title: Instrument for x-ray absorption spectroscopy with in situ electrical control characterizations.
abstract: We report a synchrotron-based setup capable of performing x-ray absorption spectroscopy and x-ray magnetic circular dichroism with simultaneous electrical control characterizations. The setup can enable research concerning electrical transport, element- and orbital-selective magnetization with an in situ fashion. It is a unique approach to the real-time change of spin-polarized electronic state of a material/device exhibiting magneto-electric responses. The performance of the setup was tested by probing the spin-polarized states of cobalt and oxygen of Zn(1-x)Co(x)O dilute magnetic semiconductor under applied voltages, both at low (~20 K) and room temperatures, and signal variations upon the change of applied voltage were clearly detected.
authors.affiliation: Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: Chun-Chao
authors.initials: CC
authors.lastname: Huang
authors.affiliation: Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: Shu-Jui
authors.initials: SJ
authors.lastname: Chang
authors.affiliation: Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: Chao-Yao
authors.initials: CY
authors.lastname: Yang
authors.affiliation: Department of Physics, National Sun Yat-sen University, Kaohsiung, Taiwan.
authors.forename: Hsiung
authors.initials: H
authors.lastname: Chou
authors.affiliation: Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: Yuan-Chieh
authors.initials: YC
authors.lastname: Tseng