scholarly journals Kinetic approach to nuclear-spin polaron formation

2020 ◽  
Vol 102 (16) ◽  
Author(s):  
Andreas Fischer ◽  
Iris Kleinjohann ◽  
Frithjof B. Anders ◽  
Mikhail M. Glazov
Keyword(s):  
Nuclear Spin ◽  
Kinetic Approach ◽  
Spin Polaron ◽  
Polaron Formation

Strong Coupling of Electron and Nuclear Spins: Outlook and Prospects

2018 ◽  
Author(s):  
M. M. Glazov
Keyword(s):  
Energy Spectrum ◽  
Charge Carrier ◽  
Strong Coupling ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Spin Polaron ◽  
Nuclear Spins ◽  
Deep Impurity ◽  
Impurity Centers ◽  
Ordered State

In this chapter, some prospects in the field of electron and nuclear spin dynamics are outlined. Particular emphasis is put ona situation where the hyperfine interaction is so strong that it leads to a qualitative rearrangement of the energy spectrum resulting in the coherent excitation transfer between the electron and nucleus. The strong coupling between the spin of the charge carrier and of the nucleus is realized, for example in the case of deep impurity centers in semiconductors or in isotopically purified systems. We also discuss the effect of the nuclear spin polaron, that is ordered state, formation at low enough temperatures of nuclear spins, where the orientation of the carrier spin results in alignment of the spins of nucleus interacting with the electron or hole.

scholarly journals Spin-polaron formation and magnetic state diagram in La-doped CaMnO3

2017 ◽  
Vol 95 (22) ◽  
Author(s):  
N. Bondarenko ◽  
Y. Kvashnin ◽  
J. Chico ◽  
A. Bergman ◽  
O. Eriksson ◽  
...  
Keyword(s):  
Magnetic State ◽  
State Diagram ◽  
Spin Polaron ◽  
Polaron Formation ◽  
La Doped

Spin-polaron formation and phase separation

1996 ◽  
Vol 9 (4) ◽  
pp. 407-412 ◽  
Author(s):  
G. Seibold ◽  
E. Sigmund ◽  
V. Hizhnyakov
Keyword(s):  
Phase Separation ◽  
Spin Polaron ◽  
Polaron Formation

POLARON AND SPIN-POLARON EFFECTS IN THE COLOSSAL MAGNETORESISTANCE

1999 ◽  
Vol 13 (29n31) ◽  
pp. 3808-3814 ◽  
Author(s):  
Y. M. MALOZOVSKY ◽  
J. D. FAN
Keyword(s):  
Phase Transition ◽  
Colossal Magnetoresistance ◽  
Manganese Oxides ◽  
Spin Diffusion ◽  
Magnetic Moments ◽  
Spin Fluctuations ◽  
Ferromagnetic Phase ◽  
Spin Polaron ◽  
Ferromagnetic Phase Transition ◽  
Polaron Formation

The polaron formation due to the strong interaction of electrons with the optical phonons in a layered manganese oxides is considered. The diffusion of nearly localized polarons in the presence of the spin-dependent and multiple scattering on the randomly oriented and/or distributed magnetic moments of atoms is considered. The spin diffusion coefficient in the case of the exchange interaction between the diffusive but nearly localized polarons is evaluated. It is shown that the polaron localization leads to the vanishing of the spin diffusion and hence the ferromagnetic phase transition. The spin-polaron effect caused by the interaction of polarons with the spin fluctuations further significantly reduces conductivity near the temperature of the ferromagnetic phase transition as shown.

Analysis of spin-polaron formation in hund lattices

2013 ◽  
Vol 62 (10) ◽  
pp. 1504-1507
Author(s):  
Yesenia Arredondo ◽  
Oracio Navarro ◽  
Emmanuel Vallejo ◽  
Michel Avignon
Keyword(s):  
Spin Polaron ◽  
Polaron Formation

Nonvolatile Memory via Spin Polaron Formation

2008 ◽  
Vol 7 (4) ◽  
pp. 480-483 ◽  
Author(s):  
H. Enaya ◽  
Y.G. Semenov ◽  
K.W. Kim ◽  
J.M. Zavada
Keyword(s):  
Nonvolatile Memory ◽  
Spin Polaron ◽  
Polaron Formation

Electron Spin Relaxation Beyond the Hyperfine Interaction

2018 ◽  
Author(s):  
M. M. Glazov
Keyword(s):  
Hyperfine Interaction ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Electron Interaction ◽  
Spin Polaron ◽  
Spin Orientation ◽  
Deep Impurity ◽  
Electron Spin Relaxation ◽  
Future Studies ◽  
Ordered State

Here, some prospects for future studies in the field of electron and nuclear spin dynamics are outlined. In contrast to previous chapters where the electron interaction with multitude of nuclei was discussed, in Chapter 8 particular emphasis is put on a situation where hyperfine interaction is so strong that it leads to a qualitative rear rangement of the energy spectrum resulting in coherent excitation transfer between electron and nucleus. The strong coupling between the spin of the charge carrier and of the nucleus is realized; e.g., in the case of deep impurity centers in semiconductors or in isotopically purified systems. We also discuss the effect of the nuclear spin polaron; that is, the ordered state, where the carrier spin orientation results in alignment of spins of the nucleus interacting with the electron or hole. Such problems have been briefly discussed in the literature but, in our opinion, call for in-depth investigation.

Study of spin-polaron formation in 1D systems

2014 ◽  
Author(s):  
Y. Arredondo ◽  
E. Vallejo ◽  
O. Navarro
Keyword(s):  
Spin Polaron ◽  
Polaron Formation
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