Electric field response in a three dimensional U(1) Quantum spin liquid
by Prof. Subhro Bhattacharjee (ICTS TIFR, Bengaluru)
Thursday, August 17, 2017 from to (Asia/Kolkata)
at A 304
at A 304
A three dimensional U(1) quantum spin liquid, at low energies, is described by an emergent electrodynamics and supports a gapless “photon” mode. I shall discuss the coupling between conventional (Maxwell) and the above emergent electrodynamics in such a U(1) QSL–the quantum spin Ice. In particular, I shall discuss the effect of an external electric field in such a system and show that such an external electric field can– (1) lead to experimentally measurable signatures for the dynamics spin-structure factor characteristic to QSL, and (2) can lead to unconventional quantum phase transitions between different U(1) spin liquids. The understanding of above unconventional charge response form can be of importance in characterising the unconventional magnetic properties of rare-earth pyrochlore oxides which may harbour the above QSL phases.