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Title: Full momentum- and energy-resolved spectral function of a 2D electronic system

Abstract

The single-particle spectral function measures the density of electronic states in a material as a function of both momentum and energy, providing central insights into strongly correlated electron phenomena. Here we demonstrate a high-resolution method for measuring the full momentum- and energy-resolved electronic spectral function of a two-dimensional (2D) electronic system embedded in a semiconductor. The technique remains operational in the presence of large externally applied magnetic fields and functions even for electronic systems with zero electrical conductivity or with zero electron density. Using the technique on a prototypical 2D system, a GaAs quantum well, we uncover signatures of many-body effects involving electron-phonon interactions, plasmons, polarons, and a phonon analog of the vacuum Rabi splitting in atomic systems.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [2];  [2]; ORCiD logo [1]
  1. Department of Physics, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.
  2. Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA.
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1460923
Grant/Contract Number:  
award294935; FG02-08ER46514
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 358 Journal Issue: 6365; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English

Citation Formats

Jang, Joonho, Yoo, Heun Mo, Pfeiffer, L. N., West, K. W., Baldwin, K. W., and Ashoori, Raymond C. Full momentum- and energy-resolved spectral function of a 2D electronic system. United States: N. p., 2017. Web. doi:10.1126/science.aam7073.
Jang, Joonho, Yoo, Heun Mo, Pfeiffer, L. N., West, K. W., Baldwin, K. W., & Ashoori, Raymond C. Full momentum- and energy-resolved spectral function of a 2D electronic system. United States. doi:10.1126/science.aam7073.
Jang, Joonho, Yoo, Heun Mo, Pfeiffer, L. N., West, K. W., Baldwin, K. W., and Ashoori, Raymond C. Thu . "Full momentum- and energy-resolved spectral function of a 2D electronic system". United States. doi:10.1126/science.aam7073.
@article{osti_1460923,
title = {Full momentum- and energy-resolved spectral function of a 2D electronic system},
author = {Jang, Joonho and Yoo, Heun Mo and Pfeiffer, L. N. and West, K. W. and Baldwin, K. W. and Ashoori, Raymond C.},
abstractNote = {The single-particle spectral function measures the density of electronic states in a material as a function of both momentum and energy, providing central insights into strongly correlated electron phenomena. Here we demonstrate a high-resolution method for measuring the full momentum- and energy-resolved electronic spectral function of a two-dimensional (2D) electronic system embedded in a semiconductor. The technique remains operational in the presence of large externally applied magnetic fields and functions even for electronic systems with zero electrical conductivity or with zero electron density. Using the technique on a prototypical 2D system, a GaAs quantum well, we uncover signatures of many-body effects involving electron-phonon interactions, plasmons, polarons, and a phonon analog of the vacuum Rabi splitting in atomic systems.},
doi = {10.1126/science.aam7073},
journal = {Science},
number = 6365,
volume = 358,
place = {United States},
year = {2017},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aam7073

Citation Metrics:
Cited by: 4 works
Citation information provided by
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