Results 61 to 70 of about 568,421 (287)

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Perturbative 2-body parent Hamiltonians for projected entangled pair states

open access: yesNew Journal of Physics, 2014
We construct parent Hamiltonians involving only local 2-body interactions for a broad class of projected entangled pair states (PEPS). Making use of perturbation gadget techniques, we define a perturbative Hamiltonian acting on the virtual PEPS space ...
Courtney G Brell   +2 more
doaj   +1 more source

Fracton topological order at finite temperature

open access: yesPhysical Review Research, 2022
As new kinds of stabilizer code models, fracton models have been promising in realizing quantum memory or quantum hard drives. However, it has been shown that the fracton topological order of 3D fracton models occurs only at zero temperature.
Xiaoyang Shen   +4 more
doaj   +1 more source

Detecting Topological Order with Ribbon Operators

open access: yes, 2016
We introduce a numerical method for identifying topological order in two-dimensional models based on one-dimensional bulk operators. The idea is to identify approximate symmetries supported on thin strips through the bulk that behave as string operators ...
Bridgeman, Jacob C.   +2 more
core   +1 more source

Identifying topological order through unsupervised machine learning

open access: yes, 2020
The Landau description of phase transitions relies on the identification of a local order parameter that indicates the onset of a symmetry-breaking phase.
Rodriguez-Nieva, Joaquin F.   +1 more
core   +1 more source

Topological Order at Nonzero Temperature [PDF]

open access: yesPhysical Review Letters, 2011
We propose a definition for topological order at nonzero temperature in analogy to the usual zero temperature definition that a state is topologically ordered, or "nontrivial", if it cannot be transformed into a product state (or a state close to a product state) using a local (or approximately local) quantum circuit.
openaire   +3 more sources

Magnetic Control of Chiral Hybridized Phonon Magnetic Moments in Ferrimagnets Fe2‐xZnxMo3O8

open access: yesAdvanced Functional Materials, EarlyView.
Helicity‐resolved magneto‐Raman spectroscopy reveals magnetic control of chiral phonon magnetic moments in polar ferrimagnet (ZnxFe2−xMo3O₈). Large spontaneous zero‐field phonon splittings, selective phonon–magnon coupling, and asymmetric Zeeman responses demonstrate that phonon chirality is governed by magnon‐phonon coupling and magnetization.
Youngsu Choi   +8 more
wiley   +1 more source

Topological phase transition in the quench dynamics of a one-dimensional Fermi gas with spin–orbit coupling

open access: yesNew Journal of Physics, 2015
We study the quench dynamics of a one-dimensional ultracold Fermi gas with synthetic spin-orbit coupling. At equilibrium, the ground state of the system can undergo a topological phase transition and become a topological superfluid with Majorana edge ...
Pei Wang, Wei Yi, Gao Xianlong
doaj   +1 more source

Characterizing Topological Order in Superconducting Systems

open access: yes, 2010
Two established frameworks account for the onset of a gap in a superconducting system: one is based on spontaneous symmetry breaking via the Anderson-Higgs-Kibble mechanism, and the other is based on the recently developed paradigm of topological order ...
Diamantini, M. Cristina   +1 more
core   +1 more source

Emergent Spin‐Glass Behavior in an Iron(II)‐Based Metal–Organic Framework Glass

open access: yesAdvanced Functional Materials, EarlyView.
A one‐pot, solvent‐free synthesis yields an Fe2+‐based metal‐organic framework (MOF) glass featuring a continuous random network structure. The material exhibits spin‐glass freezing at 14 K, driven by topological‐disorder and short‐range magnetic frustration, showcasing the potential of MOF glasses as a plattform for cooperative magnetic phenomena in ...
Chinmoy Das   +8 more
wiley   +1 more source

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