Publications
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X Author: P Shafer
2020
Cheema, S.S, D Kwon, N Shanker, R. dos Reis, S.-L Hsu, J Xiao, H Zhang, R Wagner, A Datar, M.R McCarter, C.R Serrao, A.K Yadav, G Karbasian, C.-H Hsu, A.J Tan, L.-C Wang, V Thakare, X Zhang, A Mehta, E Karapetrova, R.V Chopdekar, P Shafer, E Arenholz, C Hu, R Proksch, Ramamoorthy Ramesh, J Ciston, and S Salahuddin."Enhanced ferroelectricity in ultrathin films grown directly on silicon."Nature
580 (2020) 478-482. DOI
2019
Das, S, Y.L Tang, Z Hong, M.A.P Gonçalves, M.R McCarter, C Klewe, K.X Nguyen, F Gómez-Ortiz, P Shafer, E Arenholz, V.A Stoica, S.-L Hsu, B Wang, C Ophus, J.F Liu, C.T Nelson, S Saremi, B Prasad, A.B Mei, D.G Schlom, J Íñiguez, P García-Fernández, D.A Muller, L.Q Chen, J Junquera, L.W Martin, and Ramamoorthy Ramesh."Observation of room-temperature polar skyrmions."Nature
568 (2019) 368-372. DOI
2018
Chen, Z, Z Chen, C.-Y Kuo, Y Tang, L.R Dedon, Q Li, L Zhang, C Klewe, Y.-L Huang, B Prasad, A Farhan, M Yang, J.D Clarkson, S Das, S Manipatruni, A Tanaka, P Shafer, E Arenholz, A Scholl, Y.-H Chu, Z.Q Qiu, Z Hu, L.-H Tjeng, Ramamoorthy Ramesh, L.-W Wang, and L.W Martin."Complex strain evolution of polar and magnetic order in multiferroic BiFeO3 thin films."Nature Communications
9 (2018). DOI
Shafer, P, P García-Fernández, P Aguado-Puente, A.R Damodaran, A.K Yadav, C.T Nelson, S.-L Hsu, J.C Wojdeł, J Íñiguez, L.W Martin, E Arenholz, J Junquera, and Ramamoorthy Ramesh."Emergent chirality in the electric polarization texture of titanate superlattices."Proceedings of the National Academy of Sciences of the United States of America
115 (2018) 915-920. DOI
2016
Yadav, A.K, C.T Nelson, S.L Hsu, Z Hong, J.D Clarkson, C.M Schlepütz, A.R Damodaran, P Shafer, E Arenholz, L.R Dedon, D Chen, A Vishwanath, A.M Minor, L.Q Chen, J.F Scott, L.W Martin, and Ramamoorthy Ramesh."Erratum: Observation of polar vortices in oxide superlattices (Nature (2016) 530 (198-201) DOI:10.1038/nature16463)."Nature
534 (2016) 138. DOI
Yadav, A.K, C.T Nelson, S.L Hsu, Z Hong, J.D Clarkson, C.M Schlepuëtz, A.R Damodaran, P Shafer, E Arenholz, L.R Dedon, D Chen, A Vishwanath, A.M Minor, L.Q Chen, J.F Scott, L.W Martin, and Ramamoorthy Ramesh."Observation of polar vortices in oxide superlattices."Nature
530 (2016) 198-201. DOI
2010
Yang, S.Y, J Seidel, S.J Byrnes, P Shafer, C.-H Yang, M.D Rossell, P Yu, Y.-H Chu, J.F Scott, Joel W Ager, L.W Martin, and Ramamoorthy Ramesh."Above-bandgap voltages from ferroelectric photovoltaic devices."Nature Nanotechnology
5 (2010) 143-147. DOI
2009
Jang, H.W, D Ortiz, S.-H Baek, C.M Folkman, R.R Das, P Shafer, Y H Chen, C.T Nelson, X Pan, Ramamoorthy Ramesh, and C.-B Eom."Domain engineering for enhanced ferroelectric properties of epitaxial (001) BiFeO thin films."Advanced Materials
21 (2009) 817-823. DOI
Chu, Y.-H, Q He, C.-H Yang, P Yu, L.W Martin, P Shafer, and Ramamoorthy Ramesh."Nanoscale control of domain architectures in BiFeO 3 thin films."Nano Letters
9 (2009) 1726-1730. DOI
2008
Jang, H.W, S.H Baek, D Ortiz, C.M Folkman, C.B Eom, Y.H Chu, P Shafer, Ramamoorthy Ramesh, V Vaithyanathan, and D.G Schlom."Epitaxial (001) BiFe O3 membranes with substantially reduced fatigue and leakage."Applied Physics Letters
92 (2008). DOI
Jang, H.W, S.H Baek, D Ortiz, C.M Folkman, R.R Das, Y.H Chu, P Shafer, J.X Zhang, S Choudhury, V Vaithyanathan, Y.B Chen, D.A Felker, M.D Biegalski, M.S Rzchowski, X.Q Pan, D.G Schlom, L.Q Chen, Ramamoorthy Ramesh, and C.B Eom."Strain-induced polarization rotation in epitaxial (001) BiFeO3 thin films."Physical Review Letters
101 (2008). DOI
2007
Shafer, P, F Zavaliche, Y.-H Chu, P.-L Yang, M.P Cruz, and Ramamoorthy Ramesh."Planar electrode piezoelectric force microscopy to study electric polarization switching in BiFe O3."Applied Physics Letters
90 (2007). DOI
Cruz, M.P, Y.H Chu, J.X Zhang, P.L Yang, F Zavaliche, Q He, P Shafer, L.Q Chen, and Ramamoorthy Ramesh."Strain control of domain-wall stability in epitaxial BiFeO3 (110) films."Physical Review Letters
99 (2007). DOI
2005
Zavaliche, F, H Zheng, L Mohaddes-Ardabili, S.Y Yang, Q Zhan, P Shafer, E Reilly, R Chopdekar, Y Jia, P Wright, D.G Schlom, Y Suzuki, and Ramamoorthy Ramesh."Electric field-induced magnetization switching in epitaxial columnar nanostructures."Nano Letters
5 (2005) 1793-1796. DOI
Zavaliche, F, R.R Das, D.M Kim, C.B Eom, S.Y Yang, P Shafer, and Ramamoorthy Ramesh."Ferroelectric domain structure in epitaxial BiFeO 3 films."Applied Physics Letters
87 (2005) 1-3. DOI
Zavaliche, F, P Shafer, Ramamoorthy Ramesh, M.P Cruz, R.R Das, D.M Kim, and C.B Eom."Polarization switching in epitaxial BiFeO 3 films."Applied Physics Letters
87 (2005) 1-3. DOI