Results 111 to 120 of about 637,276 (316)

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Learning Feynman Diagrams with Tensor Trains

Physical Review X, 2022
We use tensor network techniques to obtain high-order perturbative diagrammatic expansions for the quantum many-body problem at very high precision. The approach is based on a tensor train parsimonious representation of the sum of all Feynman diagrams ...
Yuriel Núñez Fernández, Matthieu Jeannin, Philipp T. Dumitrescu, Thomas Kloss, Jason Kaye, Olivier Parcollet, Xavier Waintal   +6 more
doaj   +1 more source

Off-diagonal Wave Function Monte Carlo Studies of Hubbard Model I

, 2002
We propose a Monte Carlo method, which is a hybrid method of the quantum Monte Carlo method and variational Monte Carlo theory, to study the Hubbard model.
Anderson P. W., Blankenbecler R., Ceperley D., Furukawa N., Giamarchi T., Gros C., Hirsch J. E., Hirsch J. E., Imada M., Kobayashi K., Kuroki K., Kuroki K., Mott N. F., Nakanishi T., Ohtsuka H., Parola A., Umrigar C. J., White S. R., Yamaji K., Yanagisawa T., Yanagisawa T., Yanagisawa T., Yokoyama H., Yokoyama H., Zhang S.   +24 more
core   +1 more source

Electric Field‐Dependent Conductivity as Probe for Charge Carrier Delocalization and Morphology in Organic Semiconductors

Advanced Functional Materials, EarlyView.
Applying a high electric field to a doped organic semiconductor heats up the charge carrier distribution beyond the lattice temperature, enhancing conductivity. It is shown that the associated effective temperature can be used to extract the effective localization length, which is a characteristic length scale of charge transport and provides ...
Morteza Shokrani, Felix Maximilian Graf, Anton Kompatscher, Dennis Derewjanko, Martijn Kemerink   +4 more
wiley   +1 more source

Monte Carlo Based Techniques for Quantum Magnets with Long-Range Interactions

Entropy
Long-range interactions are relevant for a large variety of quantum systems in quantum optics and condensed matter physics. In particular, the control of quantum–optical platforms promises to gain deep insights into quantum-critical properties induced by
Patrick Adelhardt, Jan A. Koziol, Anja Langheld, Kai P. Schmidt   +3 more
doaj   +1 more source

Quantum-enhanced analysis of discrete stochastic processes

npj Quantum Information, 2021
Discrete stochastic processes (DSP) are instrumental for modeling the dynamics of probabilistic systems and have a wide spectrum of applications in science and engineering.
Carsten Blank, Daniel K. Park, Francesco Petruccione   +2 more
doaj   +1 more source

Comparison of Calculations for the Hubbard model obtained with Quantum-Monte-Carlo, exact and stochastic Diagonalization

, 1997
In this paper we compare numerical results for the ground state of the Hubbard model obtained by Quantum-Monte-Carlo simulations with results from exact and stochastic diagonalizations.
Fettes, Werner, Husslein, Thomas, Morgenstern, Ingo   +2 more
core   +1 more source

Quantum Monte Carlo calculations of light nuclei with local chiral two- and three-nucleon interactions [PDF]

, 2017
Local chiral effective field theory interactions have recently been developed and used in the context of quantum Monte Carlo few- and many-body methods for nuclear physics.
J. E. Lynn, J. E. Lynn, I. Tews, J. Carlson, S. Gandolfi, A. Gezerlis, Kevin Schmidt, A. Schwenk   +7 more
semanticscholar   +1 more source

Electron Channeling Contrast Imaging of Ferroelastic Domains

Advanced Materials, EarlyView.
A simple scanning electron microscopy technique, electron channeling contrast imaging, unveils nanoscale ferroelastic domains and their coupling to functional properties in oxide heterostructures. The work demonstrates high‐resolution mapping of both surface and buried domains, broadening the experimental toolbox for ferroic and quantum oxide systems ...
Wei Peng, Aditya Singh, M. Haroon Qaiser, Philipp Fahler‐Muenzer, Freya Watson, Liang Si, Yining Xie, Katarzyna E. Sopińska, Daniel A. Chaney, Ana M. Sanchez, T. Ben Britton, Richard Beanland, Marios Hadjimichael, Marin Alexe   +13 more
wiley   +1 more source

Quantum criticality at cryogenic melting of polar bubble lattices

Nature Communications, 2023
Quantum fluctuations (QFs) caused by zero-point phonon vibrations (ZPPVs) are known to prevent the occurrence of polar phases in bulk incipient ferroelectrics down to 0 K.
Wei Luo, Alireza Akbarzadeh, Yousra Nahas, Sergei Prokhorenko, Laurent Bellaiche   +4 more
doaj   +1 more source