Searching for an Exotic Spin-Dependent Interaction between Electrons at the Nanometer Scale with Molecular Rulers

Abstract

We propose that a type of molecular rulers, which contains two electron spins with precisely adjustable distance by varying the length of the shape-persistent polymer chains, can be utilized to constrain the axial-vector mediated interaction between electron spins at the nanometer scale. With measurements of the coupling strengths between two electron spins within different molecular rulers, an improved laboratory bound of exotic dipole-dipole interaction between electrons is established within the force range from 3 to 220 nm. The upper bound of the coupling $g_A^e{g}_A^e/4\pi \hslash c$ at 200 nm is $|g_A^e{g}_A^e/4\pi \hslash c|\le 4.9\times 10^{-13}$, which is about 20 times more stringent than previous limits.

References in corpus (10)

• Search for New Physics with Atoms and Molecules
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• Measurement of the magnetic interaction between two electrons
• Constraints on exotic spin-dependent interactions between electrons from helium fine-structure spectroscopy
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• Constraints on exotic dipole-dipole couplings between electrons at the micrometer scale
• Prospects for electron spin-dependent short-range force experiments with rare earth iron garnet test masses
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Cited by in corpus (5)

• Spin-dependent exotic interactions
• Experimental Constraint on an Exotic Parity-Odd Spin- and Velocity-Dependent Interaction with a Single Electron Spin Quantum Sensor
• Ferromagnetic Gyroscopes for Tests of Fundamental Physics
• Pseudovector and pseudoscalar spin-dependent interactions in atoms
• A strong broadband 21 cm cosmological signal from dark matter spin-flip interactions