Coherent-incoherent crossover of charge dynamics in the ferromagnetic ground state of manganites:R0.6Sr0.4MnO3(R=La-Sm)

1999 ◽  
Vol 60 (14) ◽  
pp. 10362-10366 ◽  
Author(s):  
E. Saitoh ◽  
Y. Okimoto ◽  
Y. Tomioka ◽  
T. Katsufuji ◽  
Y. Tokura
Keyword(s):  
Ground State ◽  
Charge Dynamics ◽  
Ferromagnetic Ground State

scholarly journals Investigation of a Structural Phase Transition and Magnetic Structure of Na2BaFe(VO4)2: A Triangular Magnetic Lattice with a Ferromagnetic Ground State

2017 ◽  
Vol 56 (24) ◽  
pp. 14842-14849 ◽  
Author(s):  
Liurukara D. Sanjeewa ◽  
Vasile O. Garlea ◽  
Michael A. McGuire ◽  
Matthias Frontzek ◽  
Colin D. McMillen ◽  
...  
Keyword(s):  
Phase Transition ◽  
Magnetic Structure ◽  
Structural Phase Transition ◽  
Ground State ◽  
Structural Phase ◽  
Ferromagnetic Ground State

scholarly journals GGA/PBE study of the spin isomers of Fe34,40, Co23,34, and Co12Cu Clusters with Selected Geometries

2017 ◽  
Vol 56 (3) ◽  
Author(s):  
Faustino Aguilera-Granja ◽  
Andrés Vega ◽  
Luis Carlos Balbás
Keyword(s):  
Ground State ◽  
Density Functional ◽  
Energy Difference ◽  
Many Body ◽  
Generalized Gradient ◽  
Structural Isomers ◽  
Functional Theory ◽  
Ferromagnetic Ground State ◽  
Spin Isomers ◽  
Pseudo Potential

In a recent beam deflecting experiment was found that high and low spin states of pure Fe<sub>n</sub> and Co<sub>n</sub> clusters with <em>n</em> ≤ 300 atoms coexist at cryogenic temperatures. In this work we have studied the high spin (HS) and low spin (LS) states of several structural isomers of Co<sub>23</sub>, Co<sub>34</sub>, Fe<sub>34</sub>, and Fe<sub>40</sub> using the generalized gradient approximation (GGA) to density functional theory as implemented in the first-principles pseudo-potential code SIESTA. The calculated energy difference between these HS and LS isomers is not consistent with the observed coexistence, which can be due to an insufficient account of many body correlation effects in the GGA description, or to unknown isomer structures of these clusters. We have calculated within the same tools the magnetic isomers of Co<sub>12</sub>Cu cluster aimed to re-visit a former DFT prediction of an anti-ferromagnetic ground state. We find, however, a ferromagnetic ground state as expected on physical grounds. Our results exemplify the difficulties of the current DFT approaches to describe the magnetic properties of transition metal systems.

Predicted 2D ferromagnetic Janus VSeTe monolayer with high Curie temperature, large valley polarization and magnetic crystal anisotropy

Nanoscale ◽  
2020 ◽  
Vol 12 (44) ◽  
pp. 22735-22742
Author(s):  
Zhaoyong Guan ◽  
Shuang Ni
Keyword(s):  
Curie Temperature ◽  
Ground State ◽  
High Curie Temperature ◽  
Valley Splitting ◽  
Crystal Anisotropy ◽  
Valley Polarization ◽  
Ferromagnetic Ground State ◽  
Plane Direction

VSeTe shows ferromagnetic ground state with high Curie temperature and obvious valley splitting, and its EA along in-plane direction.

scholarly journals 31P-NMR and µSR Studies of Filled Skutterudite Compound SmFe4P12: Evidence for Heavy Fermion Behavior with Ferromagnetic Ground State

2006 ◽  
Vol 75 (12) ◽  
pp. 124717 ◽  
Author(s):  
Kenichi Hachitani ◽  
Hideto Fukazawa ◽  
Yoh Kohori ◽  
Isao Watanabe ◽  
Yuichi Yoshimitsu ◽  
...  
Keyword(s):  
Ground State ◽  
Heavy Fermion ◽  
31P Nmr ◽  
Filled Skutterudite ◽  
Ferromagnetic Ground State ◽  
Skutterudite Compound ◽  
Heavy Fermion Behavior

Transformation from a weakly to strongly ferromagnetic ground state in the Y 1−t Lu t (Co 0.88 Al 0.12 ) 2 system

1994 ◽  
Vol 135 (3) ◽  
pp. 326-332 ◽  
Author(s):  
I.S. Dubenko ◽  
R.Z. Levitin ◽  
A.S. Markosyan ◽  
V.V. Snegirev ◽  
A.Yu. Sokolov
Keyword(s):  
Ground State ◽  
Ferromagnetic Ground State
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