Multiple Magnetic Bilayers and Unconventional Criticality without Frustration in BaCuSi${}_2$O${}_6$

S. Allenspach, A. Biffin, U. Stuhr +9

The dimerized quantum magnet BaCuSi${}_2$O${}_6$ was proposed as an example of "dimensional reduction" arising near the magnetic-field-induced quantum critical point (QCP) due to perfe…