靠近Mott过渡的金属中的弹丸噪声

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-12-09 DOI:10.1021/acs.nanolett.4c02521

Yiou Zhang, Shashi Pandey, Sergei Ivanov, Jian Liu, Sergei Urazhdin

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引用次数: 0

摘要

SrIrO3是一种金属复合物氧化物，具有不同寻常的电子和磁性能，据信源于电子相关性，因为它接近莫特金属-绝缘体转变。然而，其电子态的性质和金属传导的机制仍然知之甚少。我们证明了纳米级SrIrO3结产生的散粒噪声被强烈抑制，与扩散准粒子输运不一致。对热效应和结长尺度的分析表明，传导是由电子的集体跳变介导的。我们的研究结果提供了对接近莫特跃迁的非费米液态的深入了解，并推进了弹丸噪声测量作为量子材料研究的一种强大技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Shot Noise in a Metal Close to the Mott Transition

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Shot Noise in a Metal Close to the Mott Transition

SrIrO₃ is a metallic complex oxide with unusual electronic and magnetic properties believed to originate from electron correlations due to its proximity to the Mott metal–insulator transition. However, the nature of its electronic state and the mechanism of metallic conduction remain poorly understood. We demonstrate that the shot noise produced by nanoscale SrIrO₃ junctions is strongly suppressed, inconsistent with diffusive quasiparticle transport. Analysis of thermal effects and scaling with the junction length reveals that conduction is mediated by collective hopping of electrons almost localized by correlations. Our results provide insight into the non-Fermi liquid state close to the Mott transition and advance shot noise measurements as a powerful technique for the study of quantum materials.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.