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Three-Dimensional Nuclear Spin Positioning Using Coherent Radio-Frequency Control.

J Zopes1, K Herb1, K S Cujia1

  • 1Department of Physics, ETH Zurich, Otto Stern Weg 1, 8093 Zurich, Switzerland.

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|November 10, 2018
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Summary
This summary is machine-generated.

This study introduces a new nuclear magnetic resonance (NMR) method to determine the 3D positions of nuclear spins. This breakthrough enables nanoscale NMR for atomic-resolution imaging of single molecules.

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Area of Science:

  • Quantum physics and spectroscopy
  • Materials science and nanotechnology
  • Chemical physics

Background:

  • Nuclear magnetic resonance (NMR) is crucial for molecular structure determination.
  • Current NMR methods using dipolar interactions only provide distance (r) and polar angle (θ) information between spins.
  • Determining the full 3D position, including the azimuth angle (ϕ), is essential for advanced nanoscale NMR.

Purpose of the Study:

  • To develop a novel NMR protocol for retrieving the azimuth angle (ϕ) between nuclear spins.
  • To enable precise three-dimensional positioning of nuclear spins relative to a central electronic spin.
  • To advance nanoscale NMR techniques for atomic-resolution imaging of single molecules.

Main Methods:

  • Utilizing the dipolar interaction in nuclear magnetic resonance (NMR).
  • Measuring the nuclear precession phase after applying a calibrated external radio-frequency coil control pulse.
  • Experimentally demonstrating the method using individual 13C nuclear spins in a diamond host crystal.

Main Results:

  • Successfully retrieved the azimuth angle (ϕ) in addition to distance (r) and polar angle (θ).
  • Achieved precise three-dimensional positioning of 13C nuclear spins relative to a nitrogen-vacancy center's electronic spin.
  • Demonstrated the capability for nanoscale NMR with atomic resolution.

Conclusions:

  • The developed NMR protocol allows for complete 3D nuclear spin positioning.
  • This technique is a significant step towards realizing single-molecule imaging with atomic resolution.
  • The method has broad implications for nanoscale sensing and materials characterization.