Anisotropic spin dynamics in semiconductor narrow wires from the interplay between spin-orbit interaction and planar magnetic field

Sonehara, Junpei; Kammermeier, Michael; Sato, Dai; Iizasa, Daisuke; Zülicke, U.; Karube, Shutaro; Nitta, Junsaku; Kohda, Makoto

doi:10.1103/physrevb.105.094434

Cited by 3 publications

(2 citation statements)

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“…Clearly, the 𝒑-cubic fields introduce oscillations of the spin polarization during the spin-transport and may cause, in conjunction with disorder, an additional spin dephasing, which are detrimental for instance to the robustness of realistic spin-transistors [26,27]. Moreover, the recent theoretical and experimental studies have put forward a significant role of the anisotropy on the spin dynamics in semiconductor narrow wires which are induced by the interaction between the linear and cubic-Deresselhaus spin-orbit fields and the Larmor precession under an in-plane magnetic field [28,29]. Very recent theoretical studies have emphasized a complex picture that emerges once we consider the dominant cubic-Deresselhaus SOC by exploring the superconducting correlations, the support of Majorana bound states relevant for superconducting spintronics [30].…”

Section: Introductionmentioning

confidence: 99%

Impact of the p-cubic Dresselhaus term on the spin Hall effect

Santana-Suárez¹,

Mireles²

2023

Condens. Matter Phys.

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It is well known that the Dresselhaus spin-orbit coupling (SOC) in semiconductor two dimensional electron gases (2DEGs) possesses both linear and cubic in momentum contributions. Nevertheless, the latter is usually neglected in most theoretical studies. However, recent Kerr rotation experiments have revealed a significant enhancement of the cubic Dresselhaus interaction by increasing the drift velocities in 2DEGs hosted in GaAs quantum wells. Here, we present a study of the optical spin Hall conductivity in 2DEGs under the simultaneous presence of Rashba and (linear plus cubic) Dresselhaus SOC. The work was done within the Kubo formalism in linear response. We show that the coexistence of the Rashba and cubic Dresselhaus SOC in 2DEGs promotes a strong anisotropy of the band spin splitting which in turn leads to a very characteristic frequency dependence of the spin Hall conductivity. We find that the spin Hall conductivity response could be very sensible to sizeable cubic-Dresselhaus coupling strength. This may be of relevance for the optical control of spin currents in 2DEGs with non-negligible cubic-Dresselhaus SOC.

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Section: Introductionmentioning

confidence: 99%

Impact of the p-cubic Dresselhaus term on the spin Hall effect

Santana-Suárez¹,

Mireles²

2023

Condens. Matter Phys.

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“…Rashba SOI, which is induced by structural inversion symmetry, overshadows other spin-orbit interactions for narrow gap semiconductors and can be adjusted using external gate voltage. The presence of Rashba in quantum wires and dots in several different environments has been investigated extensively [19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Quantum wire material modulated geometrical factors and electronic band structure within the presence of spin-orbit interaction

Priyanka

Sharma

2023

Quantum Optics and Photon Counting 2023

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In this study, we focus on the influence of quantum wire material on the geometrical factors and electronic energy band structure The system is defined by parabolic confinement which is exposed in the perpendicular magnetic field and Rashba spin-orbit interaction The dependence of the energy dispersion on the material of quantum wire has been examined Numerical results illustrate that the different materials of quantum wire cause the change in geometrical factors and shifting in the energy dispersion Moreover, the oddity in the physical parameters and energy subbands brings out the shift in the optical properties of quantum wire.

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