中文
相关论文

相关论文: Heat flux sensing by anomalous Nernst effect in Fe…

200 篇论文

To develop effective thermal management strategies for GaN transistors, it is essential to accurately predict the device junction temperature. Since the width of the heat generation in the devices is comparable to phonon mean free paths of…

介观与纳米尺度物理 · 物理学 2023-02-28 Zhi-Ke Liu , Yang Shen , Han-Ling Li , Bing-Yang Cao

We investigate the influence of AlN buffer thickness on the structural, electrical, and thermal properties of AlGaN/GaN high-electron mobility transistors (HEMTs) grown on semi-insulating SiC substrates by metal-organic chemical vapor…

材料科学 · 物理学 2026-01-30 Minho Kim , Dat Q. Tran , Plamen P. Paskov , U. Choi , O. Nam , Vanya Darakchieva

A large, strongly temperature-dependent Nernst coefficient, $\nu$, is observed between $T$ = 2 K and 300 K for CeCu$_2$Si$_2$ and Ce$_{0.8}$La$_{0.2}$Cu$_2$Si$_2$. The enhanced $\nu(T)$ is determined by the asymmetry of the on-site Kondo…

强关联电子 · 物理学 2013-05-30 Peijie Sun , Frank Steglich

Synthesis of crystallographically well-defined thin films of topological materials is important for unraveling their mesoscale quantum properties and for device applications. Mn$_3$Ge, an antiferromagnetic Weyl semimetal with a chiral…

The anomalous Hall and Nernst effects describe the voltage drop perpendicular to an applied current and temperature gradient due to the magnetization of a magnetic material. These effects can be utilized to measure the Berry curvature at…

强关联电子 · 物理学 2024-02-01 Longfei Li , Shuyue Guan , Shengwei Chi , Jiawei Li , Xinxuan Lin , Gang Xu , Shuang Jia

The longitudinal spin Seebeck effect is measured on the ferromagnetic insulator Fe$_3$O$_4$ with the ferromagnetic metal Co$_{0.2}$Fe$_{0.6}$B$_{0.2}$ (CoFeB) as the spin detector. By using a non-magnetic spacer material between the two…

介观与纳米尺度物理 · 物理学 2014-09-09 Stephen M. Wu , Jason Hoffman , John E. Pearson , Anand Bhattacharya

We predict a large anomalous Nernst effect in the inverse Heusler compensated ferrimagnets Ti$_2$Mn$X$ ($X$=Al,Ga,In) with vanishing net magnetic moments. Though the net magnetic moment is zero, the Weyl points in these systems lead to a…

材料科学 · 物理学 2020-03-30 Jonathan Noky , Jacob Gayles , Claudia Felser , Yan Sun

We present a study of the Seebeck and Nernst coefficients of Fe$_{1+y}$Te$_{1-x}$Se$_{x}$ extended up to 28 T. The large magnitude of the Seebeck coefficient in the optimally doped sample tracks a remarkably low normalized Fermi…

超导电性 · 物理学 2012-04-18 A. Pourret , L. Malone , A. B. Antunes , C. S. Yadav , P. L. Paulose , B. Fauqué , K. Behnia

We report anomalous Hall effect (AHE) in single crystals of quasi-two-dimensional Fe$_{3-x}$GeTe$_2$ ($x \approx 0.36$) ferromagnet grown by the flux method which induces defects on Fe site and bad metallic resistivity. Fe K-edge x-ray…

强关联电子 · 物理学 2018-04-18 Yu Liu , Eli Stavitski , Klaus Attenkofer , C. Petrovic

Resolving the structure of energy bands in transport experiments is a major challenge in condensed matter physics and material science. Sometimes, however, traditional electrical conductance or resistance measurements only provide very…

材料科学 · 物理学 2018-12-19 Jonathan Noky , Johannes Gooth , Claudia Felser , Yan Sun

We report a measurement for the anomalous Nernst effects induced by a temperature gradient in [CoSiB/Pt] multilayer films with perpendicular magnetic anisotropy. The Nernst voltage shows a characteristic hysteresis which reflects the…

材料科学 · 物理学 2013-10-01 O. Kelekci , H. N. Lee , T. W. Kim , H. Noh

Spatial distribution of temperature modulation due to anomalous Ettingshausen effect (AEE) is visualized in a ferromagnetic FePt thin film with in-plane and out-of-plane magnetizations using the lock-in thermography technique. Comparing the…

介观与纳米尺度物理 · 物理学 2018-04-16 T. Seki , R. Iguchi , K. Takanashi , K. Uchida

We report on the magnetic properties of a special configuration of a FeRh thin film. An anomalous behavior on the magnetisation vs. temperature was observed when low magnetic fields are applied in the plane of a thin layer of FeRh deposited…

Unlike the conventional (linear) anomalous Nernst effect, the non-linear anomalous Nernst effect (NLANE) can survive in an inversion symmetry broken system even in the presence of time-reversal symmetry. Using semiclassical Boltzmann…

介观与纳米尺度物理 · 物理学 2019-12-03 Chuanchang Zeng , Snehasish Nandy , A. Taraphder , Sumanta Tewari

Co$_3$Sn$_2$S$_2$ is believed to be a magnetic Weyl semimetal. It displays large anomalous Hall, Nernst and thermal Hall effects with a remarkably large anomalous Hall angle. Here, we present a comprehensive study of how substituting Co by…

强关联电子 · 物理学 2023-11-28 Jie Liu , Linchao Ding , Liangcai Xu , Xiaokang Li , Kamran Behnia , Zengwei Zhu

In order to investigate the anomalous heat effect (AHE) in NiCu multilayer thin film, photon radiation calorimetry has been developed. Three types of photon detectors are employed to cover a wide range of wavelengths from 0.3 um to 5.5 um,…

仪器与探测器 · 物理学 2024-10-01 J. Kasagi , T. Itoh , Y. Shibasaki , T. Takahashi , S. Yamauchi , Y. Iwamura

The sensing performance of anomalous Hall effect (AHE) magnetic sensors is investigated in terms of their sensitivity, the power spectrum of their voltage noise, and their detectivity. Special attention is paid to the effect of the…

介观与纳米尺度物理 · 物理学 2025-05-05 Hiroko Arai , Hiroshi Imamura

The phase immiscibility and the excellent matching between Ag(001) and Fe(001) unit cells (mismatch 0.8 %) make Fe/Ag growth attractive in the field of low dimensionality magnetic systems. Intermixing could be drastically limited at…

Heusler type compounds have long been recognized as potential thermoelectric (TE) materials. Here, the experimentally observed TE properties of Fe$_{2}$VAl are understood through electronic structure calculations in the temperature range of…

材料科学 · 物理学 2022-04-20 Shamim Sk , P. Devi , Sanjay Singh , Sudhir K. Pandey

The anomalous Nernst effect is the thermoelectric counterpart of the anomalous Hall effect, which can emerge in magnetic materials or topological materials without magnetic field. Such effect is critical to both fundamental topological…