scholarly journals Temperature-dependent spin polarization of Heusler Co2MnSi from the disordered local-moment approach: Effects of atomic disordering and nonstoichiometry

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Kenji Nawa ◽  
Ivan Kurniawan ◽  
Keisuke Masuda ◽  
Yoshio Miura ◽  
Christopher E. Patrick ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Local Moment ◽  
Temperature Dependent ◽  
Moment Approach

The Spin-Disorder Resistivity: The Disordered Local Moment Approach

2019 ◽  
Vol 289 ◽  
pp. 185-191
Author(s):  
J. Kudrnovsky ◽  
Vaclav Drchal ◽  
Ilja Turek ◽  
David Wagenknecht ◽  
Sergii Khmelevskyi
Keyword(s):  
Moment Method ◽  
Heusler Alloys ◽  
Tight Binding ◽  
Local Moment ◽  
Orbital Method ◽  
Spin Moment ◽  
Potential Approximation ◽  
Spin Disorder ◽  
Moment Approach ◽  
Ni And Its Alloys

The spin-disorder resistivity (SDR) of a broad range of magneticmaterials, both ordered and disordered, is reviewed.We identify the SDR at the critical temperature with the residualresistivity of the corresponding system evaluated in the frameworkof the disordered local moment (DLM) model.The underlying electronic structure is determined in the frameworkof the tight-binding linear muffin-tin orbital method which employsthe coherent potential approximation to describe the DLM stateand chemical disorder.The DLM fixed-spin moment method is used in the case when the DLMmoment collapses.The Kubo-Greenwood approach is employed to estimate the resistivityof the DLM state.Formalism is applied to Fe and Ni and its alloys, Heusler alloys,and ordered ferromagnetic and antiferromagnetic alloys.Finally, the SDR of the Earth's core will be studied using thesame formalism.Calculations are compared with available experimental data.

A local moment approach to the degenerate Anderson impurity model

2009 ◽  
Vol 21 (37) ◽  
pp. 375602 ◽  
Author(s):  
Martin R Galpin ◽  
Anne B Gilbert ◽  
David E Logan
Keyword(s):  
Local Moment ◽  
Impurity Model ◽  
Anderson Impurity Model ◽  
Moment Approach
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