Skip to Content

W60: Shastry-Sutherland and Quasi 1 D Systems

Room 419

Sponsoring Units: GMAGChair: Lucas Pressley, Johns Hopkins UniversitySession Type:
  • Focus

Thu. March 9, 5:12 p.m. – 5:24 p.m. PST

Room 419

Fractionalized quasi-particles of the Heisenberg spin-1/2 chain have been extensively probed by inelastic neutron scattering, electron spin, and nuclear magnetic resonances and other dynamical probes in the past. Here we present a theoretical analysis of the spinon spin current between the Heisenberg spin-1/2 chain and nonmagnetic conductor in the presence of the external magnetic field. We find that the residual backscattering interaction between spinons controls the low-temperature spinon current. Specifically, the current vanishes when the spin chain is tuned, by varying exchange interaction between the next-nearest spins, to the non-interacting spinon point. Our approximate analytical calculations are well supported by numerical results based on matrix-product-state techniques.

Presented By

  • Ren-Bo Wang (Département de Physique, Université de Montréal)


  • Oleg A Starykh (University of Utah)
  • Anna Keselman (Physics Department, Technion)
  • Ren-Bo Wang (Département de Physique, Université de Montréal)
  • Leon Balents (University of California, Santa Barbara)