BIASED DIFFUSION AND PAIRING OF IMPURITIES IN QUANTUM CRYSTALS

Authors
MEYEROVICH AE NIGHTINGALE MP TAMMARO M
Citation
Ae. Meyerovich et al., BIASED DIFFUSION AND PAIRING OF IMPURITIES IN QUANTUM CRYSTALS, Physica. B, Condensed matter, 194, 1994, pp. 925-926
Citations number
10
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
1
Pages
925 - 926
Database
ISI
SICI code
0921-4526(1994)194:<925:BDAPOI>2.0.ZU;2-T
Abstract
We calculated the time of pairing of ortho-H-2 impurities in solid par a-H-2. The quantum diffusion has a strong directional bias which at mo derate temperatures is against a mutual approach of particles and crea tes a ''kinetic barrier.'' At lower temperatures, this barrier freezes out causing a rapid increase in pairing rates. This explains a well-d eveloped maximum in the pairing time as a function of temperature.