Talk Title: Probing Emergent Particles and Fields in Quantum Spin Liquids In this talk, we shall introduce quantum spin liquids as emergent
phenomena in Mott insulators. Novel charge neutral, spin 1/2, mobile particles
emerge at low energy scale in quantum spin liquids, which are so called
spinons. Usually, spinons are accompanied with gauge fields. But all these new
particles and fields are totally absent in the Hamiltonian that describes the
initial systems. Then we propose to use ultrasonic attenuation to measure the
spinon mass and lifetime. Furthermore, transverse ultrasonic attenuation is a direct
probe of the onset of pairing and may reveal the existence of the U(1) gauge
field. Click to download: Presentation File |