Spin and phase coherence lengths in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>n</mml:mi><mml:mtext>-InSb</mml:mtext></mml:mrow></mml:math>quasi-one-dimensional wires

Kallaher, R. L.; Heremans, J. J.; Goel, N.; Chung, S. J.; Santos, M. B.

doi:10.1103/physrevb.81.035335

Cited by 29 publications

(26 citation statements)

References 59 publications

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“…To complete the picture, we note that BIA and SIA induced CPGE, SGE, and MPGE have been also observed in (001)-oriented InSb/(Al,In)Sb and HgTe/CdHgTe quantum well structures [65,[199][200][201][202]. These narrow band materials are of particular interest for spin physics because they are characterized by high mobility and small effective masses as well as by a very large g * -factor and spin-orbit splitting [203][204][205][206][207]. So far, while confirmed the band spin splitting, most of the studies have been aimed to the mechanisms of the current formation in these novel materials, which can now be extended by special studies aimed to SIA/BIA interplay.…”

Section: Interplay Of Bia and Sia In (001)- (110)- And (111)-grown mentioning

confidence: 99%

Interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy –A review

Ganichev

Golub²

2014

Physica Status Solidi (b)

204

205

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.The paper reviews the interplay of Rashba/Dresselhaus spin splittings in various two-dimensional systems made of zincblende III-V, wurtzite, and SiGe semiconductors. We discuss the symmetry aspects of the linear and cubic in electron wavevector spin splitting in heterostructures prepared on (001)-, (110)-, (111)-, (113)-, (112)-, and (013)-oriented substrates and address the requirements for suppression of spin relaxation and realization of the persistent spin helix state. In experimental part of the paper, we overview experimental results on the interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy: The method based on the phenomenological equivalence of the linear-in-wavevector spin splitting and several photogalvanic phenomena.

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Section: Interplay Of Bia and Sia In (001)- (110)- And (111)-grown mentioning

confidence: 99%

Interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy –A review

Ganichev

Golub²

2014

Physica Status Solidi (b)

204

205

View full text Add to dashboard Cite

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.The paper reviews the interplay of Rashba/Dresselhaus spin splittings in various two-dimensional systems made of zincblende III-V, wurtzite, and SiGe semiconductors. We discuss the symmetry aspects of the linear and cubic in electron wavevector spin splitting in heterostructures prepared on (001)-, (110)-, (111)-, (113)-, (112)-, and (013)-oriented substrates and address the requirements for suppression of spin relaxation and realization of the persistent spin helix state. In experimental part of the paper, we overview experimental results on the interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy: The method based on the phenomenological equivalence of the linear-in-wavevector spin splitting and several photogalvanic phenomena.

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“…Further, the weak antilocalization phenomenon in ρ near B = 0 can be used to determine SOI constants. Here, different model have been developed which help to evaluate experimental data only in specific parameter regimes [25][26][27][28][29][30]. The spin-Galvanic effect [31] was employed to extract the ratio and relative sign, but not the absolute values of R-SOI and D-SOI constants.…”

Section: Introductionmentioning

confidence: 99%

Spin–orbit interaction in the magnetization of two‐dimensional electron systems

Wilde

Rupprecht

Herzog

et al. 2014

Physica Status Solidi (b)

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.We review recent experimental and theoretical work on the quantum oscillations of the magnetization M, i.e., the de Haasvan Alphen (dHvA) effect, in two-dimensional electron systems (2DESs) with spin-orbit interaction (SOI). We focus first on a theoretical modeling by numerically solving the Hamiltonian including the Rashba (R) and Dresselhaus (D) SOI and the Zeeman term in an arbitrarily tilted magnetic field B. We second present experimental data on the SOI-modified quantum oscillations of M(B) in 2DESs formed in the InGaAs/InP and AlGaAs/GaAs material systems for different tilt angles between the 2DES normal and the direction of B. We find pronounced beating patterns in InGaAs/InP that are described quantitatively by assuming a dominant R-SOI except for a distinct frequency anomaly in M present in nearly perpendicular B. In AlGaAs/GaAs, beating patterns occur at large tilt angles. Here, anomalies in the dHvA wave form occur. The findings demonstrate that the understanding of the ground state energy of a 2DES is incomplete when SOI is present. Finally, we predict that the amplitude and anisotropy of specific dHvA oscillations with respect to the in-plane magnetic field component allow one to quantify the magnitude and relative signs of both R-SOI and D-SOI when simultaneously present.Calculated fan chart of Landau levels and oscillatory Fermi energy E F in a 2DES subject to SOI. The beating patterns in E F contain information on the SOI. They manifest itself in a variety of experimentally accessible observables. In this feature article, we focus on the magnetization M as a thermodynamic state variable. The inset sketches a micromechanical cantilever magnetometer used to measure M using the torque τ = M × B.

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“…QDs in materials with strong spin-orbit interaction have important applications in the field of topological superconductivity. They can be used to realize Majorana zero modes in quantum dot chains 10 , and are essential elements for the readout and manipulation of topological qubits 11,12 .InSb is a promising material in this regard, with a high carrier mobility, large g-factor and strong spinorbit interaction [13][14][15][16] . QDs have been extensively studied in InSb nanowires [17][18][19] and, more recently, in InSb nanoflakes 20 .…”

mentioning

confidence: 99%

“…InSb is a promising material in this regard, with a high carrier mobility, large g-factor and strong spinorbit interaction [13][14][15][16] . QDs have been extensively studied in InSb nanowires [17][18][19] and, more recently, in InSb nanoflakes 20 .…”

mentioning

confidence: 99%

Quantum Dots in an InSb Two-Dimensional Electron Gas

Kulesh

Thomas

et al. 2020

Phys. Rev. Applied

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Indium antimonide (InSb) two-dimensional electron gases (2DEGs) have a unique combination of material properties: high electron mobility, strong spin-orbit interaction, large Landé g-factor, and small effective mass. This makes them an attractive platform to explore a variety of mesoscopic phenomena ranging from spintronics to topological superconductivity. However, there exist limited studies of quantum confined systems in these 2DEGs, often attributed to charge instabilities and gate drifts. We overcome this by removing the δ-doping layer from the heterostructure, and induce carriers electrostatically. This allows us to perform the first detailed study of stable gate-defined quantum dots in InSb 2DEGs. We demonstrate two distinct strategies for carrier confinement and study the charge stability of the dots. The small effective mass results in a relatively large single particle spacing, allowing for the observation of an even-odd variation in the addition energy. By tracking the Coulomb oscillations in a parallel magnetic field we determine the ground state spin configuration and show that the large g-factor (∼30) results in a singlet-triplet transition at magnetic fields as low as 0.3 T.Mesoscopic devices can be made in a two-dimensional electron gas (2DEG) using electrical gates to confine charge carriers, thus reducing the degrees of freedom. The extreme case is the zero-dimensional system, a quantum dot (QD). QDs have been used to explore a wide range of quantum phenomena 1-3 , and are emerging as a platform for quantum computing 4-6 and quantum simulations 7-9 . QDs in materials with strong spin-orbit interaction have important applications in the field of topological superconductivity. They can be used to realize Majorana zero modes in quantum dot chains 10 , and are essential elements for the readout and manipulation of topological qubits 11,12 .InSb is a promising material in this regard, with a high carrier mobility, large g-factor and strong spinorbit interaction [13][14][15][16] . QDs have been extensively studied in InSb nanowires [17][18][19] and, more recently, in InSb nanoflakes 20 . However, despite the clear benefits of scalability offered by InSb 2DEGs, experimental reports of confined systems in these quantum wells are scarce 14,21,22 . Thus far, most studies of InSb 2DEGs have been limited to heterostructures where carriers are generated in the quantum well via remote δ-doping layers. Such doped 2DEGs are known to suffer from charge instability and gate drifts, which are particularly detrimental to the study of nanostructures.Here, we show that removal of doping layers enables the realization of highly stable gate-defined quantum dots in InSb 2DEGs. We study two different QD designs on deep and shallow undoped quantum wells. In all measured devices, the charge stability diagrams show welldefined Coulomb diamonds and excited states. We find that the small effective mass of InSb results in a large separation between single-particle levels, enabling the observation of an even-odd periodicity in ...

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Spin and phase coherence lengths inn-InSbquasi-one-dimensional wires

Cited by 29 publications

References 59 publications

Interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy –A review

Interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy –A review

Spin–orbit interaction in the magnetization of two‐dimensional electron systems

Quantum Dots in an InSb Two-Dimensional Electron Gas

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