Quantum Hall effect in a bulk crystal
S. T. HannahsDepartment of Physics, Boston University, Boston, Massachusetts 02215J. S. BrooksDepartment of Physics, Boston University, Boston, Massachusetts 02215W. KangDepartment of Physics, Princeton University, Princeton, New Jersey 08544 and Exxon, Research and Engineering Co., Route 22 E, Annadale, New Jersey 08801Li-Chi ChiangDepartment of Physics, Princeton University, Princeton, New Jersey 08544 and Exxon, Research and Engineering Co., Route 22 E, Annadale, New Jersey 08801P. M. ChaikinDepartment of Physics, Princeton University, Princeton, New Jersey 08544 and Exxon, Research and Engineering Co., Route 22 E, Annadale, New Jersey 08801
1989en
ABI
Annotatsiya
We have observed remarkably flat Hall plateaus (step ratios . . .5:4:3:2:1) with correspondingly sharp peaks in the magnetoresistance in the Bechgaard salt (TMTSF${)}_{2}$${\mathrm{PF}}_{6}$. This highly anisotropic conductor exhibits magnetic-field-induced spin-density-wave (FISDW) states at low temperatures and pressures above about 6 kbar. Unlike previous measurements on similar materials we find almost complete confirmation of the theoretical model for the FISDW transitions, their quantum Hall effects, and the predicted high-field semiconducting state.
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