High mobility in LaAlO3/SrTiO3 heterostructures:: Origin, dimensionality, and perspectives

被引：543

作者：

Herranz, G.

Basletic, M.

Bibes, M.

Carretero, C.

Tafra, E.

Jacquet, E.

Bouzehouane, K.

Deranlot, C.

Hamzic, A.

Broto, J.-M.

Barthelemy, A.

Fert, A.

机构：

[1] CNRS Thales, Unite Mixte Phys, F-91767 Palaiseau, France

[2] Univ Zagreb, Dept Phys, Fac Sci, HR-10002 Zagreb, Croatia

[3] Univ Paris 11, CNRS, Inst Elect Fondamentale, F-91405 Orsay, France

[4] Univ Toulouse 3, Lab Natl Champs Magnet Pulses, F-31400 Toulouse, France

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.98.216803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the dimensionality and origin of the magnetotransport properties of LaAlO3 films epitaxially grown on TiO2-terminated SrTiO3 (001) substrates. High-mobility conduction is observed at low deposition oxygen pressures (P-O2 < 10(-5) mbar) and has a three-dimensional character. However, at higher P-O2 the conduction is dramatically suppressed and nonmetallic behavior appears. Experimental data strongly support an interpretation of these properties based on the creation of oxygen vacancies in the SrTiO3 substrates during the growth of the LaAlO3 layer. When grown on SrTiO3 substrates at low P-O2, other oxides generate the same high mobility as LaAlO3 films. This opens interesting prospects for all-oxide electronics.

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页数：4

相关论文

共 22 条

[1] SEMICONDUCTOR-TO-METAL TRANSITION IN N-TYPE GROUP 4 SEMICONDUCTORS [J].

ALEXANDER, MN ;

HOLCOMB, DF .

REVIEWS OF MODERN PHYSICS, 1968, 40 (04) :815-+

[2] HALL MOBILITY IN SRTIO3 [J].

FREDERIKSE, HP ;

HOSLER, WR .

PHYSICAL REVIEW, 1967, 161 (03) :822-+

[3] ELECTRONIC TRANSPORT IN STRONTIUM TITANATE [J].

FREDERIKSE, HPR ;

THURBER, WR ;

HOSLER, WR .

PHYSICAL REVIEW, 1964, 134 (2A) :A442-+

[4] Full oxide heterostructure combining a high-TC diluted ferromagnet with a high-mobility conductor [J].

Herranz, G ;

Basletic, M ;

Bibes, M ;

Ranchal, R ;

Hamzic, A ;

Tafra, E ;

Bouzehouane, K ;

Jacquet, E ;

Contour, JP ;

Barthélémy, A ;

Fert, A .

PHYSICAL REVIEW B, 2006, 73 (06)

[5] Co-doped (La,Sr)TiO3-δ:: A high curie temperature diluted magnetic system with large spin polarization -: art. no. 027207 [J].

Herranz, G ;

Ranchal, R ;

Bibes, M ;

Jaffrès, H ;

Jacquet, E ;

Maurice, JL ;

Bouzehouane, K ;

Wyczisk, F ;

Tafra, E ;

Basletic, M ;

Hamzic, A ;

Colliex, C ;

Contour, JP ;

Barthélémy, A ;

Fert, A .

PHYSICAL REVIEW LETTERS, 2006, 96 (02)

[6] Electronically coupled complementary interfaces between perovskite band insulators [J].

Huijben, Mark ;

Rijnders, Guus ;

Blank, Dave H. A. ;

Bals, Sara ;

Van Aert, Sandra ;

Verbeeck, Jo ;

Van Tendeloo, Gustaaf ;

Brinkman, Alexander ;

Hilgenkamp, Hans .

NATURE MATERIALS, 2006, 5 (07) :556-560

[7] High-mobility electrons in SrTiO3 heterostructures [J].

Hwang, HY ;

Ohtomo, A ;

Nakagawa, N ;

Muller, DA ;

Grazul, JL .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2004, 22 (1-3) :712-716

[8] DIFFUSION OF OXIDE ION VACANCIES IN PEROVSKITE-TYPE OXIDES [J].

ISHIGAKI, T ;

YAMAUCHI, S ;

KISHIO, K ;

MIZUSAKI, J ;

FUEKI, K .

JOURNAL OF SOLID STATE CHEMISTRY, 1988, 73 (01) :179-187

[9] Effect of oxygen vacancies in the SrTiO3 substrate on the electrical properties of the LaAlO3/SrTiO3 interface [J].

Kalabukhov, Alexey ;

Gunnarsson, Robert ;

Borjesson, Johan ;

Olsson, Eva ;

Claeson, Tord ;

Winkler, Dag .

PHYSICAL REVIEW B, 2007, 75 (12)

[10] ELECTRONIC CONDUCTION IN SLIGHTLY REDUCED STRONTIUM TITANATE AT LOW TEMPERATURES [J].

LEE, C ;

YAHIA, J ;

BREBNER, JL .

PHYSICAL REVIEW B-SOLID STATE, 1971, 3 (08) :2525-&