Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Xiangjun Xing"'
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-9 (2022)
Spin torque nano-oscillators facilitate the control of magnetization dynamics without the need for an external magnetic field and are compatible with CMOS technologies. Here, the authors propose, using micromagnetic simulations, a device comprising o
Externí odkaz:
https://doaj.org/article/bd629c0c80234f5198ac12bf0534bee2
Autor:
Xiangjun Xing, Yan Zhou
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-11 (2022)
Skyrmions are swirling magnetic textures useful for low power-consumption computer memories, but better means, preferably magnetic, are required to control their motion. Here, the authors use micromagnetic simulations to show that moving the walls be
Externí odkaz:
https://doaj.org/article/fc43e0bdbe1f4d2a882c57c566f65564
Autor:
Mingnan Ding, Xiangjun Xing
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p 013193 (2023)
A multi-scale projection operator method is developed and applied to study coarse-graining of covariant Fokker-Planck theory and the associated Ito-Langevin dynamics. Explicit expressions for the renormalized kinetic coefficients are obtained. It is
Externí odkaz:
https://doaj.org/article/679ea6e850c64124b430e20bcf1bf646
Publikováno v:
AIP Advances, Vol 12, Iss 5, Pp 055210-055210-6 (2022)
Magnetic skyrmions are appealing for applications in emerging topological spintronic devices. However, when magnetic skyrmions in a nanowire are driven by an in-plane current, a transverse Magnus force deflects their trajectories from the current dir
Externí odkaz:
https://doaj.org/article/dbafad30fed242e8aa28763e9b835eb9
Publikováno v:
Results in Physics, Vol 28, Iss , Pp 104702- (2021)
In this paper, we proposed polarization-dependent terahertz reflective beam splitters under normal incidence, in which resonance-domain diffraction gratings with period comparable to incident wavelength are adopted to achieve multi-channel beam separ
Externí odkaz:
https://doaj.org/article/c442e50b518945e1b83020fd1809c079
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p 043125 (2022)
We construct a unified theory of thermodynamics and stochastic thermodynamics for classical nonequilibrium systems driven by non-conservative forces, using the recently developed covariant Ito-Langevin theory. The thermodynamic forces are split into
Externí odkaz:
https://doaj.org/article/74cee7470faa487fb8bdc1ef503a84b4
Autor:
Mingnan Ding, Xiangjun Xing
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033247 (2022)
Using the recently developed covariant Ito-Langevin dynamics, we develop a nonequilibrium thermodynamic theory for small systems coupled to multiplicative noises. The theory is based on Ito calculus, and is fully covariant under time-independent nonl
Externí odkaz:
https://doaj.org/article/f0600a16edba46e6a42513808716207e
Autor:
Mingnan Ding, Xiangjun Xing
Publikováno v:
Quantum, Vol 6, p 694 (2022)
Path integrals constitute powerful representations for both quantum and stochastic dynamics. Yet despite many decades of intensive studies, there is no consensus on how to formulate them for dynamics in curved space, or how to make them covariant wit
Externí odkaz:
https://doaj.org/article/9fc3e4ebcf7d4e148c557a04fed63922
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013015 (2022)
Assuming time-scale separation, a simple and unified theory of thermodynamics and stochastic thermodynamics is constructed for small classical systems strongly interacting with their environments in a controllable fashion. The total Hamiltonian is de
Externí odkaz:
https://doaj.org/article/ece17eb42c3243d3a385abce55e40202
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043222 (2020)
We study an information-based mechanism of self-propulsion in noisy environment. An information swimmer maintains directional motion by periodically measuring its velocity and accordingly adjusting its friction coefficient. Assuming that the measurem
Externí odkaz:
https://doaj.org/article/0e3131b4d703404dbd0f18959eeb506c