Epitaxial growth and properties of La0.7Sr0.3MnO3 thin films with micrometer wide atomic terraces

被引：15

作者：

Yuan, Wei ^{[1
]}

Zhao, Yuelei ^{[1
]}

Tang, Chi ^{[2
]}

Su, Tang ^{[1
]}

Song, Qi ^{[1
]}

Shi, Jing ^{[2
]}

Han, Wei ^{[1
,3
]}

机构：

[1] Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China

[2] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

[3] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 02期

关键词：

GIANT MAGNETORESISTANCE; SPIN; LA2/3SR1/3MNO3; TRANSITION;

D O I：

10.1063/1.4926922

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

La0.7Sr0.3MnO3 (LSMO) films with extraordinarily wide atomic terraces are epitaxially grown on SrTiO3 (100) substrates by pulsed laser deposition. Atomic force microscopy measurements on the LSMO films show that the atomic step is similar to 4 angstrom and the atomic terrace width is more than 2 mu m. For a 20 monolayers (MLs) LSMO film, the magnetization is determined to be 255 +/- 15 emu/cm(3) at room temperature, corresponding to 1.70 +/- 0.11 mu(B) per Mn atom. As the thickness of LSMO increases from 8 MLs to 20 MLs, the critical thickness for the temperature dependent insulator-to-metal behavior transition is shown to be 9 MLs. Furthermore, post-annealing in oxygen environment improves the electron transport and magnetic properties of the LSMO films. (C) 2015 AIP Publishing LLC.

引用

页数：5

共 23 条

[1] Suppression of the metal-insulator transition temperature in thin La0.7Sr0.3MnO3 films
Angeloni, M
Balestrino, G
Boggio, NG
Medaglia, PG
Orgiani, P
Tebano, A
[J]. JOURNAL OF APPLIED PHYSICS, 2004, 96 (11) : 6387 - 6392
[2] Unravelling the role of the interface for spin injection into organic semiconductors
Barraud, Clement
Seneor, Pierre
Mattana, Richard
Fusil, Stephane
Bouzehouane, Karim
Deranlot, Cyrile
Graziosi, Patrizio
Hueso, Luis
Bergenti, Ilaria
Dediu, Valentin
Petroff, Frederic
Fert, Albert
[J]. NATURE PHYSICS, 2010, 6 (08) : 615 - 620
[3] Optimized fabrication of high-quality La0.67Sr0.33MnO3 thin films considering all essential characteristics
Boschker, H.
Huijben, M.
Vailionis, A.
Verbeeck, J.
van Aert, S.
Luysberg, M.
Bals, S.
van Tendeloo, G.
Houwman, E. P.
Koster, G.
Blank, D. H. A.
Rijnders, G.
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2011, 44 (20)
[4] Nearly total spin polarization in La2/3Sr1/3MnO3 from tunneling experiments
Bowen, M
Bibes, M
Barthélémy, A
Contour, JP
Anane, A
Lemaitre, Y
Fert, A
[J]. APPLIED PHYSICS LETTERS, 2003, 82 (02) : 233 - 235
[5] LSMO - growing opportunities by PLD and applications in spintronics
Cesaria, M.
Caricato, A. P.
Maruccio, G.
Martino, M.
[J]. INTERNATIONAL CONFERENCE ON TRENDS IN SPINTRONICS AND NANOMAGNETISM (TSN 2010), 2011, 292
[6] Han W, 2014, NAT NANOTECHNOL, V9, P794, DOI [10.1038/nnano.2014.214, 10.1038/NNANO.2014.214]
[7] Transformation of spin information into large electrical signals using carbon nanotubes
Hueso, Luis E.
Pruneda, Jose M.
Ferrari, Valeria
Burnell, Gavin
Valdes-Herrera, Jose P.
Simons, Benjamin D.
Littlewood, Peter B.
Artacho, Emilio
Fert, Albert
Mathur, Neil D.
[J]. NATURE, 2007, 445 (7126) : 410 - 413
[8] Critical thickness and orbital ordering in ultrathin La0.7Sr0.3MnO3 films
Huijben, M.
Martin, L. W.
Chu, Y. -H.
Holcomb, M. B.
Yu, P.
Rijnders, G.
Blank, D. H. A.
Ramesh, R.
[J]. PHYSICAL REVIEW B, 2008, 78 (09)
[9] Stress-induced effects in epitaxial (La0.7Sr0.3)MnO3 films
Kwon, C
Robson, MC
Kim, KC
Gu, JY
Lofland, SE
Bhagat, SM
Trajanovic, Z
Rajeswari, M
Venkatesan, T
Kratz, AR
Gomez, RD
Ramesh, R
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1997, 172 (03) : 229 - 236
[10] Vertical Graphene Spin Valves Based on La2/3Sr1/3MnO3 Electrodes
Li, Feng
Li, Tian
Guo, Xinyi
[J]. ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (02) : 1187 - 1192

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