Analysis of Primary/Containment Coupling Phenomena Characterizing the MASLWR Design During a SBLOCA Scenario

The complex coupling between charge carriers and phonons is responsible for diverse phenomena in condensed matter. We apply ultrafast electron diffuse scattering to unravel electron-phonon coupling phenomena in 1T-TiSe2 in both momentum and time. We are able to distinguish effects due to the real part of the many-body bare electronic susceptibility, R[χ0(q)], from those due to the electron-phonon coupling vertex, gq, by following the response of semimetallic (normal-phase) 1T-TiSe2 to the selective photo-doping of carriers into the electron pocket at the Fermi level. Quasi-impulsive and wave vector–specific renormalization of soft zone-boundary phonon frequencies (stiffening) is observed, followed by wave vector–independent electron-phonon equilibration. These results unravel the underlying mechanisms driving the phonon softening that is associated with the charge density wave transition at lower temperatures.

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Ruderman–Kittel–Kasuya–Yosida-type interfacial Dzyaloshinskii–Moriya interaction in heavy metal/ferromagnet heterostructures

Nature Communications ◽

10.1038/s41467-021-23586-y ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Taehyun Kim ◽

In Ho Cha ◽

Yong Jin Kim ◽

Gyu Won Kim ◽

Andrey Stashkevich ◽

...

Keyword(s):

Heavy Metal ◽

Exchange Coupling ◽

Spin Orbit Coupling ◽

Conduction Electrons ◽

Indirect Exchange ◽

Metal Atoms ◽

Technological Potential ◽

Interfacial Modification ◽

Coupling Phenomena ◽

Moriya Interaction

AbstractThe manipulation of magnetization with interfacial modification using various spin-orbit coupling phenomena has been recently revisited due to its scientific and technological potential for next-generation memory devices. Herein, we experimentally and theoretically demonstrate the interfacial Dzyaloshinskii–Moriya interaction characteristics penetrating through a MgO dielectric layer inserted between the Pt and CoFeSiB. The inserted MgO layer seems to function as a chiral exchange interaction mediator of the interfacial Dzyaloshinskii–Moriya interaction from the heavy metal atoms to ferromagnet ones. The potential physical mechanism of the anti-symmetric exchange is based on the tunneling-like behavior of conduction electrons through the semi-conductor-like ultrathin MgO. Such behavior can be correlated with the oscillations of the indirect exchange coupling of the Ruderman–Kittel–Kasuya–Yosida type. From the theoretical demonstration, we could provide approximate estimation and show qualitative trends peculiar to the system under investigation.

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Coupling Phenomena in Magnetocaloric Materials

Energy Technology ◽

10.1002/ente.201800163 ◽

2018 ◽

Vol 6 (8) ◽

pp. 1429-1447 ◽

Cited By ~ 4

Author(s):

Anja Waske ◽

Biswanath Dutta ◽

Niclas Teichert ◽

Bruno Weise ◽

Navid Shayanfar ◽

...

Keyword(s):

Magnetocaloric Materials ◽

Coupling Phenomena

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Stiffness Constants for Composite Beams Including Large Initial Twist and Curvature Effects

Applied Mechanics Reviews ◽

10.1115/1.3005084 ◽

1995 ◽

Vol 48 (11S) ◽

pp. S61-S67 ◽

Cited By ~ 29

Author(s):

Carlos E. S. Cesnik ◽

Dewey H. Hodges

Keyword(s):

Wave Length ◽

Three Dimensional ◽

Radius Of Curvature ◽

Cross Sectional ◽

Curvature Effects ◽

Three Dimensional Representation ◽

Stiffness Model ◽

Sectional Analysis ◽

Three Dimensional Elasticity ◽

Coupling Phenomena

An asymptotically exact methodology, based on geometrically nonlinear, three-dimensional elasticity, is presented for cross-sectional analysis of initially curved and twisted, nonhomogeneous, anisotropic beams. Through accounting for all possible deformation in the three-dimensional representation, the analysis correctly accounts for the complex elastic coupling phenomena in anisotropic beams associated with shear deformation. The analysis is subject only to the restrictions that the strain is small relative to unity and that the maximum dimension of the cross section is small relative to the wave length of the deformation and to the minimum radius of curvature and/or twist. The resulting cross-sectional elastic constants exhibit second-order dependence on the initial curvature and twist. As is well known, the associated geometrically-exact, one-dimensional equilibrium and kinematical equations also depend on initial twist and curvature. The corrections to the stiffness model derived herein are also necessary in general for proper representation of initially curved and twisted beams.

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