Physics
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phrva..57.3403k&link_type=abstract
Physical Review A (Atomic, Molecular, and Optical Physics), Volume 57, Issue 5, May 1998, pp.3403-3418
Physics
10
General Molecular Conformation And Symmetry, Stereochemistry, Self-Consistent-Field Methods, Excitons And Related Phenomena, Molecular And Chemical Processes And Interactions
Scientific paper
We investigate the hydrogen molecule in a strong parallel magnetic field using a fully numerical Hartree-Fock approach. We find that for magnetic fields below 4.2×104 T the ground state of H2 is the strongly bound singlet state 1Σg, for magnetic fields stronger than 3×106 T the ground state of the molecule is the strongly bound triplet 3Πu, and for magnetic fields between 4.2×104 T and 3×106 T the symmetry of the ground state is the triplet state 3Σu, which is characterized by repulsion at intermediate internuclear distances and by a weak quadrupole-quadrupole interaction between atoms at large internuclear separation. In this region of magnetic field strength the hydrogen molecule is bound weakly, if at all; the hydrogen atoms behave like a weakly nonideal gas of Bose particles and can form a superfluid phase predicted in earlier works [Korolev and Liberman, Phys. Rev. Lett. 72, 270 (1994)]. For magnetic fields between ~3×105 T and 3×106 T the triplet state 3Πu is found to be metastable. This state may be responsible for an unknown excitonic line observed experimentally [Timofeev and Chernenko, JETP Lett. 61, 617 (1995)].
Kravchenko Yu. P.
Liberman Michael A.
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