• Defect-Enhanced Polarization Switching in the Improper Ferroelectric LuFeO3 

      Barrozo, Petrucio; Småbråten, Didrik Rene; Tang, Yun-Long; Prasad, Bhagwati; Saremi, Sahar; Ozgur, Rustem; Thakare, Vishal; Steinhardt, Rachel A.; Holtz, Megan, E.; Stoica, Vladimir Alexandru; Martin, Lane W.; Schlom, Darrel G.; Selbach, Sverre Magnus; Ramesh, Ramamoorthy (Peer reviewed; Journal article, 2020)
      Results of switching behavior of the improper ferroelectric LuFeO3 are presented. Using a model set of films prepared under controlled chemical and growth‐rate conditions, it is shown that defects can reduce the quasi‐static ...
    • Electrical half-wave rectification at ferroelectric domain walls 

      Schaab, Jakob; Skjærvø, Sandra Helen; Krohns, Stephan; Dai, Xiaoyu; Holtz, Megan, E.; Cano, Andrés; Lilienblum, Martin; Yan, Zewu; Bourret, Edith; Muller, David A.; Fiebig, Manfred; Selbach, Sverre Magnus; Meier, Dennis (Journal article; Peer reviewed, 2018)
      Domain walls in ferroelectric semiconductors show promise as multifunctional two-dimensional elements for next-generation nanotechnology. Electric fields, for example, can control the direct-current resistance and reversibly ...
    • Functional electronic inversion layers at ferroelectric domain walls 

      Mundy, Julia; Schaab, Jakob; Kumagai, Yu; Cano, Andres; Stengel, Massimiliano; Krug, Ingo P.; Gottlob, Daniel G.; Doganay, Hattice; Holtz, Megan, E.; Held, Rainer; Yan, Zewu; Bourret, Edith; Schneider, Claus M.; Schlom, Darrel G.; Muller, David A.; Ramesh, Ramamoorthy; Spaldin, Nicola A.; Meier, Dennis Gerhard (Journal article; Peer reviewed, 2017)
      Ferroelectric domain walls hold great promise as functional two-dimensional materials because of their unusual electronic properties. Particularly intriguing are the so-called charged walls where a polarity mismatch causes ...
    • Measuring ferroelectric order parameters at domain walls and vortices in hexagonal manganites with atomic resolution STEM 

      Holtz, Megan, E.; Shapovalov, Konstantin; Mundy, Julia; Chang, C. S.; Meier, Dennis; Cano, Andrés; Muller, David A. (Journal article; Peer reviewed, 2017)
    • Topological defects in hexagonal manganites - Inner structure and emergent electrostatics 

      Holtz, Megan, E.; Shapovalov, Konstantin; Mundy, Julia; Chang, C. S.; Yan, Zewu; Bourret, Edith; Muller, David A.; Meier, Dennis; Cano, Andrés (Journal article; Peer reviewed, 2017)
      Diverse topological defects arise in hexagonal manganites, such as ferroelectric vortices, as well as neutral and charged domain walls. The topological defects are intriguing because their low symmetry enables unusual ...