Experiments on Novel Phases of 2D Electrons in Advanced Semiconductor Structures
Abstract
Work was initiated to systematically investigate the physical properties of the newly identified quantum phases of two-dimensional (2D) electrons in extremely high mobility GaAs/Al(x)Gal(-x)As heterostructures, using microwave spectroscopy, in low temperatures and at high magnetic fields. We have completed four experiments investigating: (1) melting of the 2D electron crystalline solid, (2) pinning of the bilayer crystals with pseudospin, (3) pinning of the electron liquid crystal, and (4) the skyrmion crystal to Wigner crystal cross-over. In addition we have successfully constructed a mechanical rotator to tilt the 2D electron sample which is mounted in the 10GHz microwave probe at 35 mK in a 45T magnet. This rotator is made available to all experimenters using the User Facility of the National High Magnetic Field Laboratory in Tallahassee, Florida.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 06, 2008
- Accession Number
- ADA484890
Entities
People
- Daniel C. Tsui
Organizations
- Princeton University