Research Article

Multilevel Tunnelling Systems and Fractal Clustering in the Low-Temperature Mixed Alkali-Silicate Glasses

Figure 5

Variation within the magnetic Aharonov-Bohm phase of the energy spectrum (units ) for a choice of , and   with . In this work, we are interested in the limit of this spectrum, which can be treated, at low- , as that of an effective 2LS.
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