ferromagnetic order
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2021 ◽  
pp. 2106551
Author(s):  
Seok Joon Yun ◽  
Byeong Wook Cho ◽  
Thapa Dinesh ◽  
Dae Hee Yang ◽  
Yong In Kim ◽  
...  
Keyword(s):  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Na Hyun Jo ◽  
Yun Wu ◽  
Thaís V. Trevisan ◽  
Lin-Lin Wang ◽  
Kyungchan Lee ◽  
...  

AbstractElectrons navigate more easily in a background of ordered magnetic moments than around randomly oriented ones. This fundamental quantum mechanical principle is due to their Bloch wave nature and also underlies ballistic electronic motion in a perfect crystal. As a result, a paramagnetic metal that develops ferromagnetic order often experiences a sharp drop in the resistivity. Despite the universality of this phenomenon, a direct observation of the impact of ferromagnetic order on the electronic quasiparticles in a magnetic metal is still lacking. Here we demonstrate that quasiparticles experience a significant enhancement of their lifetime in the ferromagnetic state of the low-density magnetic semimetal EuCd2As2, but this occurs only in selected bands and specific energy ranges. This is a direct consequence of the magnetically induced band splitting and the multi-orbital nature of the material. Our detailed study allows to disentangle different electronic scattering mechanisms due to non-magnetic disorder and magnon exchange. Such high momentum and energy dependence quasiparticle lifetime enhancement can lead to spin selective transport and potential spintronic applications.


2021 ◽  
pp. 130812
Author(s):  
Yi Zhou ◽  
Qing He ◽  
Fei Zhou ◽  
Yong Liu ◽  
Zhonghong Lai ◽  
...  

2021 ◽  
Vol 410 ◽  
pp. 3-8
Author(s):  
Viktor N. Pustovoit ◽  
Yuri V. Dolgachev

The formation energy of martensite nuclei in the austenite matrix is calculated. Nanoclusters with ferromagnetic order, which exist in austenite above the Curie temperature, reduce the formation energy of a critical martensite nucleation center when exposed to an external magnetic field. The data obtained are explained by the magnetic separation of the initial phase under the action of a magnetic field. A fluctuation increase in nanovolumes with a ferromagnetic order in austenite increases the energy in a atoms group of the matrix phase with a parallel spins arrangement. As a result, the nucleation rate of the martensite phase increases and the martensitic transformation proceeds more completely.


AIP Advances ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 085016
Author(s):  
Junkang Xu ◽  
Yang Yang ◽  
Hongwei Xiong ◽  
Xianqing Lin

2021 ◽  
Vol 118 (15) ◽  
pp. 152408
Author(s):  
Cinthia Piamonteze ◽  
Francis Bern ◽  
Sridhar Reddy Venkata Avula ◽  
Michał Studniarek ◽  
Carmine Autieri ◽  
...  
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2020 ◽  
Vol 33 (11) ◽  
pp. 115802
Author(s):  
Santanu Pakhira ◽  
N S Sangeetha ◽  
V Smetana ◽  
A-V Mudring ◽  
D C Johnston

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