Magnetic field effects in an octupolar quantum spin liquid candidate

Quantum spin liquid (QSL) is a disordered state of quantum-mechanically entangled spins commonly arising from frustrated magnetic dipolar interactions. However, QSL in some pyrochlore magnets can also come octupolar Although the key signature for both and interaction-driven presence excitation continuum (spinons) quantum number fractionalization, an external field-induced ferromagnetic order will transform spinons into conventional waves QSL. By contrast, octupole QSL, carry moments that do not couple, leading order, to field or neutron but contribute dependence heat capacity. Here we use scattering show application large Ce2Zr2O7, candidate, induces Anderson-Higgs transition by condensing static ordered with invisible neutrons contributing Our theoretical calculations provide microscopic, qualitative understanding at wavevectors Ce2Sn2O7 pyrochlore, its absence Ce2Zr2O7. Therefore, our results identify Ce2Zr2O7 as strong candidate U (1) establishing interactions are responsible properties Ce-based magnets.