Indications of a T = 0 Quantum Phase Transition in SrTiO3

Daniel E. Grupp; Allen M. Goldman

doi:10.1103/PhysRevLett.78.3511

Indications of a T = 0 Quantum Phase Transition in SrTiO₃

Daniel E. Grupp, Allen M. Goldman

Materials Research Science & Engineering Center

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22 Scopus citations

Abstract

We have been investigating the effects of electric fields on SrTiO₃ for temperatures in the range from 1.6 to 50 K. Measurements of the electric-field-induced strain show a clear signature with increasing field of a crossover from electrostrictive to piezoelectric behavior. The strain versus voltage data scale to a single curve, which we interpret as evidence for a T = 0 quantum phase transition. The coefficient of electrostriction appears to diverge as T → 0, further suggestive of a T = 0 phase transition.

Original language	English (US)
Pages (from-to)	3511-3514
Number of pages	4
Journal	Physical review letters
Volume	78
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.78.3511
State	Published - May 5 1997

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