Parity-forbidden excitations of Sr2CuO2Cl2 revealed by optical third-harmonic spectroscopy

A. B. Schumacher, J. S. Dodge, M. A. Carnahan, R. A. Kaindl, D. S. Chemla, L. L. Miller

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


The symmetry and spectrum of both even and odd-parity states near the charge-transfer gap of Sr2CuO2Cl2 were taken into account using nonlinear optical spectroscopy. Polarization analysis of the nonlinear optical response provided evidence for an even-parity state at 2 eV, with a1g symmetry, and allowed to estimate the magnitude of the dipole matrix element that couples this excitation to the CT exciton.

Original languageEnglish (US)
Article number127006
Pages (from-to)127006/1-127006/4
JournalPhysical Review Letters
Issue number12
StatePublished - Sep 17 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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