Rashba and Dresselhaus spin-orbit interaction strength in GaAs/GaAlAs heterojunctions

Sandoval, M. A. Toloza; Silva, A. Ferreira da; Silva, E.A. de Andrada e; Rocca, G. C. La

doi:10.1016/j.phpro.2012.03.678

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…In presence of magnetic field ( ), an induced term ( , ) is added which result in non-vanishing anomalous velocity contribution to the total current. It can said that the presence of Rashba-Dresselhaus spin-orbit interaction (which is associated with the non-zero Berry curvature) is responsible for the non-trivial dependence of ( , ), which depends on the orientation of and resulting in the anomalous velocity contribution to the MR [42][43][44][45]. The above statement can be understood on the basis that with an increase in magnetic field, parallel alignment among magnetic moments increases and it leads to the enhancement of Zeeman energy.…”

Section: Dresselhaus Spin-orbit Interactionsmentioning

confidence: 99%

Spin–lattice relaxation phenomena in the magnetic state of a suggested Weyl semimetal CeAlGe

Singh

Mukherjee

2020

Philosophical Magazine

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In this work we report the results of DC susceptibility, AC susceptibility and related technique, resistivity, transverse and longitudinal magnetoresistance and heat capacity on polycrystalline magnetic semimetal CeAlGe. This compound undergoes antiferromagnetic type ordering around 5.2 K (T 1 ). Under application of external magnetic fields, parallel alignment of magnetic moments is favored, above 0.5 Tesla. At low field and temperature, frequency and AC field amplitude response of AC susceptibility indicate to the presence of spin-lattice relaxation phenomena. The observation of spin-lattice interaction suggests to the presence of Rashba-Dresselhaus spin-orbit interaction which is associated with inversion and time reversal symmetry breaking. Additionally, presence of negative and asymmetric longitudinal magnetoresistance indicates anomalous velocity contribution to the magnetoresistance due to Rashba-Dresselhaus spin-orbit interaction which is further studied by heat capacity.

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Section: Dresselhaus Spin-orbit Interactionsmentioning

confidence: 99%

Spin–lattice relaxation phenomena in the magnetic state of a suggested Weyl semimetal CeAlGe

Singh

Mukherjee

2020

Philosophical Magazine

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“…20,21 Fascinatingly, in association with inversion asymmetry, SOC induces various exotic phenomena like topological surface states, 22 persistent spin textures [23][24][25] and Rashba-Dresselhaus (RD) effects. [26][27][28][29][30][31][32] In case of crystals where the center of inversion is not present, there is a finite gradient of potential and hence a Lorentz-transformed magnetic field acts on relativistically moving electrons. Therefore, at non-timereversal-invariant k-points, the degenerate bands split into states of opposite spins, lifting Kramers degeneracy.…”

Section: Introductionmentioning

confidence: 99%

Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI₃

Arya,

Bhumla,

Sheoran

et al. 2024

Phys. Chem. Chem. Phys.

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“…13,14 In addition to this, because of the presence of heavy element Pb, there is a large spin-orbit coupling (SOC) which has an influence on the band structure of these lead halide perovskites. 15,16 Fascinatingly, SOC in association with inversion asymmetry induces various exotic phenomena like topological surface states 17 , persistent spin textures 18,19 and Rashba-Dresselhaus (RD) effects [20][21][22][23][24] . In case of crystals where center of inversion is not present, there is a finite gradient of potential and hence a Lorentz transformed magnetic field acts on relativistically moving electron.…”

mentioning

confidence: 99%

Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI$_3$

Arya¹,

Bhumla²,

Sajjan³

et al. 2022

Preprint

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Inorganic-organic lead halide perovskites, particularly methylammonium lead halide (MAPbI 3 ) perovskite, is perceived to be a promising material for optoelectronics and spintronics. However, lead toxicity and instability under air and moisture restrict its practical uses.Hence, it is essential to reduce lead extent by substituting appropriate alternatives and making a hybrid perovskite. We substitute Sn and Ge in cubic MAPbI 3 and compare various properties of hybrid perovskites by employing state-of-the-art first-principles-based methodologies, viz., density functional theory (DFT) with semilocal and hybrid functional (HSE06) and generalized gradient approximation (PBE) combined with spin-orbit coupling (SOC). We mainly study the Rashba-Dresselhaus (RD) effect which occurs here due to two major mechanisms breaking inversion symmetry i.e., static and dynamic, and the presence of heavy elements contributing to significant SOC. We find non-negligible spin-splitting effects in the conduction band minimum (CBm) and valence band maximum (VBM) for hybrid perovskites. For a deeper understanding of the observed spin-splitting, the spin textures are analyzed and Rashba coefficients are calculated. We find that Dresselhaus effect comes into picture in substituted hybrids in addition to the usual Rashba effect observed in pristine compound. Further, a significant value of Rashba coefficient was observed in substituted hybrid perovskites. We also observe that the strength of Rashba spin-splitting can be substantially tuned on application of uniaxial strain (±5%). More interestingly, we notice that some of the hybrids are mechanically stable and ductile. Hence these hybrid perovskites can prove to be potent for perovskite-based spintronic applications.

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Rashba and Dresselhaus spin-orbit interaction strength in GaAs/GaAlAs heterojunctions

Cited by 11 publications

References 6 publications

Spin–lattice relaxation phenomena in the magnetic state of a suggested Weyl semimetal CeAlGe

Spin–lattice relaxation phenomena in the magnetic state of a suggested Weyl semimetal CeAlGe

Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI₃

Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI$_3$

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Rashba and Dresselhaus spin-orbit interaction strength in GaAs/GaAlAs heterojunctions

Cited by 11 publications

References 6 publications

Spin–lattice relaxation phenomena in the magnetic state of a suggested Weyl semimetal CeAlGe

Spin–lattice relaxation phenomena in the magnetic state of a suggested Weyl semimetal CeAlGe

Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI3

Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI$_3$

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Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI₃