Melting of Al Induced by Laser Excitation of 2p Holes

作者：Rosandi Yudi; Kabeer Fairoja Cheenicode; Cherednikov Yaroslav; Zijlstra Eeuwe S; Garcia Martin E; Inogamov Nail A; Urbassek Herbert M^*

来源：Materials Research Letters, 2015, 3(3): 149-155.

DOI：10.1080/21663831.2015.1033564

• Laser Materials Processing
• XUV Irradiation
• Molecular Dynamics
• Al

Novel photon sources-such as XUV-or X-ray lasers-allow to selectively excite core excitations in materials. We study the response of a simple metal, Al, to the excitation of 2p holes using molecular dynamics simulations. During the lifetime of the holes, the interatomic interactions in the slab are changed; we calculate these using WIEN2k. We find that the melting dynamics after core-hole excitation is dominated by classical electron-phonon dynamics. The effects of the changed potential surface for excited Al atoms occur on the time scale of 100 fs, corresponding to the Debye time of the lattice.

• 出版日期2015