scholarly journals Control of spin dynamics with laser pulses: Generation of entangled states of donor-bound electrons in aCd1−xMnxTe quantum well

2005 ◽  
Vol 71 (4) ◽  
Author(s):  
J. M. Bao ◽  
A. V. Bragas ◽  
J. K. Furdyna ◽  
R. Merlin
Keyword(s):  
Quantum Well ◽  
Spin Dynamics ◽  
Laser Pulses ◽  
Entangled States ◽  
Bound Electrons

scholarly journals Signature of the Overhauser field on the coherent spin dynamics of donor-bound electrons in a single CdTe quantum well

2008 ◽  
Vol 77 (23) ◽  
Author(s):  
C. Testelin ◽  
B. Eble ◽  
F. Bernardot ◽  
G. Karczewski ◽  
M. Chamarro
Keyword(s):  
Quantum Well ◽  
Spin Dynamics ◽  
Bound Electrons ◽  
Coherent Spin

scholarly journals Entangled states and the gravitational quantum well

2018 ◽  
Vol 124 (1) ◽  
pp. 10001 ◽  
Author(s):  
Rui Alves ◽  
Orfeu Bertolami ◽  
Catarina Bastos
Keyword(s):  
Quantum Well ◽  
Entangled States

Spin dynamics excited with mid-infrared femtosecond laser pulses

2010 ◽  
Author(s):  
A. Zagdoud ◽  
M. Vomir ◽  
M. Albrecht ◽  
M. Barthelemy ◽  
J.-Y. Bigot
Keyword(s):  
Femtosecond Laser ◽  
Spin Dynamics ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Mid Infrared

scholarly journals Coherent spin dynamics of donor bound electrons in GaAs

2011 ◽  
Vol 84 (8) ◽  
Author(s):  
Carey Phelps ◽  
Shannon O’Leary ◽  
John Prineas ◽  
Hailin Wang
Keyword(s):  
Spin Dynamics ◽  
Bound Electrons ◽  
Coherent Spin

Electron paramagnetic resonance study of the nuclear spin dynamics in an AlAs quantum well

JETP Letters ◽  
2016 ◽  
Vol 104 (12) ◽  
pp. 838-841 ◽  
Author(s):  
A. V. Shchepetilnikov ◽  
D. D. Frolov ◽  
Yu. A. Nefyodov ◽  
I. V. Kukushkin ◽  
L. Tiemann ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Quantum Well ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Electron Paramagnetic Resonance Study ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

Nonequilibrium phonons in SiGe quantum-well nanostructures upon excitation by picosecond laser pulses

2008 ◽  
Vol 50 (8) ◽  
pp. 1412-1414
Author(s):  
A. I. Sharkov ◽  
A. Yu. Klokov ◽  
T. I. Galkina ◽  
V. A. Tsvetkov
Keyword(s):  
Quantum Well ◽  
Picosecond Laser ◽  
Laser Pulses ◽  
Picosecond Laser Pulses

scholarly journals Temperature dependence of the spin relaxation time of donor-bound electrons immersed in a CdTe quantum well

2019 ◽  
Vol 100 (20) ◽  
Author(s):  
G. Garcia-Arellano ◽  
F. Bernardot ◽  
G. Karczewski ◽  
C. Testelin ◽  
M. Chamarro
Keyword(s):  
Relaxation Time ◽  
Quantum Well ◽  
Temperature Dependence ◽  
Spin Relaxation ◽  
Spin Relaxation Time ◽  
Bound Electrons

scholarly journals Longitudinal Spin Dynamics in the Heisenberg Antiferromagnet: Two-Magnon Excitations

2020 ◽  
Vol 65 (10) ◽  
pp. 865
Author(s):  
O. O. Boliasova ◽  
V. N. Krivoruchko
Keyword(s):  
Wave Vector ◽  
Spin Dynamics ◽  
Laser Pulses ◽  
Magnetization Dynamics ◽  
Longitudinal Magnetization ◽  
Fundamental Limits ◽  
Ultrafast Laser Pulses ◽  
Diagrammatic Technique ◽  
Antiferromagnetic Materials ◽  
Longitudinal Spin

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.

scholarly journals Ultrafast Modulation of Magnetization Dynamics in Ferromagnetic (Ga, Mn)As Thin Films

2018 ◽  
Vol 8 (10) ◽  
pp. 1880 ◽  
Author(s):  
Hang Li ◽  
Xinhui Zhang ◽  
Xinyu Liu ◽  
Margaret Dobrowolska ◽  
Jacek Furdyna
Keyword(s):  
Magnetic Anisotropy ◽  
Spin Dynamics ◽  
Optical Excitation ◽  
Laser Pulses ◽  
Time Resolved ◽  
Ultrafast Optical ◽  
Optical Effects ◽  
Out Of Plane ◽  
Linearly Polarized ◽  
Magnetization Precession

Magnetization precession induced by linearly polarized optical excitation in ferromagnetic (Ga,Mn)As was studied by time-resolved magneto-optical Kerr effect measurements. The superposition of thermal and non-thermal effects arising from the laser pulses complicates the analysis of magnetization precession in terms of magnetic anisotropy fields. To obtain insight into these processes, we investigated compressively-strained thin (Ga,Mn)As films using ultrafast optical excitation above the band gap as a function of pulse intensity. Data analyses with the gyromagnetic calculation based on Landau-Lifshitz-Gilbert equation combined with two different magneto-optical effects shows the non-equivalent effects of in-plane and out-of-plane magnetic anisotropy fields on both the amplitude and the frequency of magnetization precession, thus providing a handle for separating the effects of non-thermal and thermal processes in this context. Our results show that the effect of photo-generated carriers on magnetic anisotropy constitutes a particularly effective mechanism for controlling both the frequency and amplitude of magnetization precession, thus suggesting the possibility of non-thermal manipulation of spin dynamics through pulsed laser excitations.

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