Abstract

Mössbauer-effect and microwave absorption experimental evidence unambiguously demonstrates the presence of slow, ~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 Å. 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.

Department(s)

Chemistry

Sponsor(s)

National Science Foundation (U.S.)
United States. Department of Energy

Keywords and Phrases

Eu8Ga16Ge30; Mössbauer-Effect; Microwave Absorption; Stoichiometric Clathrate

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2006 American Physical Society (APS), All rights reserved.

Full Text Link

Included in

Chemistry Commons

Share

 
COinS