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(Cd,Zn,Mg)Te-based microcavity on MgTe sacrificial buffer: Growth, lift-off, and transmission studies of polaritons

  • B. Seredyński
  • , M. Król
  • , P. Starzyk
  • , R. Mirek
  • , M. Ściesiek
  • , K. Sobczak
  • , J. Borysiuk
  • , D. Stephan
  • , J. G. Rousset
  • , J. Szczytko
  • , B. Piȩtka
  • , W. Pacuski

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Opaque substrates precluded, so far, transmission studies of II-VI semiconductor microcavities. This work presents the design and molecular beam epitaxy growth of semimagnetic (Cd,Zn,Mn)Te quantum wells embedded into a (Cd,Zn,Mg)Te-based microcavity, which can be easily separated from the GaAs substrate. Our lift-off process relies on the use of a MgTe sacrificial layer which stratifies in contact with water. This allowed us to achieve a II-VI microcavity prepared for transmission measurements. We evidence the strong light-matter coupling regime using photoluminescence, reflectivity, and transmission measurements at the same spot on the sample. By comparing a series of reflectance spectra before and after lift-off, we prove that the microcavity quality remains high. Thanks to Mn content in quantum wells we show the giant Zeeman splitting of semimagnetic exciton-polaritons in our transmitting structure.

Original languageEnglish
Article number043406
JournalPhysical Review Materials
Volume2
Issue number4
DOIs
Publication statusPublished - 26 Apr 2018
Externally publishedYes

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