Pillarisetty R, Noh H, Tutuc E, Poortere EPD, Tsui DC, Shayegan M. Spin polarization dependence of the coulomb drag at large r(s).
PHYSICAL REVIEW LETTERS 2005;
94:016807. [PMID:
15698117 DOI:
10.1103/physrevlett.94.016807]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2004] [Indexed: 05/24/2023]
Abstract
We find that the temperature dependence of the drag resistivity between two dilute two-dimensional hole systems exhibits an unusual dependence upon spin polarization. Our main observation is that near the apparent metal-insulator transition, the temperature dependence of the drag, given by Talpha, weakens significantly with the application of a parallel magnetic field (B(||)), with alpha saturating at half its zero field value for B(||)>B(*), where B(*) is the polarization field.
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