title: Direct Imaging of Dynamic Glassy Behavior in a Strained Manganite Film.
abstract: Complex many-body interaction in perovskite manganites gives rise to a strong competition between ferromagnetic metallic and charge-ordered phases with nanoscale electronic inhomogeneity and glassy behaviors. Investigating this glassy state requires high-resolution imaging techniques with sufficient sensitivity and stability. Here, we present the results of a near-field microwave microscope imaging on the strain-driven glassy state in a manganite film. The high contrast between the two electrically distinct phases allows direct visualization of the phase separation. The low-temperature microscopic configurations differ upon cooling with different thermal histories. At sufficiently high temperatures, we observe switching between the two phases in either direction. The dynamic switching, however, stops below the glass transition temperature. Compared with the magnetization data, the phase separation was microscopically frozen, while spin relaxation was found in a short period of time.
authors.affiliation: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.|School of Physics, Institute of Science, Suranaree University of Technology, Nakorn Ratchasima, Thailand.
authors.forename: Worasom
authors.initials: W
authors.lastname: Kundhikanjana
authors.affiliation: RIKEN Center for Emergent Matter Science (CEMS), Wako 251-0198, Japan.|High Magnetic Field Laboratory of Chinese Academy of Science, Hefei 230031, China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Zhigao
authors.initials: Z
authors.lastname: Sheng
authors.affiliation: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA.
authors.forename: Keji
authors.initials: K
authors.lastname: Lai
authors.affiliation: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
authors.forename: Eric Yue
authors.initials: EY
authors.lastname: Ma
authors.affiliation: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
authors.forename: Yong-Tao
authors.initials: YT
authors.lastname: Cui
authors.affiliation: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Kelly
authors.affiliation: RIKEN Center for Emergent Matter Science (CEMS), Wako 251-0198, Japan.
authors.forename: Masao
authors.initials: M
authors.lastname: Nakamura
authors.affiliation: RIKEN Center for Emergent Matter Science (CEMS), Wako 251-0198, Japan.|Department of Applied Physics and Quantum Phase Electronics Research Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Kawasaki
authors.affiliation: RIKEN Center for Emergent Matter Science (CEMS), Wako 251-0198, Japan.|Department of Applied Physics and Quantum Phase Electronics Research Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tokura
authors.affiliation: State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
authors.forename: Qiaochu
authors.initials: Q
authors.lastname: Tang
authors.affiliation: State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Zhang
authors.affiliation: State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
authors.forename: Xinxin
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
authors.forename: Zhi-Xun
authors.initials: ZX
authors.lastname: Shen