Publications
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X Author: P. Shafer
2020
Cheema, S.S., D. Kwon, N. Shanker, 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, J.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