Results 61 to 70 of about 27,190 (260)

Magneto‐Ionic Devices With Polymer‐Based Electrolytes

Advanced Functional Materials, EarlyView.
Polymer electrolytes are introduced for magneto‐ionic devices based on hydroxide and hydrogen ions. The magneto‐ionic effect results in a pronounced voltage‐controlled variation of coercivity in both devices. The switching speed is in the range of 100 ms.
Markus Gößler, Richard Weber, Michael Sommer, Karin Leistner   +3 more
wiley   +1 more source

Tsallis Relative Entropy and Anomalous Diffusion

Entropy, 2012
In this paper we utilize the Tsallis relative entropy, a generalization of the Kullback–Leibler entropy in the frame work of non-extensive thermodynamics to analyze the properties of anomalous diffusion processes.
Karl Heinz Hoffmann, Janett Prehl, Christopher Essex   +2 more
doaj   +1 more source

Unravelling the origins of anomalous diffusion: From molecules to migrating storks

Physical Review Research, 2022
Anomalous diffusion or, more generally, anomalous transport, with nonlinear dependence of the mean-squared displacement on the measurement time, is ubiquitous in nature.
Ohad Vilk, Erez Aghion, Tal Avgar, Carsten Beta, Oliver Nagel, Adal Sabri, Raphael Sarfati, Daniel K. Schwartz, Matthias Weiss, Diego Krapf, Ran Nathan, Ralf Metzler, Michael Assaf   +12 more
doaj   +1 more source

Davies’ method for anomalous diffusions

Proceedings of the American Mathematical Society, 2016
Davies’ method of perturbed semigroups is a classical technique to obtain off-diagonal upper bounds on the heat kernel. However Davies’ method does not apply to anomalous diffusions due to the singularity of energy measures. In this note, we overcome the difficulty by modifying the Davies’ perturbation method to obtain sub-Gaussian upper bounds on the ...
Murugan, Mathav, Saloff-Coste, Laurent
openaire   +3 more sources

Unexpected Asymmetric Mn‐Sb Site Mixing and Reentrant Spin‐Glass State of MnSb2Te4

Advanced Functional Materials, EarlyView.
MnSb2Te4 is an intrinsic magnetic topological insulator. Its properties are extraordinarily sensitive to tiny defects, making structural studies essential for understanding how magnetism and topology work together. This work shows that Mn can be unevenly distributed within the crystal and how that disorder is linked to a newly reported spin‐glass state
Gustavo Chavez Ponce de Leon, Ahmad Dibajeh, Gert ten Brink, Majid Ahmadi, Suyang Sun, Wei Zhang, Bart Jan Kooi, George Palasantzas   +7 more
wiley   +1 more source

Anomalous diffusion and ergodicity breaking in heterogeneous diffusion processes

New Journal of Physics, 2013
We demonstrate the non-ergodicity of a simple Markovian stochastic process with space-dependent diffusion coefficient D ( x ). For power-law forms D ( x ) ≃ | x | ^α , this process yields anomalous diffusion of the form 〈 x ^2 ( t )〉 ≃  t ^2/(2− ^α ...
Andrey G Cherstvy, Aleksei V Chechkin, Ralf Metzler   +2 more
doaj   +1 more source

Emergence of a Hexagonal Fe2S2 Single Layer Without a Bulk Counterpart via Phase Transformation

Advanced Functional Materials, EarlyView.
Upon annealing, single‐layer Mackinawite iron sulfide transforms into a previously unknown hexagonal Fe2S2${\rm Fe}_2{\rm S}_2$ phase with β$\beta$‐CuI structure. STM, LEED, and first‐principles calculations identify the structure and show that electronic correlations and magnetic order are important for its stability.
Affan Safeer, Wejdan Beida, Felix Oberbauer, Nicolae Atodiresei, Gustav Bihlmayer, Max Wolfertz, Chiara Schlichte, Wouter Jolie, Stefan Blügel, Jeison Fischer, Thomas Michely   +10 more
wiley   +1 more source

Semantic segmentation of anomalous diffusion using deep convolutional networks

Physical Review Research
Heterogeneous dynamics commonly emerges in anomalous diffusion with intermittent transitions of diffusion states but proves challenging to identify using conventional statistical methods. To effectively capture these transient changes of diffusion states,
Xiang Qu, Yi Hu, Wenjie Cai, Yang Xu, Hu Ke, Guolong Zhu, Zihan Huang   +6 more
doaj   +1 more source

A new coarse-grained model for E. coli cytoplasm: accurate calculation of the diffusion coefficient of proteins and observation of anomalous diffusion. [PDF]

PLoS ONE, 2014
A new coarse-grained model of the E. coli cytoplasm is developed by describing the proteins of the cytoplasm as flexible units consisting of one or more spheres that follow Brownian dynamics (BD), with hydrodynamic interactions (HI) accounted for by a ...
Sabeeha Hasnain, Christopher L McClendon, Monica T Hsu, Matthew P Jacobson, Pradipta Bandyopadhyay   +4 more
doaj   +1 more source

Efficient Magnetization Switching Driven by Orbital Torque in Light 3d Transition‐Metal Nitrides

Advanced Functional Materials, EarlyView.
Efficient magnetization switching is demonstrated through orbital torque generated from light 3d transition‐metal nitride. Transition‐metal nitrides are established as effective sources of orbital angular momentum for current‐induced switching, highlighting their potential for low‐power next‐generation orbitronic devices beyond conventional heavy‐metal‐
Gaurav K. Shukla, Yoshio Miura, Mayank K. Singh, Shinji Isogami   +3 more
wiley   +1 more source