|国家预印本平台
首页|Many-particle hybridization of optical transitions from zero-mode Landau levels in HgTe quantum wells

Many-particle hybridization of optical transitions from zero-mode Landau levels in HgTe quantum wells

Many-particle hybridization of optical transitions from zero-mode Landau levels in HgTe quantum wells

来源:Arxiv_logoArxiv
英文摘要

We present far-infrared magnetospectroscopy measurements of a HgTe quantum well in the inverted band structure regime over the temperature range of 2 to 60 K. The particularly low electron concentration enables us to probe the temperature evolution of all four possible optical transitions originating from zero-mode Landau levels, which are split off from the edges of the electron-like and hole-like bands. By analyzing their resonance energies, we reveal an unambiguous breakdown of the single-particle picture indicating that the explanation of the anticrossing of zero-mode Landau levels in terms of bulk and interface inversion asymmetries is insufficient. Instead, the observed behavior of the optical transitions is well explained by their hybridization driven by electron-electron interaction. We emphasize that our proposed many-particle mechanism is intrinsic to HgTe quantum wells of any crystallographic orientation, including (110) and (111) wells, where bulk and interface inversion asymmetries do not induce the anticrossing of zero-mode Landau levels.

S. Ruffenach、S. S. Krishtopenko、A. V. Ikonnikov、C. Consejo、J. Torres、X. Baudry、P. Ballet、B. Jouault、F. Teppe

物理学

S. Ruffenach,S. S. Krishtopenko,A. V. Ikonnikov,C. Consejo,J. Torres,X. Baudry,P. Ballet,B. Jouault,F. Teppe.Many-particle hybridization of optical transitions from zero-mode Landau levels in HgTe quantum wells[EB/OL].(2025-07-01)[2025-07-16].https://arxiv.org/abs/2507.00565.点此复制

评论