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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.


Related in: MedlinePlus

Phase diagram of the ground state of Q1 D electron gas in a QW embedded in (110) plane. The same as Figure 2, but for a QW embedded in (110) plane.
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Figure 3: Phase diagram of the ground state of Q1 D electron gas in a QW embedded in (110) plane. The same as Figure 2, but for a QW embedded in (110) plane.

Mentions: The phase diagram of the ground state for the QW embedded in (110) plane is very different from that of the QW in (001) plane for the same parameters vρ, vσ and Kσ. Tuning the strength of the RSOI at a fixed strength of the DSOI, the ground state can also transit from CDW to SDW, but in very narrow region in the Kρ - θ space (see Figure 3). This is because the anisotropy is weaker compared to that of the QW in (001) plane.


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

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

Phase diagram of the ground state of Q1 D electron gas in a QW embedded in (110) plane. The same as Figure 2, but for a QW embedded in (110) plane.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 3: Phase diagram of the ground state of Q1 D electron gas in a QW embedded in (110) plane. The same as Figure 2, but for a QW embedded in (110) plane.
Mentions: The phase diagram of the ground state for the QW embedded in (110) plane is very different from that of the QW in (001) plane for the same parameters vρ, vσ and Kσ. Tuning the strength of the RSOI at a fixed strength of the DSOI, the ground state can also transit from CDW to SDW, but in very narrow region in the Kρ - θ space (see Figure 3). This is because the anisotropy is weaker compared to that of the QW in (001) plane.

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