• Electron-electron interactions in the chemical bond: “1/3” Effect in the bond length of hydrogen molecule

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      https://www.ias.ac.in/article/fulltext/jcsc/113/05-06/0415-0425

    • Keywords

       

      Electron-electron interactions; quantum Hall effect; hydrogen-molecule bond length

    • Abstract

       

      The prominent “1/3” effect observed in the Hall effect plateaus of two-dimensional electron gas (2DEG) systems has been postulated to indicating 1/3 fractional charge quasiparticle excitations arising from electron-electron interactions. Tunneling shot-noise experiments on 2DEF exhibiting fractional quantum Hall effect (FQHE) shows evidence for tunnelling of particles with eand e/3 charges for a constant band mass. A “1/3” effect in the hydrogen molecule is seen in as much as its internuclear distance,dH-H = D + D+, with ¦D+/D¦ = 1/3. This is examined in terms of electron-electron interactions involving electron-and hole quasiparticles, (e-)and(h+), equivalent to those observed in FQHE shot -noise experiments. The(e/m) ratio of the (e) and(h+) quasiparticles is kept at 1: −3. Instead of a 2DEG, these particles are treated as being in flat Bohr orbits. A treatment in the language of charge-flux tube composites for the hydrogen atom as well as the hydrogen molecule is attempted. Such treatment gives important insights into changes in chemical potential and bond energy on crossing a phase boundary during the atom-bond transition as well as on models for FQHE itself.

    • Author Affiliations

       

      P Ganguly1

      1. Physical and Materials Chemistry Division, National Chemical Laboratory, Pashan Road, Pune - 411 008, India
    • Dates

       
  • Journal of Chemical Sciences | News

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