Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

V. A. Vas'ko; C. A. Nordman; P. A. Kraus; V. S. Achutharaman; A. R. Ruosi; A. M. Goldman

doi:10.1063/1.116187

Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

V. A. Vas'ko
, C. A. Nordman
, P. A. Kraus
, V. S. Achutharaman
, A. R. Ruosi
, A. M. Goldman

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 Å in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 Å. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93% and 5% in applied magnetic fields of 5.12 and 4×10-2 T, respectively.

Original language	English (US)
Pages (from-to)	2571-2573
Number of pages	3
Journal	Applied Physics Letters
Volume	68
Issue number	18
DOIs	https://doi.org/10.1063/1.116187
State	Published - 1996

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title = "Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d",

abstract = "We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 {\AA} in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 {\AA}. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93\% and 5\% in applied magnetic fields of 5.12 and 4{\texttimes}10-2 T, respectively.",

author = "Vas'ko, \{V. A.\} and Nordman, \{C. A.\} and Kraus, \{P. A.\} and Achutharaman, \{V. S.\} and Ruosi, \{A. R.\} and Goldman, \{A. M.\}",

year = "1996",

doi = "10.1063/1.116187",

language = "English (US)",

volume = "68",

pages = "2571--2573",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

AU - Vas'ko, V. A.

AU - Nordman, C. A.

AU - Kraus, P. A.

AU - Achutharaman, V. S.

AU - Ruosi, A. R.

AU - Goldman, A. M.

PY - 1996

Y1 - 1996

N2 - We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 Å in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 Å. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93% and 5% in applied magnetic fields of 5.12 and 4×10-2 T, respectively.

AB - We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 Å in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 Å. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93% and 5% in applied magnetic fields of 5.12 and 4×10-2 T, respectively.

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U2 - 10.1063/1.116187

DO - 10.1063/1.116187

M3 - Article

AN - SCOPUS:0000532562

SN - 0003-6951

VL - 68

SP - 2571

EP - 2573

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

ER -

Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

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