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

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

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

Study of spin-polaron formation in 1D systems

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

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

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

Sign in / Sign up

Export Citation Format

Share Document