Rapid construction of a phase diagram of doped Mott insulators with a composition-spread approach

Fukumura, T.; Ohtani, M.; Kawasaki, M.; Okimoto, Y.; Kageyama, T.; Hasegawa, T.; Koida, T.; Tokura, Y.; Koinuma, H.
November 2000
Applied Physics Letters;11/20/2000, Vol. 77 Issue 21
Academic Journal
We propose a method of rapid construction of a structural-magnetic-electronic phase diagram of doped Mott insulators. The composition-spread method is utilized for fabricating a film whose doping concentration varies from 0 to 1 continuously. The concurrent x-ray diffractometer that measures x-ray diffraction spectra of all the composition simultaneously, the scanning superconducting quantum interference device microscope, and the infrared optical spectroscopy are employed for characterizing the film. A demonstration is given for a colossal magnetoresistive material, La[sub 1-x]Sr[sub x]MnO[sub 3]. © 2000 American Institute of Physics.


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