Longitudinal spin diffusion and nonlinear spin dynamics in a dilute−43He solution

1990 ◽  
Vol 65 (17) ◽  
pp. 2149-2152 ◽  
Author(s):  
G. Nunes ◽  
C. Jin ◽  
A. M. Putnam ◽  
D. M. Lee
1992 ◽  
Vol 46 (14) ◽  
pp. 9082-9103 ◽  
Author(s):  
G. Nunes ◽  
C. Jin ◽  
D. L. Hawthorne ◽  
A. M. Putnam ◽  
D. M. Lee

2014 ◽  
Vol 40 (7) ◽  
pp. 635-640 ◽  
Author(s):  
E. G. Galkina ◽  
B. A. Ivanov ◽  
V. I. Butrim

2002 ◽  
Vol 65 (21) ◽  
Author(s):  
Yu. A. Izyumov ◽  
N. I. Chaschin ◽  
V. Yu. Yushankhai

1996 ◽  
Vol 53 (1) ◽  
pp. 350-353 ◽  
Author(s):  
A. Yaouanc ◽  
P. Dalmas de Réotier ◽  
P. C. M. Gubbens ◽  
A. M. Mulders ◽  
F. E. Kayzel ◽  
...  

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3355-3358 ◽  
Author(s):  
J. W. Lynn

A review is given of the neutron scattering measurements of the spin dynamics of the magnetoresistive oxides. A number of anomalous features have been identified in the manganites, including very strong damping of the spin waves in the ground state and as a function of temperature, anomalous spin wave dispersion and the development of a strong spin-diffusion component to the fluctuation spectrum well below T C in the region of optimal doping. For the Tl2Mn2O7 pyrochlore, on the other hand, the behavior of the spin dynamics is conventional, which argues that the mechanism responsible for the magnetoresistive effect has a different origin in these two classes of materials.


2017 ◽  
Vol 53 (32) ◽  
pp. 4477-4480 ◽  
Author(s):  
S. Lenz ◽  
K. Bader ◽  
H. Bamberger ◽  
J. van Slageren

We have investigated the electron spin dynamics in a series of copper(ii) β-diketonate complexes both in frozen solutions and doped solids. We simulate the coherence decay quantitatively without fit parameters.


1996 ◽  
Vol 46 (S4) ◽  
pp. 2253-2254
Author(s):  
I. P. Goudemond ◽  
J. M. Keartland ◽  
M. J. R. Hoch ◽  
G. A. Saunders

2020 ◽  
Vol 65 (10) ◽  
pp. 865
Author(s):  
O. O. Boliasova ◽  
V. N. Krivoruchko

Understanding the ultrafast spin dynamics in magnetically ordered materials is important for the comprehenssion of fundamental limits in spin-based magnetic electronics – magnonics. We have studied a microscopic model of magnetization dynamics in a two-sublattice antiferromagnet with the emphasis on longitudinal spin excitations. The diagrammatic technique for spin operators has been used to overcome limitations typical of phenomenological approaches. The graphical representations of spin wave propagators allow us to summing up the infinite series of distinctive diagrams. Its sum is transformed into an analytic expression for the longitudinal spin susceptibility xzz (q, w) applicable in all regions of the frequency w and wave vector q spaces beyond the hydrodynamical and critical regimes. It is found that the longitudinal magnetization dynamics consists of two types of excitations, which have different dependences on the temperature and wave vector q. The obtained result could be important for understanding the physics of nonequilibrium magnetic dynamics under the effect of ultrafast laser pulses in antiferromagnetic materials.


1987 ◽  
Vol 26 (S3-1) ◽  
pp. 233 ◽  
Author(s):  
N. P. Bigelow ◽  
J. S. Denker ◽  
B. W. Statt ◽  
D. M. Lee ◽  
J. H. Freed

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