Optical Signatures from Magnetic 2-D Electron Gases in High Magnetic Fields to 60 Tesla

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We present experiments in the 60 Tesla Long-Pulse magnet at the Los Alamos National High Magnetic Field Lab (NHMFL) focusing on the high-field, low temperature photoluminescence (PL) from modulation-doped ZnSe/Zn(Cd,Mn)Se single quantum wells. High-speed charge-coupled array detectors and the long (2 second) duration of the magnet pulse permit continuous acquisition of optical spectra throughout a single magnet shot. High-field PL studies of the magnetic 2D electron gases at temperatures down to 350mK reveal clear intensity oscillations corresponding to integer quantum Hall filling factors, from which we determine the density of the electron gas. At very high magnetic fields, steps in ... continued below

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Crooker, S.A.; Kikkawa, J.M.; Awschalom, D.D.; Smorchikova, I.P. & Samarth, N. November 8, 1998.

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We present experiments in the 60 Tesla Long-Pulse magnet at the Los Alamos National High Magnetic Field Lab (NHMFL) focusing on the high-field, low temperature photoluminescence (PL) from modulation-doped ZnSe/Zn(Cd,Mn)Se single quantum wells. High-speed charge-coupled array detectors and the long (2 second) duration of the magnet pulse permit continuous acquisition of optical spectra throughout a single magnet shot. High-field PL studies of the magnetic 2D electron gases at temperatures down to 350mK reveal clear intensity oscillations corresponding to integer quantum Hall filling factors, from which we determine the density of the electron gas. At very high magnetic fields, steps in the PL energy are observed which correspond to the partial unlocking of antiferromagnetically bound pairs of Mn<sup>2+</sup> spins.

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Medium: P; Size: vp.

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OSTI as DE00760140

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  • Conference on Magnetism and Magnetic Materials, Miami, FL (US), 11/08/1998--11/11/1998

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  • Report No.: LA-UR-98-4115
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 760140
  • Archival Resource Key: ark:/67531/metadc716631

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  • November 8, 1998

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  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 29, 2016, 6:44 p.m.

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Crooker, S.A.; Kikkawa, J.M.; Awschalom, D.D.; Smorchikova, I.P. & Samarth, N. Optical Signatures from Magnetic 2-D Electron Gases in High Magnetic Fields to 60 Tesla, article, November 8, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc716631/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.