扫描隧道显微镜下电子自旋共振原子尺度直接测温理论

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-02-02 DOI:10.1021/acs.nanolett.4c05018

Yelko del Castillo, Joaquín Fernández-Rossier

{"title":"扫描隧道显微镜下电子自旋共振原子尺度直接测温理论","authors":"Yelko del Castillo, Joaquín Fernández-Rossier","doi":"10.1021/acs.nanolett.4c05018","DOIUrl":null,"url":null,"abstract":"Knowledge of the occupation ratio and energy splitting of a two-level system provides a direct method for temperature readout. This principle was demonstrated for an individual two-level magnetic atom using Electron Spin Resonance via Scanning Tunneling Microscopy (ESR-STM). The temperature determination involves two steps: measuring the energy splitting with ESR-STM and determining the equilibrium occupation of a nearby atom using the peak height ratio in the ESR spectrum. Here we present a theory addressing three aspects: the impact of shot noise and back-action on thermometry precision, the role of spin geometry in enhancing signal-to-noise ratio, and the method’s capability to detect thermal gradients as small as 5 mK/nm. We predict ESR-STM thermometry achieves 10 mK resolution at around 1 K temperatures, offering new avenues for nanoscale thermal measurements.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"61 1","pages":""},"PeriodicalIF":9.1000,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Theory of Atomic-Scale Direct Thermometry Using Electron Spin Resonance via Scanning Tunneling Microscopy\",\"authors\":\"Yelko del Castillo, Joaquín Fernández-Rossier\",\"doi\":\"10.1021/acs.nanolett.4c05018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Knowledge of the occupation ratio and energy splitting of a two-level system provides a direct method for temperature readout. This principle was demonstrated for an individual two-level magnetic atom using Electron Spin Resonance via Scanning Tunneling Microscopy (ESR-STM). The temperature determination involves two steps: measuring the energy splitting with ESR-STM and determining the equilibrium occupation of a nearby atom using the peak height ratio in the ESR spectrum. Here we present a theory addressing three aspects: the impact of shot noise and back-action on thermometry precision, the role of spin geometry in enhancing signal-to-noise ratio, and the method’s capability to detect thermal gradients as small as 5 mK/nm. We predict ESR-STM thermometry achieves 10 mK resolution at around 1 K temperatures, offering new avenues for nanoscale thermal measurements.\",\"PeriodicalId\":53,\"journal\":{\"name\":\"Nano Letters\",\"volume\":\"61 1\",\"pages\":\"\"},\"PeriodicalIF\":9.1000,\"publicationDate\":\"2025-02-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1021/acs.nanolett.4c05018\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.nanolett.4c05018","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

了解两级系统的占用比和能量分裂为温度读出提供了直接的方法。利用电子自旋共振扫描隧道显微镜（ESR-STM）对单个二能级磁性原子证明了这一原理。温度的测定包括两个步骤：用ESR- stm测量能量分裂和利用ESR光谱中的峰高比确定附近原子的平衡占据。在这里，我们提出了一个解决三个方面的理论：弹丸噪声和反作用对测温精度的影响，自旋几何形状在提高信噪比中的作用，以及该方法检测小至5 mK/nm的热梯度的能力。我们预测ESR-STM测温在1 K左右的温度下可以达到10 mK的分辨率，为纳米级热测量提供了新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Theory of Atomic-Scale Direct Thermometry Using Electron Spin Resonance via Scanning Tunneling Microscopy

查看原文本刊更多论文

Theory of Atomic-Scale Direct Thermometry Using Electron Spin Resonance via Scanning Tunneling Microscopy

Knowledge of the occupation ratio and energy splitting of a two-level system provides a direct method for temperature readout. This principle was demonstrated for an individual two-level magnetic atom using Electron Spin Resonance via Scanning Tunneling Microscopy (ESR-STM). The temperature determination involves two steps: measuring the energy splitting with ESR-STM and determining the equilibrium occupation of a nearby atom using the peak height ratio in the ESR spectrum. Here we present a theory addressing three aspects: the impact of shot noise and back-action on thermometry precision, the role of spin geometry in enhancing signal-to-noise ratio, and the method’s capability to detect thermal gradients as small as 5 mK/nm. We predict ESR-STM thermometry achieves 10 mK resolution at around 1 K temperatures, offering new avenues for nanoscale thermal measurements.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

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.