Novel magneto-electric order parameter in cupric oxide.
In condensed matter systems, the atoms, electrons or spins can sometimes arrange themselves in ways that result in unexpected properties but that cannot be detected by conventional experimental probes. Several historical and contemporary examples of such hidden orders are known and more are awaiting discovery, perhaps in the form of more complex composite orders. The aim of this proposal, is to study a new type of order parameter in CuO, which arises from spontaneous long-range ordered arrangement of local magneto-electric moments. We propose to detect these ordered moments by measuring full polarization matrices with spherical neutron polarimetry. With the strong support from theoretical and computational predictions, the identification of this new type of order, may herald a new way to classify condensed matter systems.
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JIAN-RUI SOH; BOOTHROYD Andrew Timothy; PRABHAKARAN Dharmalingam; QURESHI Navid; RODRIGUEZ VELAMAZAN Jose Alberto; Henrik M. Ronnow; SPALDIN Nicola and STUNAULT Anne. (2021). Novel magneto-electric order parameter in cupric oxide.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-41-1172
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