Magnetic measurements with atomic-plane resolution

Rapid development of magnetic nanotechnologies calls for experimental techniques capable of providing magnetic information with subnanometre spatial resolution. Available probes of magnetism either detect only surface properties, such as spin-polarized scanning tunnelling microscopy, magnetic force microscopy or spin-polarized low-energy electron microscopy, or they are bulk probes with limited spatial resolution or quantitativeness, such as X-ray magnetic circular dichroism or classical electron magnetic circular dichroism (EMCD). Atomic resolution EMCD methods have been proposed, although not yet experimentally realized. Here, we demonstrate an EMCD technique with an atomic size electron probe utilizing a probe-corrected scanning transmission electron microscope in its standard operation mode. The crucial element of the method is a ramp in the phase of the electron beam wavefunction, introduced by a controlled beam displacement. We detect EMCD signals with atomic-plane resolution, thereby bringing near-atomic resolution magnetic circular dichroism spectroscopy to hundreds of laboratories worldwide.

Muto, ShunsukeNagoya Univ, Inst Mat & Syst Sustainabil, Adv Measurement Technol Ctr, Chikusa Ku, Nagoya, Aichi 4648603, Japan. (författare)
Spiegelberg, JakobUppsala universitet,Materialteori(Swepub:uu)jaksp603 (författare)
Adam, RomanForschungszentrum Julich, Peter Grunberg Inst, Elect Properties PGI 6, D-52425 Julich, Germany. (författare)
Tatsumi, KazuyoshiNagoya Univ, Inst Mat & Syst Sustainabil, Adv Measurement Technol Ctr, Chikusa Ku, Nagoya, Aichi 4648603, Japan. (författare)
Buergler, Daniel E.Forschungszentrum Julich, Peter Grunberg Inst, Elect Properties PGI 6, D-52425 Julich, Germany. (författare)
Oppeneer, Peter M.Uppsala universitet,Materialteori,.(Swepub:uu)peopp623 (författare)
Schneider, Claus M.Forschungszentrum Julich, Peter Grunberg Inst, Elect Properties PGI 6, D-52425 Julich, Germany. (författare)
Uppsala universitetMaterialteori (creator_code:org_t)

Ingår i:Nature Communications: Springer Science and Business Media LLC72041-1723

Av författaren/redakt...: Rusz, Ján; Muto, Shunsuke; Spiegelberg, Jak ...; Adam, Roman; Tatsumi, Kazuyos ...; Buergler, Daniel ...; visa fler...; Oppeneer, Peter ...; Schneider, Claus ...; visa färre...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.