InAs-AlSb quantum wells in tilted magnetic fields

Details InAs-AlSb quantum wells in tilted magnetic fields InAs-AlSb quantum wells in tilted magnetic fields

2000-05-18

arxiv.org/abs/cond-mat/0005291v1

Phys. Rev. B 61, 13045 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.61.13045

InAs-AlSb quantum wells are investigated by transport experiments in magnetic fields tilted with respect to the sample normal. Using the coincidence method we find for magnetic fields up to 28 T that the spin splitting can be as large as 5 times the Landau splitting. We find a value of the g-factor of about 13. For small even-integer filling factors the corresponding minima in the Shubnikov-de Haas oscillations cannot be tuned into maxima for arbitrary tilt angles. This indicates the anti-crossing of neighboring Landau and spin levels. Furthermore we find for particular tilt angles a crossover from even-integer dominated Shubnikov-de Haas minima to odd-integer minima as a function of magnetic field.

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