Poor Man's Approach to Exploring the Electronic Structures in Transition-Metal Oxides

ORAL

Abstract

In transition metal oxides (TMOs), the interactions among electronic spins, charges and orbitals account for the exotic properties such as metal-insulator transition, high-temperature superconductivity and colossal magnetoresistance. However, decent angle-resolved photoemission spectroscopy (ARPES) data are still lacking in many "uncleavable" perovskite-structure TMOs, which hinders the comprehensive understanding of the emergent phenomena in these correlated materials. Here, we develop a new method to prepare clean surfaces of Nd0.8Sr0.2NiO3 and La0.7Ca0.3MnO3 thin films, and investigate their electronic structures to track the microscopic origin of the metal-insulator transitions in these two systems. Our method can be generalized to study the 4d and 5d TMOs.

*This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract DE-AC02-76SF00515.

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Publication: None

Presenters

  • Yong Zhong

    • Stanford University

Authors

  • Yong Zhong

    • Stanford University

  • Kyuho Lee

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Tiffany Chun-An Wang

    • Stanford Univ

  • Donghui Lu

    • SLAC - Natl Accelerator Lab

  • Makoto Hashimoto

    • SLAC - Natl Accelerator Lab

  • Harold Hwang

    • Stanford Univ
    • Stanford University

  • Zhixun Shen

    • Stanford University
    • Stanford Insitute for Materials and Energy Sciences
    • Stanford