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Title: Temperature Measurement by a Nanoscale Electron Probe Using Energy Gain and Loss Spectroscopy

Abstract

Heat dissipation in integrated nanoscale devices is a major issue that requires the development of nanoscale temperature probes. Here, we report the implementation of a method that combines electron energy gain and loss spectroscopy to provide a direct measurement of the local temperature in the nanoenvironment. Loss and gain peaks corresponding to an optical-phonon mode in boron nitride were measured from room temperature to ∼ 1600     K . Both loss and gain peaks exhibit a shift towards lower energies as the sample is heated up. First-principles calculations of the temperature-induced phonon frequency shifts provide insights into the origin of this effect and confirm the experimental data. The experiments and theory presented here open the doors to the study of anharmonic effects in materials by directly probing phonons in the electron microscope.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE
OSTI Identifier:
1544311
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 9; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

Citation Formats

Idrobo, Juan Carlos, Lupini, Andrew R., Feng, Tianli, Unocic, Raymond R., Walden, Franklin S., Gardiner, Daniel S., Lovejoy, Tracy C., Dellby, Niklas, Pantelides, Sokrates T., and Krivanek, Ondrej L. Temperature Measurement by a Nanoscale Electron Probe Using Energy Gain and Loss Spectroscopy. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.095901.
Idrobo, Juan Carlos, Lupini, Andrew R., Feng, Tianli, Unocic, Raymond R., Walden, Franklin S., Gardiner, Daniel S., Lovejoy, Tracy C., Dellby, Niklas, Pantelides, Sokrates T., & Krivanek, Ondrej L. Temperature Measurement by a Nanoscale Electron Probe Using Energy Gain and Loss Spectroscopy. United States. doi:10.1103/PhysRevLett.120.095901.
Idrobo, Juan Carlos, Lupini, Andrew R., Feng, Tianli, Unocic, Raymond R., Walden, Franklin S., Gardiner, Daniel S., Lovejoy, Tracy C., Dellby, Niklas, Pantelides, Sokrates T., and Krivanek, Ondrej L. Thu . "Temperature Measurement by a Nanoscale Electron Probe Using Energy Gain and Loss Spectroscopy". United States. doi:10.1103/PhysRevLett.120.095901.
@article{osti_1544311,
title = {Temperature Measurement by a Nanoscale Electron Probe Using Energy Gain and Loss Spectroscopy},
author = {Idrobo, Juan Carlos and Lupini, Andrew R. and Feng, Tianli and Unocic, Raymond R. and Walden, Franklin S. and Gardiner, Daniel S. and Lovejoy, Tracy C. and Dellby, Niklas and Pantelides, Sokrates T. and Krivanek, Ondrej L.},
abstractNote = {Heat dissipation in integrated nanoscale devices is a major issue that requires the development of nanoscale temperature probes. Here, we report the implementation of a method that combines electron energy gain and loss spectroscopy to provide a direct measurement of the local temperature in the nanoenvironment. Loss and gain peaks corresponding to an optical-phonon mode in boron nitride were measured from room temperature to ∼ 1600     K . Both loss and gain peaks exhibit a shift towards lower energies as the sample is heated up. First-principles calculations of the temperature-induced phonon frequency shifts provide insights into the origin of this effect and confirm the experimental data. The experiments and theory presented here open the doors to the study of anharmonic effects in materials by directly probing phonons in the electron microscope.},
doi = {10.1103/PhysRevLett.120.095901},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 9,
volume = 120,
place = {United States},
year = {2018},
month = {3}
}

Works referenced in this record:

Ab initiomolecular dynamics for liquid metals
journal, January 1993


Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996


Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set
journal, July 1996