675 citations · 3.2k across the 30 of their papers we have counts for
Showing 2004 · physics.atom-phShow all
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physics.atom-ph2004★ 3 cited
Comparison of two single-ion optical frequency standards at the sub-Hertz level
Chr. Tamm, T. Schneider, E. Peik
We describe experimental investigations on an optical frequency standard based on a laser cooled 171Yb+ ion confined in a radiofrequency Paul trap. The electric-quadrupole transiti…
physics.atom-ph2004★ 282 cited
New limit on the present temporal variation of the fine structure constant
E. Peik, B. Lipphardt, H. Schnatz +3
The comparison of different atomic transition frequencies over time can be used to determine the present value of the temporal derivative of the fine structure constant alpha in a…