Phys. Rev. Lett. 94, 016807 (2005) [4 pages]Spin Polarization Dependence of the Coulomb Drag at Large rsReceived 1 July 2004; published 11 January 2005 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 Tα, weakens significantly with the application of a parallel magnetic field (B||), with α saturating at half its zero field value for B||>B*, where B* is the polarization field. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.016807
DOI:
10.1103/PhysRevLett.94.016807
PACS:
73.40.–c, 71.30.+h, 73.21.Ac
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