Magnetic and electric dipole moments of the $H{}^3{\Delta }_1$ state in ThO

Abstract

The metastable $H{}^3{\Delta }_1$ state in the thorium monoxide (ThO) molecule is highly sensitive to the presence of a CP-violating permanent electric dipole moment of the electron (eEDM). The magnetic dipole moment ${\mu }_H$ and the molecule-fixed electric dipole moment $D_H$ of this state are measured in preparation for a search for the eEDM. The small magnetic moment ${\mu }_H=8.5(5)\times 10^{-3}{\mu }_B$ displays the predicted cancellation of spin and orbital contributions in a ${}^3{\Delta }_1$ paramagnetic molecular state, providing a significant advantage for the suppression of magnetic field noise and related systematic effects in the eEDM search. In addition, the induced electric dipole moment is shown to be fully saturated in very modest electric fields ($<$ 10 V/cm). This feature is favorable for the suppression of many other potential systematic errors in the ThO eEDM search experiment.

arXiv comment4 pages, 3 figures

References in corpus (4)

• Candidate molecular ions for an electron electric dipole moment experiment
• Search for the electric dipole moment of the electron with thorium monoxide
• Proof of principle for a high sensitivity search for the electric dipole moment of the electron using the metastable a(1)[^3Σ^+] state of PbO
• Preparation and detection of states with simultaneous spin alignment and molecular orientation in PbO

Cited by in corpus (23)

• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Stimulated Raman adiabatic passage in physics, chemistry and beyond
• Manipulation of Molecules with Electromagnetic Fields
• Combined 4-component and relativistic pseudopotential study of ThO for the electron electric dipole moment search
• Parity and Time-Reversal Violation in Atomic Systems
• Theoretical study of ThO for the electron electric dipole moment search
• Theoretical study of thorium monoxide for the electron electric dipole moment search, II: Electronic properties of $H^3{\Delta }_1$ in ThO
• Electron Electric Dipole Moment and Hyperfine Interaction Constants for ThO
• Methods, Analysis, and the Treatment of Systematic Errors for the Electron Electric Dipole Moment Search in Thorium Monoxide
• Search for the electron electric dipole moment using $\Omega$-doublet levels in PbO${}^{\ast }$
• Zeeman interaction in ThO $H^3{\Delta }_1$ for the electron EDM search
• The metastable Q ${}^3{\Delta }_2$ state of ThO: A new resource for the ACME electron EDM search
• TaN, a molecular system for probing $\mathcal{P},\mathcal{T}$-violating hadron physics
• Shot-noise-limited spin measurements in a pulsed molecular beam
• Suppression of the optical crosstalk in a multi-channel silicon photomultiplier array
• Theoretical molecular spectroscopy of actinide compounds: The ThO molecule
• Advanced Cold Molecule Electron EDM
• The Rabi frequency on the $H^3{\Delta }_1$ to $C^1\Pi$ transition in ThO: influence of interaction with electric and magnetic fields
• Orientation and Alignment Dynamics of Polar Molecule Driven by Shaped Laser Pulses
• Directional properties of polar paramagnetic molecules subject to congruent electric, magnetic and optical fields
• Spin Waves and Dielectric Softening of Polar Molecule Condensates
• Two-state Bogoliubov theory of a molecular Bose gas
• Nuclear Electric Quadrupole Moment-Induced Parity Doubling in Molecules for Symmetry-Violation Searches