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  Colloquium: Physical properties of group-IV monochalcogenide monolayers

Barraza-Lopez, S., Fregoso, B. M., Villanova, J. W., Parkin, S. S. P., & Chang, K. (2021). Colloquium: Physical properties of group-IV monochalcogenide monolayers. Reviews of Modern Physics, 93(1): 011001. doi:10.1103/RevModPhys.93.011001.

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RevModPhys.93.011001 (Publisher version), 76KB
 
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https://doi.org/10.1103/RevModPhys.93.011001 (Publisher version)
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Barraza-Lopez, Salvador1, Author
Fregoso, Benjamin M.1, Author
Villanova, John W.1, Author
Parkin, Stuart S. P.2, Author              
Chang, Kai1, Author
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1external, ou_persistent22              
2Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              

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 Abstract: The state-of-the-art knowledge of ferroelectric and ferroelastic group-IV monochalcogenide monolayers is surveyed. These semiconductors feature remarkable structural and mechanical properties, such as a switchable in-plane spontaneous polarization, soft elastic constants, structural degeneracies, and thermally driven two-dimensional structural transformations. Additionally, these 2D materials display selective valley excitations, valley Hall effects, and persistent spin helix behavior. After a description of their Raman spectra, a discussion of optical properties arising from their lack of centrosymmetry (such as an unusually strong second-harmonic intensity, large bulk photovoltaic effects, photostriction, and tunable exciton binding energies) is provided as well. The physical properties observed in these materials originate from (correlate with) their intrinsic and switchable electric polarization, and the physical behavior hereby reviewed could be of use in nonvolatile memory, valleytronic, spintronic, and optoelectronic devices: these 2D multiferroics enrich and diversify the 2D material toolbox.

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 Dates: 20212021-03-10
 Publication Status: Published in print
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Title: Reviews of Modern Physics
  Other : Rev. Modern Phys.
Source Genre: Journal
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Publ. Info: Minneapolis : American Physical Society
Pages: - Volume / Issue: 93 (1) Sequence Number: 011001 Start / End Page: - Identifier: ISSN: 0034-6861
CoNE: https://pure.mpg.de/cone/journals/resource/954925438533