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Title: Characterization of nanoscale temperature fields during electromigration of nanowires

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep04975· OSTI ID:1624713
 [1];  [1];  [1];  [1];  [2]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Mechanical Engineering
  2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Mechanical Engineering; Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering

Quantitative studies of nanoscale heat dissipation (Joule heating) are essential for advancing nano-science and technology. Joule heating is widely expected to play a critical role in accelerating electromigration induced device failure. However, limitations in quantitatively probing temperature fields—with nanoscale resolution—have hindered elucidation of the role of Joule heating in electromigration. In this work, we use ultra-high vacuum scanning thermal microscopy to directly quantify thermal fields in nanowires during electromigration. Our results unambiguously illustrate that electromigration begins at temperatures significantly lower than the melting temperature of gold. Further, we show that during electromigration voids predominantly accumulate at the cathode resulting in both local hot spots and asymmetric temperature distributions. These results provide novel insights into the microscopic details of hot spot evolution during electromigration and are expected to guide the design of reliable nanoscale functional devices.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0004871
OSTI ID:
1624713
Journal Information:
Scientific Reports, Vol. 4, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

A Review on Principles and Applications of Scanning Thermal Microscopy (SThM) journal September 2019
Nanoscale Thermal Transport in 2D Nanostructures from Cryogenic to Room Temperature journal August 2019
Temperature mapping of operating nanoscale devices by scanning probe thermometry journal March 2016
Electrostatic control of thermoelectricity in molecular junctions journal October 2014
Fabrication of atomic junctions with experimental parameters optimized using ground-state searches of Ising spin computing journal November 2019
AFM-thermoreflectance for simultaneous measurements of the topography and temperature journal January 2018
Nanoscale thermometry by scanning thermal microscopy journal July 2016
Perspective: Thermal and thermoelectric transport in molecular junctions journal March 2017
Nanoscale thermal analysis for heat-assisted magnetic recording journal October 2017
Thermoreflectance imaging of electromigration evolution in asymmetric aluminum constrictions journal January 2018
Scanning Probe Microscopy for Thermal Transport Measurements journal October 2015
Understanding the mechanisms leading to failure in metallic nanowire-based transparent heaters, and solution for stability enhancement journal December 2016
Critical temperature in feedback-controlled electromigration of gold nanostructures journal October 2018
Structural transitions in electron beam deposited Co–carbonyl suspended nanowires at high electrical current densities journal January 2015
Nanoscale Thermometry by Scanning Thermal Microscopy text January 2018
Temperature mapping of operating nanoscale devices by scanning probe thermometry text January 2016

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