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

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [1];  [4];  [4];  [5];  [5];  [3];  [5]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Protochips Company, Morrisville, NC (United States)
  5. Nion Company, Kirkland, WA (United States)

Heat dissipation in integrated nanoscale devices is a major issue that requires the development of nanoscale temperature probes. In this paper, 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.

Research Organization:
Vanderbilt Univ., Nashville, TN (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; McMinn Endowment; USDOE
Grant/Contract Number:
FG02-09ER46554; AC02-05CH11231; AC05-00OR22725
OSTI ID:
1597878
Alternate ID(s):
OSTI ID: 1423505; OSTI ID: 1544311; OSTI ID: 1784204
Journal Information:
Physical Review Letters, Vol. 120, Issue 9; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 80 works
Citation information provided by
Web of Science

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Cited By (9)

Identification of site-specific isotopic labels by vibrational spectroscopy in the electron microscope journal January 2019
Measuring nanoscale thermal gradients in suspended MoS 2 with STEM-EELS journal October 2019
Measuring temperature-dependent thermal diffuse scattering using scanning transmission electron microscopy journal December 2018
Modeling ballistic phonon transport from a cylindrical electron beam heat source journal September 2019
Electron-beam spectroscopy for nanophotonics journal July 2019
Methods for Calibration of Specimen Temperature During In Situ Transmission Electron Microscopy Experiments journal January 2020
Vibrational spectroscopy at atomic resolution with electron impact scattering journal October 2019
Electron Beam Spectroscopy for Nanophotonics text January 2019
Time-of-flight electron energy loss spectroscopy by longitudinal phase space manipulation with microwave cavities journal September 2018