315 citations · 3.1k across the 59 of their papers we have counts for
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cond-mat.str-el2008★ 19 cited
Ferrotoroidic Moment as a Quantum Geometric Phase
C. D. Batista, G. Ortiz, A. A. Aligia
We present a geometric characterization of the ferrotoroidic moment in terms of a set of Abelian Berry phases. We also introduce a fundamental complex quantity which provides an al…
cond-mat.stat-mech2008★ 107 cited
Dynamical non-ergodic scaling in continuous finite-order quantum phase transitions
Shusa Deng, Gerardo Ortiz, Lorenza Viola
We investigate the emergence of universal dynamical scaling in quantum critical spin systems adiabatically driven out of equilibrium, with emphasis on quench dynamics which involve…
cond-mat.str-el2008★ 21 cited
Orbital order driven quantum criticality
Zohar Nussinov, Gerardo Ortiz
Charge, spin, and orbital degrees of freedom underlie the physics of transition metal compounds. Much work has revealed quantum critical points associated with spin and charge degr…