Applications of Electron-Positron Correlation-Polarization Potential Method to Positron Binding in Glycine Conformers

Abstract:

In this paper, we present a theoretical investigation of positron binding properties for glycine conformers.The glycine molecule has eight lowest-energy conformers with different steric arrangements,which are characterized by the different permanent dipole moments.We applied the electron-positron correlation-polarization potential method to calculate positron binding energies for the positron-molecule compounds. Our results show that all examined conformational equilibrium structures can form the positronic bound states, and these positron binding energies increase with increasing molecular dipole moments. The global minimum structure, which has the smallest dipole moment, exhibits the lowest positron binding energy. In contrast, the next lowest-energy conformer, despite also having a small dipole moment, exhibits the largest positron binding energy and consequently becomes the lowest-energy state of the positron-glycine complex.

• Periodical: Solid State Phenomena (Volume 374)
• Pages: 55-62
• DOI: https://doi.org/10.4028/p-7AQq93
• Online since: July 2025
• Authors: Daisuke Yoshida*, Makito Takagi, Toshiyuki Takayanagi, Masanori Tachikawa
• Keywords: Electron-Positron Correlation-Polarization Potential, Positron-Molecule Complex, Theoretical Calculation

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