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Spin-orbit interaction induced anisotropic property in interacting quantum wires.

Cheng F, Zhou G, Chang K - Nanoscale Res Lett (2011)

Bottom Line: : We investigate theoretically the ground state and transport property of electrons in interacting quantum wires (QWs) oriented along different crystallographic directions in (001) and (110) planes in the presence of the Rashba spin-orbit interaction (RSOI) and Dresselhaus SOI (DSOI).The electron ground state can cross over different phases, e.g., spin density wave, charge density wave, singlet superconductivity, and metamagnetism, by changing the strengths of the SOIs and the crystallographic orientation of the QW.The interplay between the SOIs and Coulomb interaction leads to the anisotropic dc transport property of QW which provides us a possible way to detect the strengths of the RSOI and DSOI.PACS numbers: 73.63.Nm, 71.10.Pm, 73.23.-b, 71.70.Ej.

View Article: PubMed Central - HTML - PubMed

Affiliation: SKLSM, Institute of Semiconductors, Chinese Academy of Sciences, P, O, Box 912, Beijing 100083, China. kchang@semi.ac.cn.

ABSTRACT
: We investigate theoretically the ground state and transport property of electrons in interacting quantum wires (QWs) oriented along different crystallographic directions in (001) and (110) planes in the presence of the Rashba spin-orbit interaction (RSOI) and Dresselhaus SOI (DSOI). The electron ground state can cross over different phases, e.g., spin density wave, charge density wave, singlet superconductivity, and metamagnetism, by changing the strengths of the SOIs and the crystallographic orientation of the QW. The interplay between the SOIs and Coulomb interaction leads to the anisotropic dc transport property of QW which provides us a possible way to detect the strengths of the RSOI and DSOI.PACS numbers: 73.63.Nm, 71.10.Pm, 73.23.-b, 71.70.Ej.

No MeSH data available.


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Schematic diagram of semiconductor QW, the constant energy surfaces and the spin orientations of 2DEG. (a) Schematic diagram of semiconductor QW which oriented along the crystallographic direction θ with respect to [100] axis in the crystallographic planes (001), (110), and (111). n is the unit vector along the normal direction of the crystallographic plane. (b) The constant energy surfaces and the spin orientations of 2DEG in (001), (110), and (111) planes.
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Figure 1: Schematic diagram of semiconductor QW, the constant energy surfaces and the spin orientations of 2DEG. (a) Schematic diagram of semiconductor QW which oriented along the crystallographic direction θ with respect to [100] axis in the crystallographic planes (001), (110), and (111). n is the unit vector along the normal direction of the crystallographic plane. (b) The constant energy surfaces and the spin orientations of 2DEG in (001), (110), and (111) planes.

Mentions: The Q1 D QW system is shown schematically in Figure 1a where electrons are confined laterally and move freely along the x-axis. The RSOI can be generated in the region below the top gate, and the DSOI always exists in the conventional zincblende semiconductors lacking the spatial inversion symmetry, e.g., GaAs, InAs, and InSb. The Hamiltonian of noninteracting electrons in a Q1 D QW oriented along different crystallographic directions in (001) plane is [11](1)


Spin-orbit interaction induced anisotropic property in interacting quantum wires.

Cheng F, Zhou G, Chang K - Nanoscale Res Lett (2011)

Schematic diagram of semiconductor QW, the constant energy surfaces and the spin orientations of 2DEG. (a) Schematic diagram of semiconductor QW which oriented along the crystallographic direction θ with respect to [100] axis in the crystallographic planes (001), (110), and (111). n is the unit vector along the normal direction of the crystallographic plane. (b) The constant energy surfaces and the spin orientations of 2DEG in (001), (110), and (111) planes.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211270&req=5

Figure 1: Schematic diagram of semiconductor QW, the constant energy surfaces and the spin orientations of 2DEG. (a) Schematic diagram of semiconductor QW which oriented along the crystallographic direction θ with respect to [100] axis in the crystallographic planes (001), (110), and (111). n is the unit vector along the normal direction of the crystallographic plane. (b) The constant energy surfaces and the spin orientations of 2DEG in (001), (110), and (111) planes.
Mentions: The Q1 D QW system is shown schematically in Figure 1a where electrons are confined laterally and move freely along the x-axis. The RSOI can be generated in the region below the top gate, and the DSOI always exists in the conventional zincblende semiconductors lacking the spatial inversion symmetry, e.g., GaAs, InAs, and InSb. The Hamiltonian of noninteracting electrons in a Q1 D QW oriented along different crystallographic directions in (001) plane is [11](1)

Bottom Line: : We investigate theoretically the ground state and transport property of electrons in interacting quantum wires (QWs) oriented along different crystallographic directions in (001) and (110) planes in the presence of the Rashba spin-orbit interaction (RSOI) and Dresselhaus SOI (DSOI).The electron ground state can cross over different phases, e.g., spin density wave, charge density wave, singlet superconductivity, and metamagnetism, by changing the strengths of the SOIs and the crystallographic orientation of the QW.The interplay between the SOIs and Coulomb interaction leads to the anisotropic dc transport property of QW which provides us a possible way to detect the strengths of the RSOI and DSOI.PACS numbers: 73.63.Nm, 71.10.Pm, 73.23.-b, 71.70.Ej.

View Article: PubMed Central - HTML - PubMed

Affiliation: SKLSM, Institute of Semiconductors, Chinese Academy of Sciences, P, O, Box 912, Beijing 100083, China. kchang@semi.ac.cn.

ABSTRACT
: We investigate theoretically the ground state and transport property of electrons in interacting quantum wires (QWs) oriented along different crystallographic directions in (001) and (110) planes in the presence of the Rashba spin-orbit interaction (RSOI) and Dresselhaus SOI (DSOI). The electron ground state can cross over different phases, e.g., spin density wave, charge density wave, singlet superconductivity, and metamagnetism, by changing the strengths of the SOIs and the crystallographic orientation of the QW. The interplay between the SOIs and Coulomb interaction leads to the anisotropic dc transport property of QW which provides us a possible way to detect the strengths of the RSOI and DSOI.PACS numbers: 73.63.Nm, 71.10.Pm, 73.23.-b, 71.70.Ej.

No MeSH data available.


Related in: MedlinePlus