2020
RESUMEN: Para entender las propiedades de los materiales sólidos, el primer paso consiste en analizar su estructura cristalina en condiciones ambiente.
Moreno Ceballos, Jorge
core  

Study of thermoelectric properties in nanostructured systems: possible conditions to optimize efficiency [PDF]

open access: yes, 2022
ilustraciones, graficasEl presente trabajo estudia y extiende, mediante argumentos de universalidad, el comportamiento térmico dentro del régimen Kondo, de las distintas propiedades termoeléctricas tales como: La termopotencia, la conductancia eléctrica
Aranguren Quintero, Daniel Felipe
core  

Study the effect of quenched disorder on the physical properties of manganites and study of the magnetocaloric effect metal alloys compound MnBi [PDF]

open access: yes, 2012
Le manuscrit présente des travaux relatifs à la caractérisation structurale, électrique et magnétique des matériaux manganites poly-cristallin, les manganites qui présentent un intérêt industriel croissant compte tenu de ses nombreux domaines d ...
Issaoui, Fatma
core  

Wigner crystallization of negatively charged exciton in a disconnected one-dimensional structure [PDF]

open access: yes, 2007
Se analiza una transición desde un estado gaseoso a otro con una correlación fuerte en un sistema de tres partículas, dos electrones separados en anillos unidimensionales, verticalmente apilados y un hueco dentro de un hilo unidimensional.
Marín, J.H., García, L.F., Piña, J.C.
core  

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