Suppressed spin dephasing for two-dimensional and bulk electrons in GaAs wires due to engineered cancellation of spin-orbit interaction terms

S. Z. Denega; T. Last; J. Liu; A. Slachter; P. J. Rizo; P. H. M. van Loosdrecht; B. J. van Wees; D. Reuter; A. D. Wieck; C. H. van der Wal

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Suppressed spin dephasing for two-dimensional and bulk electrons in GaAs wires due to engineered cancellation of spin-orbit interaction terms

机译：由于自旋轨道相互作用项的工程抵消，GaAs导线中二维和体电子的自旋相移受到抑制

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We report a study of suppressed spin dephasing for quasi-one-dimensional electron ensembles in wires etched into a GaAs/AlGaAs heterojunction system. Time-resolved Kerr-rotation measurements show a suppression that is most pronounced for wires along the [110] crystal direction. This is the fingerprint of a suppression that is enhanced due to a strong anisotropy in spin-orbit fields that can occur when the Rashba and Dresselhaus contributions are engineered to cancel each other. A surprising observation is that this mechanism for suppressing spin dephasing is not only effective for electrons in the heterojunction quantum well but also for electrons in a deeper bulk layer.

机译：我们报告了对刻蚀到GaAs / AlGaAs异质结系统中的导线中的准一维电子集合的抑制自旋相移的研究。时间分辨的Kerr旋转测量显示出沿[110]晶体方向的导线最明显的抑制作用。这是由于自旋轨道场中存在强烈的各向异性而导致的抑制指纹，当将Rashba和Dresselhaus贡献设计为相互抵消时，会发生这种情况。令人惊讶的观察是，这种抑制自旋相移的机制不仅对异质结量子阱中的电子有效，而且对更深的体层中的电子有效。

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来源
《Physical review》 |2010年第15期|153302.1-153302.4|共4页
作者
S. Z. Denega; T. Last; J. Liu; A. Slachter; P. J. Rizo; P. H. M. van Loosdrecht; B. J. van Wees; D. Reuter; A. D. Wieck; C. H. van der Wal;
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Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

rnZernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

rnZernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

rnZernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

rnZernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

rnZernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

rnZernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

rnAngewandte Festkoerperphysik, Ruhr-Universitaet Bochum, D-44780 Bochum, Germany;

rnAngewandte Festkoerperphysik, Ruhr-Universitaet Bochum, D-44780 Bochum, Germany;

rnZernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands;

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quantum wires; spin relaxation and scattering; spin-orbit coupling, zeeman and stark splitting, jahn-teller effect; quantum wires;

机译：量子线;自旋弛豫和散射;自旋轨道耦合;塞曼和斯塔克分裂;詹恩-泰勒效应;量子线;

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1. Electron-Dephasing Time in a Two-Dimensional Spin-Polarized System with Rashba Spin-Orbit Interaction [J] . D. C. Marinescu Physical review letters . 2006,第17期

机译：具有Rashba自旋轨道相互作用的二维自旋极化系统中的电子移相时间
2. Strong Spin-Orbit Interactions in an InAIAs/lnGaAs/lnAIAs Two-Dimensional Electron Gas by Weak Antilocalization Analysis [J] . Lei Sun, Wenzheng Zhou, Guolin Yu, Japanese journal of applied physics . 2009,第6issue1期

机译：InAIAs / lnGaAs / lnAIAs二维电子气中的强自旋轨道相互作用的弱反定位分析
3. Energy spectra for quantum wires and two-dimensional electron gases in magnetic fields with Rashba and Dresselhaus spin-orbit interactions [J] . Sigurdur I. Erlingsson, J. Carlos Egues, Daniel Loss Physical review . 2010,第15期

机译：具有Rashba和Dresselhaus自旋轨道相互作用的磁场中的量子线和二维电子气的能谱
4. Characteristics of Dispersion and Transport of Spin-Polarized Electrons in a Quantum Wire with Rashba Spin-Orbit Interaction and Inhomogeneous Magnetic Fields [C] . Ben-Yuan Gu, Hui Su, American Institute of Physics International Conference on Low Temperature Physics . 2005

机译：用Rashba旋转轨道相互作用和不均匀磁场旋转旋转电子在量子丝中的分散和传输特性
5. Spin dynamics in the presence of spin-orbit interactions: From the weak to the strong spin-orbit coupling regime [D] . Liu, Xin. 2012

机译：旋转动态在旋转轨道相互作用的存在下：从弱到强旋转轨道耦合方案
6. Quadrupolar and anisotropy effects on dephasing in two-electron spin qubits in GaAs [O] . Tim Botzem, Robert P. G. McNeil, Jan-Michael Mol, -1

机译：GaAs中两电子自旋量子位相移的四极和各向异性效应
7. Suppressed spin dephasing for two-dimensional and bulk electrons in GaAs wires due to engineered cancellation of spin-orbit interaction terms [O] . Denega S.Z., Last Thorsten, Liu J., 2010

机译：由于自旋轨道相互作用项的工程抵消，GaAs导线中二维和体电子的自旋相移受到抑制

Suppressed spin dephasing for two-dimensional and bulk electrons in GaAs wires due to engineered cancellation of spin-orbit interaction terms

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