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Related Experiment Video

Updated: Feb 4, 2026

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Published on: July 3, 2021

Electronic noise due to temperature differences in atomic-scale junctions.

Ofir Shein Lumbroso¹, Lena Simine^2,3, Abraham Nitzan^4,5

¹Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, Israel.

|October 12, 2018

Summary

This summary is machine-generated.

Researchers discovered a new electronic noise,

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Area of Science:

Condensed matter physics
Nanotechnology
Quantum electronics

Background:

Electronic thermal noise and shot noise are fundamental.
These noise types are crucial for quantum studies but problematic for signal detection.
Shot noise is typically voltage-activated.

Purpose of the Study:

To report the discovery and characterization of a novel electronic noise.
To investigate its origin and distinguish it from existing noise types.
To explore its potential applications in nanoscale thermal transport and electronics.

Main Methods:

Experimental measurements in atomic and molecular junctions.
Theoretical analysis using the Landauer formalism.
Distinguishing noise characteristics based on origin and activation stimuli.

Main Results:

Demonstrated a new noise, 'delta-T noise', generated by temperature differences.
Showed delta-T noise is thermally originated but requires non-equilibrium conditions.
Confirmed delta-T noise is distinct from thermal and voltage-activated shot noise.
Identified a shared partition origin between delta-T noise and standard shot noise.

Conclusions:

Delta-T noise offers a new method to detect temperature gradients in nanoscale conductors.
Combined with thermal noise, it can facilitate nanoscale heat transport studies.
Understanding delta-T noise is crucial for designing efficient quantum-limit nanoscale electronics.