Charge imbalance at oxide interfaces:: How nature deals with it

被引：14

作者：

Maurice, J. -L. ^{[1
]}

Devos, I. ^{[2
]}

Casanove, M. -J. ^{[3
]}

Carretero, C. ^{[1
]}

Gachet, G. ^{[1
,2
]}

Herranz, G. ^{[1
]}

Crete, D. -G. ^{[1
]}

Imhoff, D. ^{[4
]}

Barthelemy, A. ^{[1
]}

Bibes, M. ^{[5
]}

Bouzehouane, K. ^{[1
]}

Deranlot, C. ^{[1
]}

Fusil, S. ^{[1
]}

Jacquet, E. ^{[1
]}

Domenges, B. ^{[6
]}

Ballutaud, D. ^{[7
]}

机构：

[1] Univ Paris Sud, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France

[2] Inst Electron Microelectron Nanotechnol, Unite Mixte Rech, CNRS8520, F-59652 Villeneuve Dascq, France

[3] CNRS, Ctr Elaborat Mat Etudes Struct, F-31055 Toulouse, France

[4] Univ Paris Sud, Phys Solides Lab, CNRS 8502, UMR, F-91405 Orsay, France

[5] Univ Paris Sud, CNRS, Inst Elect Fondamentale, F-91405 Orsay, France

[6] ANADEF, LAMIP, Philips Semicond, F-14079 Caen, France

[7] GEMaC, CNRS, UMR 8635, F-92195 Meudon, France

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2007年 / 144卷 / 1-3期

关键词：

interfaces; oxides; space-charge; ab initio calculations; TEM; EELS;

D O I：

10.1016/j.mseb.2007.07.095

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Some interfaces in semiconductors or insulators structurally cause a valence mismatch, which leads to a two-dimensional space charge that must be balanced by localised or mobile charge carriers. Screening by mobile electrons presents a lot of theoretical as well as practical interests. However it is extremely rare, so that we are aware of only one case, on which we focus here: the (001) interface between LaAlO3 and TiO2-terminated SrTiO3. Theoretically, this interface between two insulators is positively charged. Electron conductivity is observed in this system, but whether it is associated with the interface screening or an extrinsic unintended doping is not yet settled. Here, we use the literature and our own numerical and practical experiments to discuss the physics of this system. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

共 35 条

[1] Nearly total spin polarization in La2/3Sr1/3MnO3 from tunneling experiments [J].

Bowen, M ;

Bibes, M ;

Barthélémy, A ;

Contour, JP ;

Anane, A ;

Lemaitre, Y ;

Fert, A .

APPLIED PHYSICS LETTERS, 2003, 82 (02) :233-235

[2] Growth and relaxation mechanisms in La0.66Sr0.33MnO3 manganites deposited on SrTiO3(001) and MgO(001) [J].

Casanove, MJ ;

Roucau, C ;

Baulès, P ;

Majimel, J ;

Ousset, JC ;

Magnoux, D ;

Bobo, JF .

APPLIED SURFACE SCIENCE, 2002, 188 (1-2) :19-23

[3] Photoemission (XPS and XPD) study of epitaxial LaAlO3 fiim grown on SrTiO3(001) [J].

El Kazzi, M. ;

Merckling, C. ;

Delhaye, G. ;

Arzel, L. ;

Grenet, G. ;

Bergignat, E. ;

Hollinger, G. .

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2006, 9 (06) :954-958

[4] QUANTUM TRANSPORT STUDIES OF GRAIN-BOUNDARIES IN P-HG1-XMNXTE [J].

GRABECKI, G ;

DIETL, T ;

SOBKOWICZ, P ;

KOSSUT, J ;

ZAWADZKI, W .

APPLIED PHYSICS LETTERS, 1984, 45 (11) :1214-1216

[5] ELECTRICAL-PROPERTIES OF GRAIN-BOUNDARIES IN POLYCRYSTALLINE COMPOUND SEMICONDUCTORS [J].

GREUTER, F ;

BLATTER, G .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1990, 5 (02) :111-137

[6] POLAR HETEROJUNCTION INTERFACES [J].

HARRISON, WA ;

KRAUT, EA ;

WALDROP, JR ;

GRANT, RW .

PHYSICAL REVIEW B, 1978, 18 (08) :4402-4410

[7] Transformation processes in LaAlO3:: Neutron diffraction, dielectric, thermal, optical, and Raman studies -: art. no. 054110 [J].

Hayward, SA ;

Morrison, FD ;

Redfern, SAT ;

Salje, EKH ;

Scott, JF ;

Knight, KS ;

Tarantino, S ;

Glazer, AM ;

Shuvaeva, V ;

Daniel, P ;

Zhang, M ;

Carpenter, MA .

PHYSICAL REVIEW B, 2005, 72 (05)

[8] High mobility in LaAlO3/SrTiO3 heterostructures:: Origin, dimensionality, and perspectives [J].

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. .

PHYSICAL REVIEW LETTERS, 2007, 98 (21)

[9] 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

[10] SPECTRUM-IMAGE - THE NEXT STEP IN EELS DIGITAL ACQUISITION AND PROCESSING [J].

JEANGUILLAUME, C ;

COLLIEX, C .

ULTRAMICROSCOPY, 1989, 28 (1-4) :252-257

← 1 2 3 4 →