Criticality in Frustrated Quantum Antiferromagnets
نویسنده
چکیده
Insulating antiferromagnets offer a rich playground to explore novel quantum phases of matter. Triangular lattice s=1/2 antiferromagnets are of especial interest due to their reduced dimensionality, low spin, and frustrating interactions which all conspire to disrupt magnetic order, as found experimentally in several instances. The resulting “quantum disordered” phases are expected to have novel properties. In the easy plane antiferromagnet, I will argue for the existence of an exotic quantum “critical” phase with gapless spin excitations yet no broken symmetries, and discuss its experimental implications..
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