most citedDirect observation of the Higgs amplitude mode in a two-dimensional quantum antiferromagnet near the quantum critical point

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cond-mat.str-el2017★ 52 cited

Direct observation of the Higgs amplitude mode in a two-dimensional quantum antiferromagnet near the quantum critical point

Tao Hong, Masashige Matsumoto, Yiming Qiu +12

Spontaneous symmetry-breaking quantum phase transitions play an essential role in condensed matter physics. The collective excitations in the broken-symmetry phase near the quantum…