Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-09-09
Phys. Rev. Lett. 106, 186402 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
4+epsilon pages, 4 figures
Scientific paper
10.1103/PhysRevLett.106.186402
In addition to Anderson and Mott localization, intrinsic phase separation has long been advocated as the third fundamental mechanism controlling the doping-driven metal-insulator transitions. In electronic system, where charge neutrality precludes global phase separation, it may lead to various inhomogeneous states and dramaticahttp://arxiv.org/submit/215787/metadata arXiv Submission metadatally affect transport. Here we theoretically predict the precise experimental signatures of such phase-separation-driven metal-insulator transitions. We show that anomalous transport is expected in an intermediate regime around the transition, displaying very strong temperature and magnetic field dependence, but very weak density dependence. Our predictions find striking agreement with recent experiments on Mn-doped CdTe quantum wells, a system where we identify the microscopic origin for intrinsic phase separation.
Dobrosavljevic Vladimir
Terletska Hanna
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