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Vortex Domain Walls in Ferroelectrics

Journal Article · · Nano Letters
 [1];  [2];  [3];  [2];  [4];  [5];  [6];  [7];  [7]
  1. Zhejiang Univ., Hangzhou (China); Penn State University
  2. Univ. of California, Berkeley, CA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Zhejiang Univ., Hangzhou (China)
  5. Univ. of Cantabria, Santander, Cantabria (Spain)
  6. Pennsylvania State Univ., University Park, PA (United States)
  7. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Controlling the domain formation in ferroelectric materials at the nanoscale is a fertile ground to explore emergent phenomena and their technological prospects. For example, charged ferroelectric domain walls in BiFeO3 and ErMnO3 exhibit significantly enhanced conductivity which could serve as the foundation for next-generation circuits. In this work, we describe a concept in which polar vortices perform the same role as a ferroelectric domain wall in classical domain structures with the key difference being that the polar vortices can accommodate charged (i.e., head-to-head and tail-to-tail) domains, for example, in ferroelectric PbTiO3/dielectric SrTiO3 superlattices. Such a vortex domain wall structure can be manipulated in a reversible fashion under an external applied field.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
Grant/Contract Number:
AC02-05CH11231; SC0012375; SC0020145
OSTI ID:
1806304
Alternate ID(s):
OSTI ID: 1806307
OSTI ID: 1840942
OSTI ID: 1880840
Journal Information:
Nano Letters, Journal Name: Nano Letters Journal Issue: 8 Vol. 21; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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