TY - JOUR
T1 - Hole burning spectroscopy and quantum phenomena in methyl groups
AU - Pinsker, M.
AU - Friedrich, J.
PY - 1996
Y1 - 1996
N2 - The rotational tunneling states of methyl groups are subject to severe symmetry restrictions which result, at sufficiently low temperatures, in extremely long lifetimes. Hence, these states can be used to store population and to do hole burning experiments. From the recovery of the holes the relaxation of the rotational tunneling levels can be measured. We performed experiments of this type with the probe molecule dimethyl-s-tetrazine in a series of n-alkane host materials. The methyl group turns out to be an extreme sensitive probe for the host lattice. Direct-, Roman- and Orbach-type rotational tunneling processes could be identified, with surprising details for the d-substituted rotor.
AB - The rotational tunneling states of methyl groups are subject to severe symmetry restrictions which result, at sufficiently low temperatures, in extremely long lifetimes. Hence, these states can be used to store population and to do hole burning experiments. From the recovery of the holes the relaxation of the rotational tunneling levels can be measured. We performed experiments of this type with the probe molecule dimethyl-s-tetrazine in a series of n-alkane host materials. The methyl group turns out to be an extreme sensitive probe for the host lattice. Direct-, Roman- and Orbach-type rotational tunneling processes could be identified, with surprising details for the d-substituted rotor.
UR - http://www.scopus.com/inward/record.url?scp=0030409169&partnerID=8YFLogxK
U2 - 10.1080/10587259608042736
DO - 10.1080/10587259608042736
M3 - Article
AN - SCOPUS:0030409169
SN - 1058-725X
VL - 291
SP - 97
EP - 102
JO - Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
ER -