Anomalous Nernst effect in a microfabricated thermoelectric element made of chiral antiferromagnet Mn3Sn

2017 ◽  
Vol 111 (20) ◽  
pp. 202404 ◽  
Author(s):  
Hideki Narita ◽  
Muhammad Ikhlas ◽  
Motoi Kimata ◽  
Agustinus Agung Nugroho ◽  
Satoru Nakatsuji ◽  
...  
Keyword(s):  
Nernst Effect ◽  
Thermoelectric Element ◽  
Anomalous Nernst Effect

scholarly journals Colossal anomalous Nernst effect in a correlated noncentrosymmetric kagome ferromagnet

2021 ◽  
Vol 7 (13) ◽  
pp. eabf1467
Author(s):  
T. Asaba ◽  
V. Ivanov ◽  
S. M. Thomas ◽  
S. Y. Savrasov ◽  
J. D. Thompson ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electronic Structure ◽  
Theoretical Calculations ◽  
Zero Magnetic Field ◽  
Nernst Effect ◽  
Nodal Lines ◽  
Transverse Response ◽  
Narrow Bands ◽  
Strong Spin ◽  
Anomalous Nernst Effect

The transverse voltage generated by a temperature gradient in a perpendicularly applied magnetic field, termed the Nernst effect, has promise for thermoelectric applications and for probing electronic structure. In magnetic materials, an anomalous Nernst effect (ANE) is possible in a zero magnetic field. We report a colossal ANE in the ferromagnetic metal UCo0.8Ru0.2Al, reaching 23 microvolts per kelvin. Uranium’s 5f electrons provide strong electronic correlations that lead to narrow bands, a known route to producing a large thermoelectric response. In addition, uranium’s strong spin-orbit coupling produces an intrinsic transverse response in this material due to the Berry curvature associated with the relativistic electronic structure. Theoretical calculations show that in UCo0.8Ru0.2Al at least 148 Weyl nodes, and two nodal lines, exist within 60 millielectron volt of the Fermi level. This work demonstrates that magnetic actinide materials can host strong Nernst and Hall responses due to their combined correlated and topological nature.

scholarly journals Giant anomalous Nernst effect in noncollinear antiferromagnetic Mn-based antiperovskite nitrides

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Xiaodong Zhou ◽  
Jan-Philipp Hanke ◽  
Wanxiang Feng ◽  
Stefan Blügel ◽  
Yuriy Mokrousov ◽  
...  
Keyword(s):  
Nernst Effect ◽  
Anomalous Nernst Effect

Effect of sample size on anomalous Nernst effect in chiral antiferromagnetic Mn3Sn devices

2020 ◽  
Vol 116 (7) ◽  
pp. 072404 ◽  
Author(s):  
Hideki Narita ◽  
Tomoya Higo ◽  
Muhammad Ikhlas ◽  
Satoru Nakatsuji ◽  
YoshiChika Otani
Keyword(s):  
Sample Size ◽  
Nernst Effect ◽  
Anomalous Nernst Effect

scholarly journals Large anomalous Nernst effect in thin films of the Weyl semimetal Co2MnGa

2018 ◽  
Vol 113 (21) ◽  
pp. 212405 ◽  
Author(s):  
Helena Reichlova ◽  
Richard Schlitz ◽  
Sebastian Beckert ◽  
Peter Swekis ◽  
Anastasios Markou ◽  
...  
Keyword(s):  
Thin Films ◽  
Nernst Effect ◽  
Weyl Semimetal ◽  
Anomalous Nernst Effect

Anomalous Nernst Effect of Perpendicularly Magnetic Anisotropy TbFeCo Thin Films

2016 ◽  
Vol 45 (7) ◽  
pp. 3570-3575 ◽  
Author(s):  
Ryo Ando ◽  
Takashi Komine ◽  
Yasuhiro Hasegawa
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Nernst Effect ◽  
Anomalous Nernst Effect
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