Band-selective measurements of electron dynamics in VO2 using femtosecond near-edge x-ray absorption -: art. no. 067405

被引：231

作者：

Cavalleri, A ^{[1
]}

Rini, M

Chong, HHW

Fourmaux, S

Glover, TE

Heimann, PA

Kieffer, JC

Schoenlein, RW

机构：

[1] Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA

[2] Lawrence Berkeley Natl Lab, Adv Light Source Div, Berkeley, CA USA

[3] Univ Quebec, INRS Energie & Mat, Varennes, PQ, Canada

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.95.067405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the first demonstration of femtosecond x-ray absorption spectroscopy, made uniquely possible by the use of broadly tunable bending-magnet radiation from "laser-sliced" electron bunches within a synchrotron storage ring. We measure the femtosecond electronic rearrangements that occur during the photoinduced insulator-metal phase transition in VO2. Symmetry- and element-specific x-ray absorption from V2p and O1s core levels (near 500 eV) separately measures the filling dynamics of differently hybridized V3d-O2p electronic bands near the Fermi level.

引用

页数：4

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