%0 Journal Article %1 McQueeney1999 %A McQueeney, R. J. %A Petrov, Y. %A Egami, T. %A Yethiraj, M. %A Shirane, G. %A Endoh, Y. %D 1999 %I American Physical Society %J Phys. Rev. Lett. %K imported %N 3 %P 628--631 %R 10.1103/PhysRevLett.82.628 %T Anomalous Dispersion of LO Phonons in $La1.85Sr0.15CuO4$ at Low Temperatures %V 82 %X Inelastic neutron scattering measurements of La1.85Sr0.15CuO4 show that a discontinuity in dispersion develops in the middle of the highest energy LO phonon branch at low temperatures. The result suggests dynamic short range unit cell doubling in the CuO2 plane along the direction of the Cu-O bond, such as charge ordering on every other row of oxygen. Such charge ordering is related to, but is different from, the stripe charge ordering observed for nonsuperconducting cuprates.

@article{McQueeney1999, abstract = {Inelastic neutron scattering measurements of La1.85Sr0.15CuO4 show that a discontinuity in dispersion develops in the middle of the highest energy LO phonon branch at low temperatures. The result suggests dynamic short range unit cell doubling in the CuO2 plane along the direction of the Cu-O bond, such as charge ordering on every other row of oxygen. Such charge ordering is related to, but is different from, the stripe charge ordering observed for nonsuperconducting cuprates.}, added-at = {2010-11-06T00:14:39.000+0100}, author = {McQueeney, R. J. and Petrov, Y. and Egami, T. and Yethiraj, M. and Shirane, G. and Endoh, Y.}, biburl = {https://www.bibsonomy.org/bibtex/25a136be6fa01eb7229f09af555c06a35/nplumb}, doi = {10.1103/PhysRevLett.82.628}, file = {:C\:\\Users\\Nick\\Documents\\Papers\\McQueeney et al. - Anomalous dispersion of LO phonons in LSCO at low temperatures.pdf:PDF}, interhash = {4940b6d4317fcf07a097076c9294fefa}, intrahash = {5a136be6fa01eb7229f09af555c06a35}, journal = {Phys. Rev. Lett.}, keywords = {imported}, month = Jan, number = 3, numpages = {3}, owner = {Nick}, pages = {628--631}, publisher = {American Physical Society}, timestamp = {2010-11-06T00:14:42.000+0100}, title = {Anomalous Dispersion of LO Phonons in $La1.85Sr0.15CuO4$ at Low Temperatures}, volume = 82, year = 1999 }