Results 21 to 30 of about 116,736 (210)

A large-N analysis of the local quantum critical point and the spin-liquid phase

, 2003
We study analytically the Kondo lattice model with an additional nearest-neighbor antiferromagnetic interaction in the framework of large-N theory. We find that there is a local quantum critical point between two phases, a normal Fermi-liquid and a spin ...
Burdin, S., Grempel, D. R., Grilli, M.
core   +3 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Superconductivity of bad fermions and the origin of two gaps in cuprates

Communications Physics
The spectral properties of the doped t–t’ Hubbard model, using parameters typical for high-temperature cuprate superconductors, and the mechanism of d-wave pairing remain among the longstanding problems of many-body fermionic materials.
Evgeny A. Stepanov, Sergei Iskakov, Mikhail I. Katsnelson, Alexander I. Lichtenstein   +3 more
doaj   +1 more source

On Ising models [PDF]

, 2006
For various Ising models two approaches are discussed, one is that of simulating lattices, also called gauging on exact equations, the other is that of calculating analytical expressions for the boundary free energy of Ising lattices.
Hoede, C., Zandvliet, H.J.W.
core   +1 more source

Critical Correlations for Short-Range Valence-Bond Wave Functions on the Square Lattice

, 2010
We investigate the arguably simplest $SU(2)$-invariant wave functions capable of accounting for spin-liquid behavior, expressed in terms of nearest-neighbor valence-bond states on the square lattice and characterized by different topological invariants ...
Albuquerque, A. Fabricio, Alet, Fabien
core   +3 more sources

The Effect of Lattice Vibrations on Substitutional Alloy Thermodynamics [PDF]

, 2001
A longstanding limitation of first-principles calculations of substitutional alloy phase diagrams is the difficulty to account for lattice vibrations.
A. van de Walle, Abrikosov, I. A., Ackland, G. J., Althoff, J. D., Althoff, J. D., Anthony, L., Anthony, L., Asta, M., Bakker, H., Bakker, H., Bakker, H., Baroni, S., Becker, J. D., Bogdanoff, P. D., Bogdanoff, P. D., Booth, C., Boyer, L. L., Ceder, G., Ceder, G., Chadi, D. J., Cleri, F., Colinet, C., Craievich, P. J., Craievich, P. J., Daw, M. S., de Fontaine, D., de Gironcoli, S., Dick, B., Dyson, F. J., Fultz, B., Fultz, B., Fultz, B., G. Ceder, Garbulksy, G. D., Garbulsky, G. D., Garbulsky, G. D., Giannozzi, P., Gonze, X., Gonze, X., Gonze, X., Grimvall, G., Grimvall, G., Hass, K. C., Imada, M., Johnson, D. D., Kikuchi, R., Kohan, A. F., LeSar, R., Matthew, J. A. D., McCormack, R., Miller, A., Mohri, T., Mohri, T., Monkhorst, H. J., Moraitis, G., Morgan, D., Morgan, D., Moruzzi, V. L., Mukherjee, G. D., Mukherjee, G. D., Nagel, L. J., Nagel, L. J., Nagel, L. J., Nagel, L. J., Najafabadi, R., Nakamura, K., Oh, C.-S., Ozoliņš, V., Ozoliņš, V., Ozoliņš, V., Ozoliņš, V., Persson, K., Petry, W., Quong, A. A., Quong, A. A., Ravelo, R., Rittner, J. D., Robertson, J. L., Russell, T. P., Sanchez, J. M., Sanchez, J. M., Sanchez, J. M., Shaojun, L., Silverman, A., Sluiter, M. H., Sutton, A. P., Tepesch, P. D., Tseng, W. T., Tuijn, C., van de Walle, A., van de Walle, A., van de Walle, A., van der Ven, A., Waegmaekers, A. A. H. J., Wei, S., Wojtowicz, P. J., Wolverton, C., Wolverton, C., Zhao, L., Zunger, A.   +99 more
core   +2 more sources

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

MIMO Cube Decoder

Journal of Communications Software and Systems, 2011
An insight on the lattice decoder for flat-fading multiple antenna wireless communications systems is presented in this paper. In particular, we show that by formulating the decoding problem as a bounded-error subset selection, theresultant decoder finds
Masoud Alghoniemy, Ahmed H. Tewfik
doaj  

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source