Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 72: Correlated Electrons: Frustrated Magnets - General 2

TT 72.12: Vortrag

Donnerstag, 23. März 2017, 18:00–18:15, HSZ 204

Spin liquid and quantum phase transition without symmetry breaking in a frustrated three-dimensional Ising model — •Kai Phillip Schmidt¹, Julia Roechner², and Leon Balents³ — ¹FAU Erlangen-Nürnberg, Erlangen, Germany — ²TU Dortmund, Dortmund, Germany — ³Kavli Institute for Theoretical Physics, University of California, Santa Barbara, USA

We show that the highly frustrated transverse-field Ising model on the three-dimensional pyrochlore lattice realizes a first-order phase transition without symmetry breaking between the low-field Coulomb quantum spin liquid and the high-field polarized phase. The quantum phase transition is located quantitively by comparing low- and high-field series expansions. Furthermore, the intriguing properties of the elementary excitations in the polarized phase are investigated. We argue that this model can be achieved experimentally by applying mechanical strain to a classical spin ice material comprised of non-Kramers spins such as Ho₂Ti₂O₇. Taken together with our results, this provides a new experimental platform to study quantum spin liquid physics.