Coexistence of weak localization and a metallic phase in Si/SiGe quantum wells

Article

关键词: 2-DIMENSIONAL ELECTRON-GAS;    INSULATOR-TRANSITION;    2 DIMENSIONS;    MAGNETIC-FIELD;    SCALING THEORY;    HOLE GAS;    B=0;    SYSTEM;    SUPERCONDUCTIVITY;    SYMMETRY;   

DOI  :  10.1103/PhysRevB.61.R5082

来源: SCIE

【 摘 要 】

Magnetoresistivity measurements on p-type Si/SiGe quantum wells reveal the coexistence of a metallic behavior and weak localization. Deep in the metallic regime, pronounced weak localization reduces the metallic behavior around zero magnetic field without destroying it. In the insulating phase, a positive magnetoresistivity emerges close to B=0, possibly related to spin-orbit interactions.

【 授权许可】

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