Long-range effective interactions and spin canting: A model for amorphous magnetism

1988 ◽  
Vol 38 (16) ◽  
pp. 11733-11736 ◽  
Author(s):  
W. M. Saslow ◽  
G. N. Parker
CrystEngComm ◽  
2010 ◽  
Vol 12 (2) ◽  
pp. 395-400 ◽  
Author(s):  
Fu-Ping Huang ◽  
Jin-Lei Tian ◽  
Dong-Dong Li ◽  
Gong-Jun Chen ◽  
Wen Gu ◽  
...  

2008 ◽  
Vol 47 (20) ◽  
pp. 9152-9154 ◽  
Author(s):  
Zhiming Duan ◽  
Yan Zhang ◽  
Bin Zhang ◽  
Daoben Zhu

Polyhedron ◽  
2009 ◽  
Vol 28 (9-10) ◽  
pp. 1796-1801 ◽  
Author(s):  
Sebastian Thallmair ◽  
Wolfgang Bauer ◽  
Birgit Weber

2016 ◽  
Vol 113 (17) ◽  
pp. 4652-4657 ◽  
Author(s):  
Joshua P. Steimel ◽  
Juan L. Aragones ◽  
Helen Hu ◽  
Naser Qureshi ◽  
Alfredo Alexander-Katz

Particle–particle interactions determine the state of a system. Control over the range of such interactions as well as their magnitude has been an active area of research for decades due to the fundamental challenges it poses in science and technology. Very recently, effective interactions between active particles have gathered much attention as they can lead to out-of-equilibrium cooperative states such as flocking. Inspired by nature, where active living cells coexist with lifeless objects and structures, here we study the effective interactions that appear in systems composed of active and passive mixtures of colloids. Our systems are 2D colloidal monolayers composed primarily of passive (inactive) colloids, and a very small fraction of active (spinning) ferromagnetic colloids. We find an emergent ultra–long-range attractive interaction induced by the activity of the spinning particles and mediated by the elasticity of the passive medium. Interestingly, the appearance of such interaction depends on the spinning protocol and has a minimum actuation timescale below which no attraction is observed. Overall, these results clearly show that, in the presence of elastic components, active particles can interact across very long distances without any chemical modification of the environment. Such a mechanism might potentially be important for some biological systems and can be harnessed for newer developments in synthetic active soft materials.


2003 ◽  
Vol 68 (13) ◽  
Author(s):  
E. Granado ◽  
C. D. Ling ◽  
J. J. Neumeier ◽  
J. W. Lynn ◽  
D. N. Argyriou

2020 ◽  
Vol 73 (3) ◽  
pp. 375-382
Author(s):  
Huang-Fei Qin ◽  
You Li ◽  
Xing-Mei Qin ◽  
Hai-Ye Li ◽  
He-Dong Bian ◽  
...  

1994 ◽  
Vol 03 (supp01) ◽  
pp. 435-521 ◽  
Author(s):  
P.-G. REINHARD ◽  
C. TOEPFFER

A wide variety of schemes to compute short-range and long-range correlations is discussed. The emphasis lies on an overview and on the interrelations between the various schemes, rather than on a detailed presentation. The need for effective interactions, and their proper handling is outlined at the end.


2017 ◽  
Vol 31 (14) ◽  
pp. 1750116
Author(s):  
Evaristo Mamani ◽  
M. Calcina-Nogales ◽  
Diego Sanjinés

We consider the semiclassical model of an extended tight-binding Hamiltonian comprising nearest- and next-to-nearest-neighbor interactions for a charged particle hopping in a lattice in the presence of a static arbitrary field and a rapidly oscillating uniform field. The application of Kapitza’s method yields a time-independent effective Hamiltonian with long-range hopping elements that depend on the external static and oscillating fields. Our calculations show that the semiclassical approximation is quite reliable as it yields, for a homogeneous oscillating field, the same effective hopping elements as those derived within the quantum approach. Besides, by controlling the oscillating field, we can engineer the interactions so as to suppress the otherwise dominant interactions (nearest neighbors) and leave as observable effects those due to the otherwise remanent interactions (distant neighbors).


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