Coexistence of spin glass type freezing and cooperative paramagnetic state inSr3MnTiO7

2015 ◽  
Vol 92 (21) ◽  
Author(s):  
S. Chowki ◽  
S. Rayaprol ◽  
A. Mukhopadhyay ◽  
N. Mohapatra
Keyword(s):  
Spin Glass ◽  
Paramagnetic State ◽  
Glass Type

ChemInform Abstract: Spin-Glass-Type State in Complex Nonmagnetic Systems

ChemInform ◽  
2010 ◽  
Vol 41 (36) ◽  
pp. no-no
Author(s):  
E. E. Tareyeva ◽  
T. I. Schelkacheva ◽  
N. M. Chtchelkatchev
Keyword(s):  
Spin Glass ◽  
Glass Type

Anomalous paramagnetic‐state μSR in spin‐glass AgMn

1981 ◽  
Vol 52 (3) ◽  
pp. 1766-1768 ◽  
Author(s):  
J. A. Brown ◽  
R. H. Heffner ◽  
T. A. Kitchens ◽  
M. Leon ◽  
C. E. Olsen ◽  
...  
Keyword(s):  
Spin Glass ◽  
Paramagnetic State

Anomalous Paramagnetic State in AgMn Spin Glass and the Kondo Effect

1985 ◽  
Vol 131 (1) ◽  
pp. K87-K90 ◽  
Author(s):  
D. S. Haroutunian ◽  
A. G. Karagyozyan ◽  
G. N. Karajian
Keyword(s):  
Spin Glass ◽  
Kondo Effect ◽  
Paramagnetic State

Spin glass-type behavior in iron antimonate: The identification of unusual phenomena at low temperatures in low magnetic fields

1990 ◽  
Vol 87 (1) ◽  
pp. 237-240 ◽  
Author(s):  
Frank J. Berry ◽  
Megan I. Sarson ◽  
Javier Tejada ◽  
Amilcar Labarta ◽  
Raul Rodriguez ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Spin Glass ◽  
Low Temperatures ◽  
Glass Type ◽  
Iron Antimonate

scholarly journals Stochastic tunneling across fitness valleys can give rise to a logarithmic long-term fitness trajectory

2019 ◽  
Vol 5 (7) ◽  
pp. eaav3842 ◽  
Author(s):  
Yipei Guo ◽  
Marija Vucelja ◽  
Ariel Amir
Keyword(s):  
Spin Glass ◽  
Fitness Landscape ◽  
Fitness Function ◽  
Metastable States ◽  
Hill Climbing ◽  
Type Model ◽  
Logarithmic Average ◽  
Glass Type ◽  
Average Fitness

Adaptation, where a population evolves increasing fitness in a fixed environment, is typically thought of as a hill-climbing process on a fitness landscape. With a finite genome, such a process eventually leads the population to a fitness peak, at which point fitness can no longer increase through individual beneficial mutations. Instead, the ruggedness of typical landscapes due to epistasis between genes or DNA sites suggests that the accumulation of multiple mutations (via a process known as stochastic tunneling) can allow a population to continue increasing in fitness. However, it is not clear how such a phenomenon would affect long-term fitness evolution. By using a spin-glass type model for the fitness function that takes into account microscopic epistasis, we find that hopping between metastable states can mechanistically and robustly give rise to a slow, logarithmic average fitness trajectory.

Enhanced Magnetic Properties and Spin-Phonon Coupling of Single-Crystalline BiFeO3 Nanorods Prepared by Hydrothermal Technique

2012 ◽  
Vol 560-561 ◽  
pp. 766-770 ◽  
Author(s):  
Yu Deng ◽  
Di Wu ◽  
You Wei Du
Keyword(s):  
Spin Glass ◽  
Room Temperature ◽  
Weak Ferromagnetism ◽  
Phonon Coupling ◽  
Hydrothermal Technique ◽  
Single Crystalline ◽  
Glass Type ◽  
Size And Morphology ◽  
Hydrothermal Methods ◽  
Strong Spin

By hydrothermal methods single-crystalline BiFeO3 (BFO) nanorods with diameters of 15-40nm and lengths of 100-400nm were synthesized. The rhombohedra phased nanorods grow along the [110] direction. The nanorods show weak ferromagnetism at room temperature and enhanced spin-glass type magnetism at low temperature. Around 100K, a strong spin-two-phonon coupling has been detected, confirming the spin-glass freezing behaviors. With emphasis on the size and morphology, the enhanced magnetism and the spin-glass freezing of the BFO nanorods have been discussed.

Spin-glass-type state in complex nonmagnetic systems

2009 ◽  
Vol 160 (2) ◽  
pp. 1190-1202 ◽  
Author(s):  
E. E. Tareyeva ◽  
T. I. Schelkacheva ◽  
N. M. Chtchelkatchev
Keyword(s):  
Spin Glass ◽  
Glass Type
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