{
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  "authors": [
    {
      "raw_name": "Chong-Sun Chu", 
      "affiliations": [
        {
          "country": "Taiwan", 
          "value": "Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan and Center for Theory and Computation, National Tsing-Hua University, Hsinchu 30013, Taiwan"
        }
      ], 
      "surname": "Chu", 
      "given_names": "Chong-Sun", 
      "full_name": "Chu, Chong-Sun"
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    {
      "raw_name": "Chun-Hei Leung", 
      "affiliations": [
        {
          "country": "Taiwan", 
          "value": "Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan and Center for Theory and Computation, National Tsing-Hua University, Hsinchu 30013, Taiwan"
        }
      ], 
      "surname": "Leung", 
      "given_names": "Chun-Hei", 
      "full_name": "Leung, Chun-Hei"
    }
  ], 
  "titles": [
    {
      "source": "APS", 
      "title": "Induced Quantized Spin Current in Vacuum"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevLett.127.111601"
    }
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  "publication_info": [
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      "journal_volume": "127", 
      "journal_title": "Physical Review Letters", 
      "material": "article", 
      "journal_issue": "11", 
      "year": 2021
    }
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    {
      "statement": "Published by the American Physical Society", 
      "year": "2021"
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  "abstracts": [
    {
      "source": "APS", 
      "value": "We uncover a fundamental effect of the QED vacuum in an external electromagnetic (EM) field. We show that the quantized vacuum of electrons is spin polarized by the EM field and manifests as a vacuum spin current. An experiment is proposed to measure the spin torque exerted by the spin current by measuring the twisted angle of the director axis of a nematic liquid crystal."
    }
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