Results 111 to 120 of about 7,794,127 (372)

ARPES study of Pb doped Bi_2Sr_2CaCu_2O_8 - a new Fermi surface picture

, 2001
High resolution angle resolved photoemission data from Pb doped Bi_2Sr_2CaCu_2O_8 (Bi2212) with suppressed superstructure is presented. Improved resolution and very high momentum space sampling at various photon energies reveal the presence of two Fermi ...
A. Bansil, A. G. Loeser, A. Lanzara, C.G. Olson, D. L. Feng, D. L. Feng, D. S. Dessau, E. D. Lu, H. Ding, H. Eisaki, H. M. Fretwell, J. Mesot, J.-I. Shimoyama, Jian Ma, K. Kishio, M. R. Norman, M. R. Norman, N. L. Saini, P. Aebi, P. J. White, P. Schwaller, P. V. Bogdanov, S. A. Kellar, S. Hufner, S. Legner, S. V. Borisenko, X. J. Zhou, Y.-D. Chuang, Y.-D. Chuang, Z. Hussain, Z. X. Shen   +30 more
core   +1 more source

Multicritical Fermi Surface Topological Transitions [PDF]

Physical Review Letters, 2019
A wide variety of complex phases in quantum materials are driven by electron-electron interactions, which are enhanced through density of states peaks. A well known example occurs at van Hove singularities where the Fermi surface undergoes a topological transition.
Alex Shtyk, Joseph J. Betouras, Claudio Chamon, Dmitry V. Efremov, Andrew P. Mackenzie, Andrew P. Mackenzie, Andreas W. Rost, Andreas W. Rost   +7 more
openaire   +6 more sources

Topology‐Aware Surface Reconstruction for Point Clouds [PDF]

Computer graphics forum (Print), 2018
We present an approach to incorporate topological priors in the reconstruction of a surface from a point scan. We base the reconstruction on basis functions which are optimized to provide a good fit to the point scan while satisfying predefined ...
Rickard Brüel Gabrielsson, Vignesh Ganapathi-Subramanian, P. Skraba, L. Guibas   +3 more
semanticscholar   +1 more source

A Case‐Based Reasoning Approach to Model Manufacturing Constraints for Impact Extrusion

Advanced Engineering Materials, EarlyView.
A hybrid modeling approach is presented that combines constraint‐based process modeling and case‐based reasoning. The model formalizes manufacturing constraints and integrates simulation data to model complex manufacturing processes. The approach supports manufacturability analysis during product design through an adaptive modeling environment.
Kevin Herrmann, Eduard Ortlieb, Hendrik Wester, Paul Christoph Gembarski, Bernd‐Arno Behrens, Roland Lachmayer   +5 more
wiley   +1 more source

Barriers to Topologically Minimal Surfaces [PDF]

arXiv, 2009
In earlier work we introduced topologically minimal surfaces as the analogue of geometrically minimal surfaces. Here we strengthen the analogy by showing that complicated amalgamations act as barriers to low genus, topologically minimal surfaces.
arxiv  

Topology of leaves for minimal laminations by non-simply connected hyperbolic surfaces [PDF]

arXiv, 2020
We give the topological obstructions to be a leaf in a minimal lamination by hyperbolic surfaces whose generic leaf is homeomorphic to a Cantor tree. Then, we show that all allowed topological types can be simultaneously embedded in the same lamination.
arxiv  

Topological surfaces of domain wall-decorated antiferromagnetic topological insulator MnBi$_{2n}$Te$_{3n+1}$ [PDF]

arXiv, 2022
Antiferromagnetic topological insulators harbor topological in-gap surface states protected by an anti-unitary $S$ symmetry, which is broken by the inevitable presence of domain walls. Whether an antiferromagnetic topological insulator with domain walls is gapless and metallic on its topological surfaces remains to be elucidated.
arxiv  

Lifshitz transition from valence fluctuations in YbAl3

, 2017
In Kondo lattice systems with mixed valence, such as YbAl3, interactions between localized electrons in a partially filled f shell and delocalized conduction electrons can lead to fluctuations between two different valence configurations with changing ...
Chatterjee, Shouvik, Finkelstein, Kenneth D., Ruf, Jacob. P., Schlom, Darrell G., Shen, Kyle M., Wei, Haofei. I.   +5 more
core   +2 more sources

Fermi surface topology of LaFePO and LiFeP. [PDF]

Physical Review Letters, 2012
We perform charge self-consistent density functional theory combined with dynamical mean field theory calculations to study correlation effects on the Fermi surfaces of the iron pnictide superconductors LaFePO and LiFeP.
J. Ferber, H. Jeschke, R. Valentí
semanticscholar   +1 more source

Bioinspired Design of Isotropic Lattices with Tunable and Controllable Anisotropy

Advanced Engineering Materials, EarlyView.
This study introduces nested isotropic lattices, integrating architectural elements like nesting orders and orientations inspired by bioarchitectures. The design enables tunable anisotropy across nine mono‐nest and twenty multi‐nest lattices with 252 parametric variations, demonstrating transitions from shear‐ to tensile‐compression‐dominant behaviors ...
Ramalingaiah Boda, Biranchi Panda, Shanmugam Kumar   +2 more
wiley   +1 more source