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A series of thin films Fe$_{4-x}$Ge$_x$N (x=0-1) was fabricated onto MgO substrates by magnetron sputtering with the aim of studying the possible enhancement of the anomalous Nernst effect (ANE), envisaged based on Density Functional Theory…

The Mott relation between the electrical and thermoelectric transport coefficients normally holds for phenomena involving scattering. However, the anomalous Hall effect (AHE) in ferromagnets may arise from intrinsic spin-orbit interaction.…

Mesoscale and Nanoscale Physics · Physics 2008-09-12 Yong Pu , Daichi Chiba , Fumihiro Matsukura , Hideo Ohno , Jing Shi

By generalizing the Kubo-Streda formula for calculating electrical conductivities to the thermoelectric coefficients, we theoretically study the anomalous Nernst effect (ANE) on the surface of a topological insulator induced by a finite…

Mesoscale and Nanoscale Physics · Physics 2019-12-10 Yan-Yan Yang , Ming-Xun Deng , Wei Luo , R. Ma , Shi-Han Zheng , Rui-Qiang Wang

We report the anomalous Nernst effect (ANE), i.e. creation of electrical voltage transverse to the direction of applied temperature gradient and magnetic field in bulk samples of La1-xNaxMnO3 (x = 0.02, 0.05, 0.1 and 0.3) whose…

Materials Science · Physics 2018-11-07 Arup Ghosh , Rajasree Das , Ramanathan Mahendiran

Transverse thermoelectric conversion holds significant potential in addressing complex challenges faced by classical Seebeck/Peltier modules. A promising transverse thermoelectric phenomenon is the anomalous Nernst effect (ANE) originating…

Materials Science · Physics 2024-11-25 Takamasa Hirai , Fuyuki Ando , Hossein Sepehri-Amin , Ken-ichi Uchida

The anomalous Hall effect (AHE) and anomalous Nernst effect (ANE) are the transverse transport phenomena in magnetic materials, which reflect the Berry curvature arising from the electronic structure near the Fermi level. Lattice strain…

Noncollinear antiferromagnets have recently been attracting considerable interest partly due to recent surprising discoveries of the anomalous Hall effect (AHE) in them and partly because they have promising applications in…

Materials Science · Physics 2019-10-22 Guang-Yu Guo , Tzu-Cheng Wang

The non-uniform current distribution arisen from either current crowding effect or hot spot effect provides a method to tailor the interaction between thermal gradient and electron transport in magnetically ordered systems. Here we apply…

Mesoscale and Nanoscale Physics · Physics 2024-09-17 Jiuming Liu , Bin Rong , Hua Bai , Xinqi Liu , Yanghui Liu , Yifan Zhang , Yujie Xiao , Yuzhen Liang , Qi Yao , Liyang Liao , Yumeng Yang , Cheng Song , Xufeng Kou

Thermoelectric modules are a promising approach to energy harvesting and efficient cooling. In addition to the longitudinal Seebeck effect, recently transverse devices utilizing the anomalous Nernst effect (ANE) have attracted interest. For…

We investigated the voltages obtained in a thin Pt strip on a Permalloy film which was subject to in-plane temperature gradients and magnetic fields. The voltages detected by thin W-tips or bond wires showed a purely symmetric effect with…

We demonstrated a flexible thermoelectric (TE) sheet based on the longitudinal spin Seebeck effect (LSSE) that is especially suitable for heat-flow sensing applications. This TE sheet contained a Ni0.2Zn0.3Fe2.5O4 film which was formed on a…

In metallic ferromagnets, the Berry curvature of underlying quasiparticles can cause an electric voltage perpendicular to both magnetization and an applied temperature gradient, a phenomenon called the anomalous Nernst effect (ANE). Here,…

The presence of a finite Berry curvature $\left(\Omega\left(k\right)\right)$ leads to anomalous thermal effects. In this letter, we compute the coefficients for the anomalous Nernst effect $\left(ANE\right) $ and its spin analogue, the spin…

Materials Science · Physics 2018-07-04 Parijat Sengupta , Junxia Shi

A scannable laser beam is used to generate local thermal gradients in metallic (Co2FeAl) or insulating (Y3Fe5O12) ferromagnetic thin films. We study the resulting local charge and spin currents that arise due to the anomalous Nernst effect…

Thermoelectrics (TEs) are solid-state devices that can realize heat-electricity conversion. Transverse TEs require materials with a large Nernst effect, which typically requires a strong applied magnetic field. However, topological…

Materials Science · Physics 2025-07-08 Jiamin Wen , Kaustuv Manna , Dung Vu , Subhadeep Bej , Yu Pan , Claudia Felser , Brian Skinner , Joseph P. Heremans

Searching for a high anomalous Nernst effect (ANE) is crucial for thermoelectric energy conversion applications because the associated unique transverse geometry facilitates module fabrication. Topological ferromagnets with large Berry…

The interplay of magnetism and spin-orbit coupling on an Fe kagome lattice in Fe3Sn2 crystal produces a unique band structure leading to an order of magnitude larger anomalous Hall effect than in conventional ferromagnetic metals. In this…

Materials Science · Physics 2019-03-08 Y. Satake , K. Fujiwara , J. Shiogai , T. Seki , A. Tsukazaki

We report the experimental observation of the spin Seebeck effect (SSE) in Ag/CoFe noble metal/magnetic metal bilayers with a longitudinal structure. Thermal voltages jointly generated by the anomalous Nernst effect (ANE) and the SSE were…

Materials Science · Physics 2015-10-29 Y. Sheng , M. Y. Yang , Y. Cao , K. M. Cai , G. N. Wei , G. H. Yu , B. Zhang , X. Q. Ma , K. Y. Wang

A tuning of Fermi level (E$_F$) near Weyl points is one of the promising approaches to realize large anomalous Nernst effect (ANE). In this work, we introduce an efficient approach to tune E$_F$ for the Co$_2$MnAl Weyl semimetal through a…

Materials Science · Physics 2021-03-12 Rajkumar Modak , Kazuki Goto , Shigenori Ueda , Yoshio Miura , Ken-ichi Uchida , Yuya Sakuraba

A large transverse thermoelectric response, known as anomalous Nernst effect (ANE) has been recently observed in several topological magnets. Building a thermopile employing this effect has been the subject of several recent propositions.…

Applied Physics · Physics 2021-09-24 Xiaokang Li , Zengwei Zhu , Kamran Behnia