Possible quadrupolar nematic phase in the frustrated spin chain <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>LiCuSbO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math> : An NMR investigation

The frustrated one-dimensional (1D) quantum magnet LiCuSbO_4is one rare realization of the J_1-J_2spin chain model with an easily accessible saturation field, formerly estimated to 12~T. Exotic multipolar nematic phases were theoretically predicted in such compounds just below the saturation field, but without unambiguous experimental observation so far. In this paper we present extensive experimental research of the compound in the wide...