Observation of the Griffiths phase in the ternary nitrides Sn1−xNFe3+x

2020 ◽  
Vol 102 (23) ◽  
Author(s):  
Chaocheng Liu ◽  
Xucai Kan ◽  
Bosen Wang ◽  
Xiansong Liu
Keyword(s):  
Griffiths Phase

THE DYNAMICS OF DISORDERED MAGNETS IN THE GRIFFITHS PHASE, INVESTIGATED BY NEUTRON SCATTERING

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1047-C8-1048
Author(s):  
R. G. Lloyd ◽  
P. W. Mitchell ◽  
R. C. C. Ward ◽  
M. Cherrill
Keyword(s):  
Neutron Scattering ◽  
Griffiths Phase ◽  
Disordered Magnets

scholarly journals Epidemic growth and Griffiths effects on an emergent network of excited atoms

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
T. M. Wintermantel ◽  
M. Buchhold ◽  
S. Shevate ◽  
M. Morgado ◽  
Y. Wang ◽  
...  
Keyword(s):  
Complex Systems ◽  
Power Laws ◽  
Excitation Density ◽  
Griffiths Phase ◽  
Many Body ◽  
Excited Atoms ◽  
Equilibrium Dynamics ◽  
Many Body Systems ◽  
Excitation Number ◽  
Non Equilibrium

AbstractWhether it be physical, biological or social processes, complex systems exhibit dynamics that are exceedingly difficult to understand or predict from underlying principles. Here we report a striking correspondence between the excitation dynamics of a laser driven gas of Rydberg atoms and the spreading of diseases, which in turn opens up a controllable platform for studying non-equilibrium dynamics on complex networks. The competition between facilitated excitation and spontaneous decay results in sub-exponential growth of the excitation number, which is empirically observed in real epidemics. Based on this we develop a quantitative microscopic susceptible-infected-susceptible model which links the growth and final excitation density to the dynamics of an emergent heterogeneous network and rare active region effects associated to an extended Griffiths phase. This provides physical insights into the nature of non-equilibrium criticality in driven many-body systems and the mechanisms leading to non-universal power-laws in the dynamics of complex systems.

Diffused metal-insulator transition in NdNiO3 film grown on BaTiO3 : Likely evidence of electronic Griffiths phase

2021 ◽  
Vol 5 (8) ◽  
Author(s):  
Parushottam Majhi ◽  
Sudipta Chatterjee ◽  
Ravindra Singh Bisht ◽  
V. Raghavendra Reddy ◽  
Barnali Ghosh ◽  
...  
Keyword(s):  
Insulator Transition ◽  
Griffiths Phase ◽  
Metal Insulator Transition ◽  
Metal Insulator

scholarly journals Griffiths phase of the Kondo insulator fixed point

2001 ◽  
Vol 226-230 ◽  
pp. 110-114 ◽  
Author(s):  
E. Miranda ◽  
V. Dobrosavljević
Keyword(s):  
Fixed Point ◽  
Griffiths Phase ◽  
Kondo Insulator

Exchange bias effect and Griffiths phase coexistence in the disordered cobaltite Gd0.5Sr0.5CoO3−δ

2018 ◽  
Vol 98 (21) ◽  
Author(s):  
I. Fita ◽  
I. O. Troyanchuk ◽  
T. Zajarniuk ◽  
P. Iwanowski ◽  
A. Wisniewski ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Phase Coexistence ◽  
Griffiths Phase ◽  
Bias Effect ◽  
Exchange Bias Effect

scholarly journals Magnetic behavior, Griffiths phase and magneto-transport study in 3d based nano-crystalline double perovskite Pr2CoMnO6

2019 ◽  
Vol 383 (19) ◽  
pp. 2326-2332 ◽  
Author(s):  
Ilyas Noor Bhatti ◽  
Imtiaz Noor Bhatti ◽  
Rabindra Nath Mahato ◽  
M.A.H. Ahsan
Keyword(s):  
Magnetic Behavior ◽  
Double Perovskite ◽  
Griffiths Phase ◽  
Transport Study ◽  
Nano Crystalline

Griffiths phase and exchange bias in La1−xCaxMnO3 (x=0.50, 0.67, and 0.75) nanoparticles

2010 ◽  
Vol 107 (3) ◽  
pp. 033906 ◽  
Author(s):  
S. M. Zhou ◽  
S. Y. Zhao ◽  
Y. Q. Guo ◽  
J. Y. Zhao ◽  
L. Shi
Keyword(s):  
Exchange Bias ◽  
Griffiths Phase

scholarly journals Erratum: Griffiths phase behaviour in a frustrated antiferromagnetic intermetallic compound

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Krishanu Ghosh ◽  
Chandan Mazumdar ◽  
R. Ranganathan ◽  
S. Mukherjee
Keyword(s):  
Intermetallic Compound ◽  
Phase Behaviour ◽  
Griffiths Phase

scholarly journals Griffiths phase behaviour in a frustrated antiferromagnetic intermetallic compound

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Krishanu Ghosh ◽  
Chandan Mazumdar ◽  
R. Ranganathan ◽  
S. Mukherjee
Keyword(s):  
Intermetallic Compound ◽  
Point Group ◽  
Phase Behaviour ◽  
Group Symmetry ◽  
Zero Field ◽  
Griffiths Phase ◽  
Capacity Measurement ◽  
Structural Anisotropy ◽  
Weiss Temperature ◽  
Geometrically Frustrated

Abstract The rare coexistence of a Griffiths phase (GP) and a geometrically frustrated antiferromagnetism in the non-stoichiometric intermetallic compound GdFe0.17Sn2 (the paramagnetic Weiss temperature θp ~ −59 K) is reported in this work. The compound forms in the Cmcm space group with large structural anisotropy (b/c ~ 4). Interestingly, all the atoms in the unit cell possess the same point group symmetry (Wycoff position 4c), which is rather rare. The frustration parameter, f = |θp|/TN has been established as 3.6, with the Néel temperature TN and Griffiths temperature TG being 16.5 and 32 K, respectively. The TG has been determined from the heat capacity measurement and also from the magnetocaloric effect (MCE). It is also shown that substantial difference in GP region may exist between zero field and field cooled measurements - a fact hitherto not emphasized so far.

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