TUNNELING INTO FERROMAGNETIC QUANTUM HALL STATES : OBSERVATION OF A SPIN BOTTLENECK

We explore the characteristics of equilibrium tunneling of electrons from a 3D electrode into a high mobility 2D electron system. For most noninteger filling factors, we find that tunneling can be characterized by a single, well-defined tunneling rate. However, for spin-polarized quantum Hall states (n 1 ,3 , and13) tunneling occurs at two distinct rates that differ by up to 2 orders of magnitude. The dependence of the two rates on temperature and tunnel barrier thickness suggests that slow in-plane spin relaxation creates a bottleneck for tunneling of electrons.

• Publication year

  1999

• Venue

  Physical Review Letters

• Publication date

  1999-05-26

• Fields of study

  Physics

• Identifiers
  DOI 10.1103/PhysRevLett.83.3258arXiv cond-mat/9905371
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

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• No concepts are published for this paper.

• No references are available for this paper.

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