In Memoriam: Charles S. Fadley, Longstanding Collaboration Partner, Power User, Advisor

‘Chuck’ Fadley spoke at the inauguration of the EMIL facility in 2016.

‘Chuck’ Fadley spoke at the inauguration of the EMIL facility in 2016. © HZB/D. Ausserhofer

Charles ‘Chuck’ S. Fadley, a pioneer in photoemission spectroscopy and internationally renowned Distinguished Professor Emeritus of Physics at the University of California, Davis, and Senior Faculty Scientist at the Lawrence Berkeley National Laboratory, USA, passed away on the 1st of August 2019. He remained an active and avid researcher until a few weeks before his death at age 77.

Anyone who spent any length of time working with x-ray photoemission spectroscopy would eventually come to the point where they would no longer be surprised to walk into any meeting, lab, or conference, anywhere, and find Chuck already there, ahead of them. The same thing could happen if you thought you had a new idea. So, there is no surprise in saying that Chuck has left his mark in the photoemission-related areas of BESSY II.

Chuck was one of the most important promoters of the Energy Materials In-Situ Laboratory Berlin (EMIL). Between 2013 and 2017, Chuck was the head of the EMIL International Advisory Committee that counselled the HZB Board of Directors and the Scientific Advisory Committee on the EMIL facility and its operation, scientific topics, optimization of the instruments, and collaborations with institutes and industry. He offered his outstanding expertise on X-ray photoelectron spectroscopy in elaborate recommendations for the operation and future development of EMIL, helping make it a truly unique and innovative facility.

Chuck was also an active researcher at BESSY II where he worked, among other things, on novel magnetoelectric interfaces for low-power spintronics. He also explored new approaches to studying subsurface structures; a very challenging endeavor considering that the probing depth of X-ray photoelectron spectroscopy is limited to the first few layers beneath a solid surface. Together with colleagues at BESSY II, Chuck developed the so-called “swedge method”: after growing a multilayered sample on top of a nanometer-scale, multilayered mirror, the exciting radiation field can be 'tailored' into an oscillatory standing wave of the same length scale. For the first time, they showed that this standing wave can be deliberately moved up and down within the sample layers, providing excellent depth (z) resolution in photoemission studies.

Chuck received several awards  for his outstanding scientific achievements.

His ability to develop new ideas and to inspire colleagues made Prof. Chuck an exceptional partner to work with. Our thoughts are with his family. We will miss him as a brilliant colleague and a dear, colorful friend, and will cherish his memory.

You might also be interested in

  • Professorship at the University of Augsburg for Felix Büttner
    News
    29.08.2022
    Professorship at the University of Augsburg for Felix Büttner
    Felix Büttner has led a junior research group at HZB. Now he has accepted a call to the University of Augsburg. As head of a joint research group, he will continue his studies of magnetic skyrmions at BESSY II.
  • Humboldt Fellow Alexander Gray comes to HZB
    News
    12.08.2022
    Humboldt Fellow Alexander Gray comes to HZB
    Alexander Gray from Temple University in Philadelphia, USA, is working with HZB physicist Florian Kronast to investigate novel 2D quantum materials at BESSY II. With the fellowship from the Alexander von Humboldt Foundation, he can now deepen this cooperation. At BESSY II, he wants to further develop depth-resolved X-ray microscopic and spectroscopic methods in order to investigate 2D quantum materials and devices for new information technologies even more thoroughly.
  • Young investigator research group on electrocatalysis at HZB
    News
    01.08.2022
    Young investigator research group on electrocatalysis at HZB
    Dr. Michelle Browne establishes her own young investigator group at the HZB . Starting in August, the group is co-funded by the Helmholtz Association for the next five years. The electrochemist from Ireland concentrates on electrolytically active novel material systems and wants to develop next-generation electrocatalysts, for example hydrogen production. At HZB she will find the perfect environment to conduct her research.