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相关论文: Nonlocal Drag Thermoelectricity Generated by Ferro…

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We theoretically predict that the motion of a polar crystalline layer between two graphene planes exerts Coulomb drag on electrons in graphene, inducing a DC drag current. The physical mechanism underlying this drag arises from intervalley…

介观与纳米尺度物理 · 物理学 2025-01-03 A. L. Chudnovskiy

We formulate a theory on the dynamics of conduction electrons in the presence of moving magnetic textures in ferromagnetic materials. We show that the variation of local magnetization in both space and time gives rise to topological fields,…

材料科学 · 物理学 2008-03-12 Shengyuan A. Yang , Di Xiao , Qian Niu

The thermopower and Nernst-Ettingshausen (NE) effect in degenerate semiconductors and semimetals placed in high electric and magnetic fields are calculated by taking into account the heating of both electrons and phonons as well as their…

凝聚态物理 · 物理学 2007-05-23 M. M. Babaev , T. M. Gassym , M. Tas , M. Tomak

We calculated a spin-polarized conductance in the almost unexplored nanostructure "high temperature ferromagnetic insulator/ graphene/ ferroelectric film" with a special attention to the impact of electric polarization rotation in a…

材料科学 · 物理学 2020-09-02 Eugene A. Eliseev , Anna N. Morozovska , Maksym V. Strikha

We study ferroelectricity in thin films of pseudo-proper ferroelectrics such as the so-called spiral multiferroics. We find that this type of ferroelectricity stands better against depolarizing fields than conventional one. Its…

强关联电子 · 物理学 2015-05-13 A. Cano , A. P. Levanyuk

The chirality-dependent magnetoelectric properties of Neel-type domain walls in iron garnet films is observed. The electrically driven magnetic domain wall motion changes the direction to the opposite with the reversal of electric polarity…

材料科学 · 物理学 2012-05-23 A. P. Pyatakov , D. A. Sechin , A. V. Nikolaev , E. P. Nikolaeva , A. S. Logginov

Using the modified Landau-Ginsburg-Devonshire thermodynamic theory, it is found that the coupling between stress gradient and polarization, or flexoelectricity, has significant effect on ferroelectric properties of epitaxial thin films,…

材料科学 · 物理学 2012-08-13 Hao Zhou , Jiawang Hong , Yihui Zhang , Faxin Li , Yongmao Pei , Daining Fang

It has been proposed that paramagnetic materials exhibit a unique thermoelectric effect near the ferromagnetic transition point due to spin fluctuations. This phenomenon is often referred to as paramagnon drag. We calculate the contribution…

强关联电子 · 物理学 2022-01-12 Junya Endo , Hiroyasu Matsuura , Masao Ogata

The Nernst effect, a transverse thermoelectric phenomenon, has attracted significant attention for its potential in energy conversion, thermoelectrics, and spintronics. However, achieving high performance and versatility at low temperatures…

介观与纳米尺度物理 · 物理学 2024-06-25 Gabriele Pasquale , Zhe Sun , Kenji Watanabe , Takashi Taniguchi , Andras Kis

We analyse the interaction between charges and graphene layers. The electric polarisability of graphene induces a force, that can be described by an image charge. The analysis shows that graphene can be described as an imperfect conductor…

介观与纳米尺度物理 · 物理学 2016-05-27 Francisco Guinea , Niels R. Walet

A ferroelectric is a material with a polar structure whose polarity can be reversed by applying an electric field. In metals, the itinerant electrons tend to screen electrostatic forces between ions, helping to explain why polar metals are…

The utilization of ferromagnetic (FM) materials in thermoelectric devices allows one to have a simpler structure and/or independent control of electric and thermal conductivities, which may further remove obstacles for this technology to be…

This letter calculates the contribution of electron-phonon interaction to thermoelectric effects in graphene. One considers the case of free standing graphene taking into account interaction with intrinsic acoustic phonons. The temperatures…

介观与纳米尺度物理 · 物理学 2015-08-18 S. V. Koniakhin , E. D. Eidelman

The abilities to inject and detect spin carriers are fundamental for research on transport and manipulation of spin information. Pure electronic spin currents have been recently studied in nanoscale electronic devices using a non-local…

介观与纳米尺度物理 · 物理学 2012-09-25 I. J. Vera-Marun , V. Ranjan , B. J. van Wees

Transport in photoactive graphene heterostructures, originating from the dynamics of photogenerated hot carriers, is governed by the processes of thermionic emission, electron-lattice thermal imbalance and cooling. These processes give rise…

介观与纳米尺度物理 · 物理学 2015-04-15 J. F. Rodriguez-Nieva , M. S. Dresselhaus , L. S. Levitov

Transverse thermophotovoltaics has been conceptually proposed as a paradigm distinct from conventional junction-based photovoltaics, but has so far lacked a theoretical foundation. In this Letter, we establish a microscopic formalism of…

介观与纳米尺度物理 · 物理学 2026-05-28 Dingwei He , Gaomin Tang

We demonstrate electrically switchable, non-volatile dipoles in graphene/thin hBN/$\alpha$-RuCl$_3$ heterostructures, stabilized purely by interfacial charge transfer across an atomically thin dielectric barrier. This mechanism requires no…

We report on the direct observation of the thermoelectric transport in a nondegenerate correlated electron system formed on the surface of liquid helium. We find that the microwave-induced excitation of the vertical transitions of electrons…

其他凝聚态物理 · 物理学 2021-11-10 Ivan Kostylev , A. A. Zadorozhko , M. Hatifi , Denis Konstantinov

Attaching a superconductor in good contact with a normal metal makes rise to a proximity effect where the superconducting correlations leak into the normal metal. An additional contact close to the first one makes it possible to carry a…

超导电性 · 物理学 2010-06-25 Pauli Virtanen , Tero T. Heikkilä

It is generally accepted that oxygen vacancies play a central role in the emergence of ferroelectricity for HfO2-based materials, but the underlying mechanism still remains elusive. Herein, starting from the basic characterization circuit,…

材料科学 · 物理学 2021-12-28 Yong Cheng , Maoyuan Zheng , Xingwang Zhang , Hao Dong , Yitian Jiang , Jinliang Wu , Jing Qi , Zhigang Yin