Soft Spin Wave near ν = 1 : Evidence for a Magnetic Instability in Skyrmion Systems
作者： Yann Gallais , Jun Yan , Aron Pinczuk , Loren N. Pfeiffer , Ken W. West
DOI: 10.1103/PHYSREVLETT.100.086806
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摘要: The ground state of the two-dimensional electron gas near nu=1 is investigated by inelastic light scattering measurements carried down to very low temperatures. Away from nu=1, ferromagnetic spin wave collapses and a new low-energy emerges below Zeeman gap. emergent shows soft behavior as its energy increases with temperature reaches for temperatures above 2 K. observed softening indicates an instability towards magnetic order that breaks rotational symmetry. We discuss our findings in possible existence Skyrme crystal.
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