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Title: Electric field control of chirality

Journal Article · · Science Advances
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5];  [6]; ORCiD logo [5];  [1]; ORCiD logo [1];  [4]; ORCiD logo [4];  [4]; ORCiD logo [7]; ORCiD logo [3];  [8]; ORCiD logo [8]; ORCiD logo [4]; ORCiD logo [4]; ORCiD logo [1]; ORCiD logo [3] more »; ORCiD logo [2]; ORCiD logo [1] « less
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of Colorado, Boulder, CO (United States)
  3. Univ. of Cantabria, Santander, Cantabria (Spain)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Univ. of California, Berkeley, CA (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Zhejiang Univ., Hangzhou (China)
  8. Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Diamond Light Source, Ltd.

Polar textures have attracted substantial attention in recent years as a promising analog to spin-based textures in ferromagnets. Here, using optical second-harmonic generation–based circular dichroism, we demonstrate deterministic and reversible control of chirality over mesoscale regions in ferroelectric vortices using an applied electric field. The microscopic origins of the chirality, the pathway during the switching, and the mechanism for electric field control are described theoretically via phase-field modeling and second-principles simulations, and experimentally by examination of the microscopic response of the vortices under an applied field. The emergence of chirality from the combination of nonchiral materials and subsequent control of the handedness with an electric field has far-reaching implications for new electronics based on chirality as a field-controllable order parameter.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Spanish Ministry of Universities; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
AC02-05CH11231; SC0008807
OSTI ID:
1840958
Journal Information:
Science Advances, Journal Name: Science Advances Journal Issue: 1 Vol. 8; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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