中国物理B ›› 2013, Vol. 22 ›› Issue (12): 127301-127301.doi: 10.1088/1674-1056/22/12/127301

所属专题: TOPICAL REVIEW — Magnetism, magnetic materials, and interdisciplinary research

• SPECIAL TOPIC --- Non-equilibrium phenomena in soft matters • 上一篇    下一篇

Tuning the electrons at the LaAlO3/SrTiO3 interface:From growth to beyond growth

谢燕武a b, Hwang Harold Ya b   

  1. a Geballe Laboratory for Advanced Materials, Department of Applied Physics, Stanford University, Stanford, California 94305, USA;
    b Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 收稿日期:2013-09-14 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the Department of Energy, Office of Basic Energy Sciences (Grant No. DE-AC02-76SF00515). Xie Yan-Wu was also partially sponsored from the AFOSR-MURI on "Quantum Preservation, Simulation & Transfer in Oxide Nanostructures".

Tuning the electrons at the LaAlO3/SrTiO3 interface:From growth to beyond growth

Xie Yan-Wu (谢燕武)a b, Hwang Harold Ya b   

  1. a Geballe Laboratory for Advanced Materials, Department of Applied Physics, Stanford University, Stanford, California 94305, USA;
    b Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • Received:2013-09-14 Online:2013-10-25 Published:2013-10-25
  • Contact: Xie Yan-Wu E-mail:xieyanwu@stanford.edu
  • Supported by:
    Project supported by the Department of Energy, Office of Basic Energy Sciences (Grant No. DE-AC02-76SF00515). Xie Yan-Wu was also partially sponsored from the AFOSR-MURI on "Quantum Preservation, Simulation & Transfer in Oxide Nanostructures".

摘要: Recently, the quasi-two-dimensional electron gas (q2DEG) confined at the interface between LaAlO3 and SrTiO3 has attracted significant attention. In this paper, we briefly review experimental methods that have been used to tune the carrier density and mobility of this q2DEG. These methods can be classified into two categories: growth-related tuning (i.e. substrate, growth temperature, oxygen pressure, post-annealing, LaAlO3 thickness, stoichiometry, and capping layers) and post-growth tuning (i.e. electrostatic field gating, conductive atomic force microscopy and surface adsorbates). Taken together, these methods enable the broad tuning of the electronic properties of this interface.

关键词: LaAlO3/SrTiO3, strontium titanate, oxides, two-dimensional electron gas, interface

Abstract: Recently, the quasi-two-dimensional electron gas (q2DEG) confined at the interface between LaAlO3 and SrTiO3 has attracted significant attention. In this paper, we briefly review experimental methods that have been used to tune the carrier density and mobility of this q2DEG. These methods can be classified into two categories: growth-related tuning (i.e. substrate, growth temperature, oxygen pressure, post-annealing, LaAlO3 thickness, stoichiometry, and capping layers) and post-growth tuning (i.e. electrostatic field gating, conductive atomic force microscopy and surface adsorbates). Taken together, these methods enable the broad tuning of the electronic properties of this interface.

Key words: LaAlO3/SrTiO3, strontium titanate, oxides, two-dimensional electron gas, interface

中图分类号:  (Electron states at surfaces and interfaces)

  • 73.20.-r
73.40.-c (Electronic transport in interface structures) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))