High-TC ferromagnetic order in CaRuO3/La2/3Ca1/3MnO3 superlattices

被引：24

作者：

Chen, P. F. ^{[1
]}

Chen, B. B. ^{[1
]}

Tan, X. L. ^{[1
]}

Xu, H. R. ^{[1
]}

Xuan, X. F. ^{[1
]}

Guo, Z. ^{[1
]}

Jin, F. ^{[1
]}

Wu, W. B. ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci, Microscale & High Magnet Field Lab, Chinese Acad Sci, Hefei 230026, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 26期

关键词：

OXIDE SUPERLATTICES; EXCHANGE BIAS; INTERFACE; MAGNETOTRANSPORT; MANGANITES; FILMS;

D O I：

10.1063/1.4857715

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ferromagnetic-metallic ground state with high Curie temperature (T-C) of 200-258K has been observed in CaRuO3/La2/3Ca1/3MnO3 (CRO/LCMO) superlattices with the ultrathin LCMO layer of 0.8-3.2 nm thick. This contradicts the antiferromagnetic or low-T-C insulating ground state observed in single-layer LCMO thin-films. T-C and the saturated magnetization of the superlattices are determined dominantly by the LCMO layer thicknesses, indicating no direct magnetic contribution from the CRO layers or the interfaces. Also, they are less sensitive to the growth oxygen pressure as compared to the pure LCMO films. We ascribe the stabilized, bulklike ferromagnetism in the ultrathin LCMO layer to charge transfer from CRO at the interfaces, which could enhance the double-exchange and meanwhile suppress the phase separation, contrary to the case for LCMO thin-films. This interface engineering that can greatly depress the notorious "dead layer" in manganites might be significant in designing the correlated spintronic devices. (C) 2013 AIP Publishing LLC.

引用

页数：5

共 42 条

[1] Electronic phase separation at the LaAlO3/SrTiO3 interface [J].

Ariando ;

Wang, X. ;

Baskaran, G. ;

Liu, Z. Q. ;

Huijben, J. ;

Yi, J. B. ;

Annadi, A. ;

Barman, A. Roy ;

Rusydi, A. ;

Dhar, S. ;

Feng, Y. P. ;

Ding, J. ;

Hilgenkamp, H. ;

Venkatesan, T. .

NATURE COMMUNICATIONS, 2011, 2

[2] Atomic level observation of octahedral distortions at the perovskite oxide heterointerface [J].

Aso, Ryotaro ;

Kan, Daisuke ;

Shimakawa, Yuichi ;

Kurata, Hiroki .

SCIENTIFIC REPORTS, 2013, 3

[3] Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface [J].

Bert, Julie A. ;

Kalisky, Beena ;

Bell, Christopher ;

Kim, Minu ;

Hikita, Yasuyuki ;

Hwang, Harold Y. ;

Moler, Kathryn A. .

NATURE PHYSICS, 2011, 7 (10) :767-771

[4]

Bibes M, 2002, PHYS REV B, V66, DOI 10.1103/PhysRevB.66.134416

[5] Nanoferronics is a winning combination [J].

Bibes, Manuel .

NATURE MATERIALS, 2012, 11 (05) :354-357

[6] Dimensionality Control of Electronic Phase Transitions in Nickel-Oxide Superlattices [J].

Boris, A. V. ;

Matiks, Y. ;

Benckiser, E. ;

Frano, A. ;

Popovich, P. ;

Hinkov, V. ;

Wochner, P. ;

Castro-Colin, M. ;

Detemple, E. ;

Malik, V. K. ;

Bernhard, C. ;

Prokscha, T. ;

Suter, A. ;

Salman, Z. ;

Morenzoni, E. ;

Cristiani, G. ;

Habermeier, H. -U. ;

Keimer, B. .

SCIENCE, 2011, 332 (6032) :937-940

[7] Electronic phase separation in manganite-insulator interfaces [J].

Brey, Luis .

PHYSICAL REVIEW B, 2007, 75 (10)

[8] Sensitivity to disorder of the metallic state in the ruthenates [J].

Capogna, L ;

Mackenzie, AP ;

Perry, RS ;

Grigera, SA ;

Galvin, LM ;

Raychaudhuri, P ;

Schofield, AJ ;

Alexander, CS ;

Cao, G ;

Julian, SR ;

Maeno, Y .

PHYSICAL REVIEW LETTERS, 2002, 88 (07) :766021-766024

[9] Whither the oxide interface [J].

Chakhalian, J. ;

Millis, A. J. ;

Rondinelli, J. .

NATURE MATERIALS, 2012, 11 (02) :92-94

[10] Origin of doping effects on the oxygen storage capacity of Ce1-xMxO2 (M = Fe, Ru, Os, Sm, Pu) [J].

Chen, Hui-Lung ;

Chang, Jee-Gong ;

Chen, Hsin-Tsung .

CHEMICAL PHYSICS LETTERS, 2011, 502 (4-6) :169-172

← 1 2 3 4 5 →