%0 Journal Article %1 Shukla2003 %A Shukla, Abhay %A Calandra, Matteo %A d'Astuto, Matteo %A Lazzeri, Michele %A Mauri, Francesco %A Bellin, Christophe %A Krisch, Michael %A Karpinski, J. %A Kazakov, S. M. %A Jun, J. %A Daghero, D. %A Parlinski, K. %D 2003 %I American Physical Society %J Phys. Rev. Lett. %K imported %N 9 %P 095506 %R 10.1103/PhysRevLett.90.095506 %T Phonon Dispersion and Lifetimes in $MgB_2$ %V 90 %X We measure phonon dispersion and linewidth in a single crystal of MgB$_2$ along the $\Gamma-A$, $\Gamma-M$, and $A-L$ directions using inelastic x-ray scattering. We use density functional theory to compute the effect of both electron-phonon coupling and anharmonicity on the linewidth, obtaining excellent agreement with experiment. Anomalous broadening of the E2g phonon mode is found all along $\Gamma-A$. The dominant contribution to the linewidth is always the electron-phonon coupling.

@article{Shukla2003, abstract = {We measure phonon dispersion and linewidth in a single crystal of MgB$_2$ along the $\Gamma-A$, $\Gamma-M$, and $A-L$ directions using inelastic x-ray scattering. We use density functional theory to compute the effect of both electron-phonon coupling and anharmonicity on the linewidth, obtaining excellent agreement with experiment. Anomalous broadening of the E2g phonon mode is found all along $\Gamma-A$. The dominant contribution to the linewidth is always the electron-phonon coupling.}, added-at = {2010-11-06T00:14:39.000+0100}, author = {Shukla, Abhay and Calandra, Matteo and d'Astuto, Matteo and Lazzeri, Michele and Mauri, Francesco and Bellin, Christophe and Krisch, Michael and Karpinski, J. and Kazakov, S. M. and Jun, J. and Daghero, D. and Parlinski, K.}, biburl = {https://www.bibsonomy.org/bibtex/2af13896015a4236ddea24b183125d14a/nplumb}, doi = {10.1103/PhysRevLett.90.095506}, file = {:C\:\\Users\\Nick\\Documents\\Papers\\Shukla et al. - Phonon dispersion and lifetimes in MgB2.pdf:PDF}, interhash = {1aff86d6861e367b1367a49f6052876c}, intrahash = {af13896015a4236ddea24b183125d14a}, journal = {Phys. Rev. Lett.}, keywords = {imported}, month = Mar, number = 9, numpages = {4}, owner = {Nick}, pages = 095506, publisher = {American Physical Society}, timestamp = {2010-11-06T00:14:43.000+0100}, title = {Phonon Dispersion and Lifetimes in $MgB_{2}$}, volume = 90, year = 2003 }