TY - GEN
T1 - X-ray magnetic circular dichroism probed using high harmonics
AU - Grychtol, Patrik
AU - Kfir, Ofer
AU - Knut, Ronny
AU - Knut, Ronny
AU - Turgut, Emrah
AU - Zusin, Dmitriy
AU - Popmintchev, Dimitar
AU - Popmintchev, Tenio
AU - Nembach, Hans
AU - Shaw, Justin
AU - Fleischer, Avner
AU - Kapteyn, Henry
AU - Murnane, Margaret
AU - Cohen, Oren
N1 - Publisher Copyright:
© Springer International Publishing Switzerland 2015.
PY - 2015
Y1 - 2015
N2 - We demonstrate the first generation and phase matching of circularlypolarized high harmonics, which are bright enough for X-ray magnetic circular dichroism measurements at the M absorption edges of the magnetic materials Fe, Co and Ni. Circularly polarized light in the extreme ultraviolet (EUV) and soft X-ray regions of the electromagnetic spectrum is extremely useful for exploring chirality-sensitive light-matter interactions. X-ray magnetic circular dichroism (XMCD) makes it possible to extract detailed information about the magnetic state of matter and its interaction with phononic and electronic degrees of freedom on femtosecond time scales and nanometer length scales. Specifically, XMCD can be used to distinguish between spin and orbital contributions to the atomic magnetic moment in ferromagnetic materials, with element-specificity, which is not possible using ultrafast visible laser spectroscopy. To date, circularly polarized EUV and soft X-ray beams were restricted to large-scale electron storage facilities, such as synchrotrons and Xray free electron lasers. Such facilities have great advantages of high peak and average powers in the X-ray region. However, drawbacks include experimental complexity, limited access and temporal resolution, as well as pump/probe jitter.
AB - We demonstrate the first generation and phase matching of circularlypolarized high harmonics, which are bright enough for X-ray magnetic circular dichroism measurements at the M absorption edges of the magnetic materials Fe, Co and Ni. Circularly polarized light in the extreme ultraviolet (EUV) and soft X-ray regions of the electromagnetic spectrum is extremely useful for exploring chirality-sensitive light-matter interactions. X-ray magnetic circular dichroism (XMCD) makes it possible to extract detailed information about the magnetic state of matter and its interaction with phononic and electronic degrees of freedom on femtosecond time scales and nanometer length scales. Specifically, XMCD can be used to distinguish between spin and orbital contributions to the atomic magnetic moment in ferromagnetic materials, with element-specificity, which is not possible using ultrafast visible laser spectroscopy. To date, circularly polarized EUV and soft X-ray beams were restricted to large-scale electron storage facilities, such as synchrotrons and Xray free electron lasers. Such facilities have great advantages of high peak and average powers in the X-ray region. However, drawbacks include experimental complexity, limited access and temporal resolution, as well as pump/probe jitter.
UR - http://www.scopus.com/inward/record.url?scp=84922190356&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-13242-6_15
DO - 10.1007/978-3-319-13242-6_15
M3 - 会议稿件
AN - SCOPUS:84922190356
T3 - Springer Proceedings in Physics
SP - 60
EP - 63
BT - Ultrafast Phenomena XIX - Proceedings of the 19th International Conference
A2 - DiMauro, Louis
A2 - de Vivie-Riedle, Regina
A2 - Yamanouchi, Kaoru
A2 - Kuwata-Gonokami, Makoto
A2 - Cundiff, Steven
PB - Springer Science and Business Media, LLC
T2 - 19th International Conference on Ultrafast Phenomena, 2014
Y2 - 7 July 2014 through 11 July 2014
ER -