journal article·2022-01Open access

Giant Thermal Transport Tuning at a Metal/Ferroelectric Interface

Yipeng Zang, Chen Di, Zhiming Geng, Xuejun Yan, Dianxiang Ji, Ningchong Zheng, Xingyu Jiang, Hanyu Fu, Jianjun Wang, Wei Guo, Haoying Sun, Lu Han, Yunlei Zhou, Zhengbin Gu, Desheng Kong, Hugo Aramberri, Claudio Cazorla, Jorge Íñiguez, Riccardo Rurali, Longqing Chen, Jian Zhou, Di Wu, Minghui Lu, Yuefeng Nie, Yanfeng Chen, Xiaoqing Pan

Advanced Materials· Volume 34· Issue 3

Abstract

Abstract Interfacial thermal transport plays a prominent role in the thermal management of nanoscale objects and is of fundamental importance for basic research and nanodevices. At metal/insulator interfaces, a configuration commonly found in electronic devices, heat transport strongly depends upon the effective energy transfer from thermalized electrons in the metal to the phonons in the insulator. However, the mechanism of interfacial electron–phonon coupling and thermal transport at metal/insulator interfaces is not well understood. Here, the observation of a substantial enhancement of the interfacial thermal resistance and the important role of surface charges at the metal/ferroelectric interface in an Al/BiFeO3 membrane are reported. By applying uniaxial strain, the interfacial thermal resistance can be varied substantially (up to an order of magnitude), which is attributed to the renormalized interfacial electron–phonon coupling caused by the charge redistribution at the interface due to the polarization rotation. These results imply that surface charges at a metal/insulator interface can substantially enhance the interfacial electron–phonon‐mediated thermal coupling, providing a new route to optimize the thermal transport performance in next‐generation nanodevices, power electronics, and thermal logic devices.
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Research context

OpenAlex topics: Thermal properties of materials · Ferroelectric and Piezoelectric Materials · Advanced Thermoelectric Materials and Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Science Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China

Department of Materials Science and Engineering Pennsylvania State University State College PA 16802 USA

Materials Research and Technology Department Luxembourg Institute of Science and Technology (LIST) Avenue des Hauts‐Fourneaux 5 Esch/Alzette L‐4362 Luxembourg

Departament de Física Universitat Politècnica de Catalunya Campus Nord B4‐B5 Barcelona E‐08034 Spain

Department of Physics and Materials Science University of Luxembourg 41 Rue du Brill Belvaux L‐4422 Luxembourg

Institut de Ciència de Materials de Barcelona ICMAB‐CSIC Campus UAB Bellaterra 08193 Spain

Department of Physics Southern University of Science and Technology Shenzhen 518055 China

Department of Materials Science and Engineering and Department of Physics and Astronomy University of California, Irvine 916 Engineering Tower Irvine CA 92697 USA

Funding

National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Ministerio de Ciencia e Innovación · Generalitat de Catalunya

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