Geometric wavefront dislocations of RKKY interaction in graphene

2021 ◽  
Vol 104 (24) ◽  
Author(s):  
Shu-Hui Zhang ◽  
Jin Yang ◽  
Ding-Fu Shao ◽  
Wen Yang ◽  
Kai Chang
Keyword(s):  
Rkky Interaction

scholarly journals Effect of magnetic field and chemical potential on the RKKY interaction in the α−T3 lattice

2021 ◽  
Vol 103 (7) ◽  
Author(s):  
Oleksiy Roslyak ◽  
Godfrey Gumbs ◽  
Antonios Balassis ◽  
Heba Elsayed
Keyword(s):  
Magnetic Field ◽  
Chemical Potential ◽  
Rkky Interaction

Effect of antiferromagnetic RKKY interaction and magnetic field in a two-impurity Kondo system

2010 ◽  
Vol 82 (15) ◽  
Author(s):  
Emi Minamitani ◽  
Wilson Agerico Diño ◽  
Hiroshi Nakanishi ◽  
Hideaki Kasai
Keyword(s):  
Magnetic Field ◽  
Rkky Interaction ◽  
Kondo System

Magnetic States of Nanoparticles with RKKY Interaction

2013 ◽  
Vol 774-776 ◽  
pp. 523-527 ◽  
Author(s):  
Valery I. Belokon ◽  
Konstantin V. Nefedev ◽  
Vitalii Y. Kapitan ◽  
Olga I. Dyachenko
Keyword(s):  
Spin Glass ◽  
Effective Magnetic Moment ◽  
Magnetic State ◽  
Field Method ◽  
Spherical Nanoparticles ◽  
Rkky Interaction ◽  
Interaction Field ◽  
Magnetic States ◽  
Antiferromagnetic Spin ◽  
Nonmagnetic Matrix

Conditions of phase transitions in systems of identical ferromagnetic spherical nanoparticles randomly distributed in metal nonmagnetic matrix and superlattices of small number of nanoparticles with the Ruderman-Kittel-Kasuya-Yosida interaction are researched. In the framework of the Ising model the behavior of superspins is well described with the random interaction field method. The alteration of the effective magnetic moment due to the change in volume affects the choice of the magnetic state of the system: ferromagnetic spin glass or antiferromagnetic spin glass. The ground state of superlattice depends on the distance between particles.

scholarly journals RKKY Interaction in Graphene at Finite Temperature

2019 ◽  
Author(s):  
Eugene Kogan
Keyword(s):  
Finite Temperature ◽  
Thermodynamic Potential ◽  
Real Space ◽  
Magnetic Impurities ◽  
Zero Temperature ◽  
Rkky Interaction ◽  
Imaginary Time ◽  
Direct Evaluation ◽  
Time Representation ◽  
Short Notice

In our publication from 8 years ago1 we calculated RKKY interaction between two magnetic impurities in graphene. The consideration was based on the perturbation theory for the thermodynamic potential in the imaginary time representation and direct evaluation of real space spin susceptibility. Only the case of zero temperature was considered. We show in this short notice that the approach can be easily generalized to the case of finite temperature.

scholarly journals Electrically controllable RKKY interaction in semiconductor quantum wires

2010 ◽  
Vol 81 (11) ◽  
Author(s):  
Jia-Ji Zhu ◽  
Kai Chang ◽  
Ren-Bao Liu ◽  
Hai-Qing Lin
Keyword(s):  
Quantum Wires ◽  
Rkky Interaction

RKKY interaction in topological crystalline insulators

2020 ◽  
Author(s):  
Seyyed Hosein Ganjipour
Keyword(s):  
Band Structure ◽  
Exchange Coupling ◽  
Magnetic Impurities ◽  
Rkky Interaction ◽  
Magnetic Ground State ◽  
Magnetic Exchange ◽  
Magnetic Exchange Coupling ◽  
Spatial Configurations ◽  
State Band ◽  
Topological Crystalline Insulators

We theoretically study the Ruderman-Kittle-Kasuya-Yosida (RKKY) interaction between two magnetic impurities embedded on the (001) surface of a topological crystalline insulator (TCI), using the Green’s function method. Highly anisotropic band structure of TCI, gives rise to a highly anisotropic magnetic exchange coupling. We show that the interaction is oscillatory; the amplitude and wavelength of oscillations have angular dependence arising from the anisotropy of the surface state band structure. The spatial configurations of the magnetic impurities can also dramatically change the quality and quantity of the RKKY interaction. We find a strong anisotropy of the exchange interaction and the magnetic ground state of two magnetic adatoms can be tuned by changing the rotational configuration of impurities. It is found that the three types of interactions contribute to the magnetic exchange coupling in the (001) TCI surfaces: the Heisenberg, Dzyaloshinsky-Moriya, and Ising types. Our results will open up a new route toward spintronics based on TCIs.

scholarly journals RKKY interaction in Mn-doped 4 × 4 Luttinger systems

2019 ◽  
Vol 125 (23) ◽  
pp. 233903 ◽  
Author(s):  
Sonu Verma ◽  
Arijit Kundu ◽  
Tarun Kanti Ghosh
Keyword(s):  
Rkky Interaction ◽  
Mn Doped
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