[LA-SiGMA] Seminar at LSU, Dr. Liusuo Wu, Stony Brook University, Wednesday January 28, 3:30 p.m.

[Bety Rodriguez-Milla]

Dear All,

The Louisiana Consortium for Neutron Scattering (LaCNS) has invited Dr. Liusuo Wu, postdoctoral associate in experimental condensed matter in Meigan Aronson’s group at Stony Brook University. 

He will give the talk "Spinon excitations in one dimensional magnet Yb2Pt2Pb” on Wednesday January 28 at 3:30 p.m. at LSU, room 1008B at the DMC. This talk will be broadcast at all LA-SiGMA sites via HD videoconferencing.

Abstract:
Emergent fractional excitations in low dimensional magnets have attracted great interest in condensed matter physics. Many studies have focused on Heisenberg spin 1/2 systems, where quantum fluctuations are expected to be strongest. Here I will present measurements on a new low dimensional magnet Yb2Pt2Pb, where fractional, quantum spinon excitations are realized from one dimensional ladders with classical Yb Ising moments. Both elastic and inelastic neutron scattering data on Yb2Pt2Pb single crystals will be presented. In contrast to 1D Heisenberg spin 1/2 chains, the broad continuum of excitations observed in Yb2Pt2Pb is extended to much higher energies, indicating four spinon excitations are important in this system.

The talk is also available at
UNO - 234 Liberal Arts Building
LATech - 122 Nethken Hall
SUBR - 211 J.B. Moore Hall
Tulane - 600 Lindy Boggs
Xavier - 226 Qatar Pavilion

Regards,

-Bety