Article (Scientific journals)
Direct experimental evidence for atomic tunneling of europium in crystalline Eu8Ga16Ge30
Hermann, Raphaël; Keppens, Veerle; Bonville, Pierre et al.
2006In Physical Review Letters, 97 (1)
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Abstract :
[en] Mossbauer-effect and microwave absorption experimental evidence unambiguously demonstrates the presence of slow, similar to 450 MHz, tunneling of magnetic europium between four equivalent sites in Eu8Ga16Ge30, a stoichiometric clathrate. Remarkably, six of the eight europium atoms, or 11% of the constituents in this solid, tunnel between these four sites separated by 0.55 angstrom. The off centering of the atoms or ions in crystalline clathrates appears to be a promising route for producing Rabi oscillators in solid-state materials.
Disciplines :
Physics
Author, co-author :
Hermann, Raphaël ;  Université de Liège - ULiège > Département de physique > Département de physique
Keppens, Veerle
Bonville, Pierre
Nolas, George S
Grandjean, Fernande ;  Université de Liège - ULiège > Département de physique > Département de physique
Long, Gary J
Christen, Hans M
Chakoumakos, Bryan C
Sales, Brian C
Mandrus, David
Language :
English
Title :
Direct experimental evidence for atomic tunneling of europium in crystalline Eu8Ga16Ge30
Publication date :
2006
Journal title :
Physical Review Letters
ISSN :
0031-9007
eISSN :
1079-7114
Publisher :
American Physical Society, Ridge, United States - New York
Volume :
97
Issue :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 13 December 2012

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