P
Pablo García-Fernández
Researcher at University of Cantabria
Publications - 139
Citations - 3311
Pablo García-Fernández is an academic researcher from University of Cantabria. The author has contributed to research in topics: Jahn–Teller effect & Density functional theory. The author has an hindex of 25, co-authored 126 publications receiving 2326 citations. Previous affiliations of Pablo García-Fernández include University of Texas at Austin & Spanish National Research Council.
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Journal ArticleDOI
Observation of room-temperature polar skyrmions
Sujit Das,Yun-Long Tang,Yun-Long Tang,Zijian Hong,M. A. P. Gonçalves,Margaret McCarter,Christoph Klewe,Kayla X. Nguyen,Fernando Gómez-Ortiz,P. Shafer,Elke Arenholz,Vladimir Stoica,Shang-Lin Hsu,Shang-Lin Hsu,Bo Wang,Colin Ophus,Jian Liu,Christopher T. Nelson,Sahar Saremi,Bhagwati Prasad,Antonio B. Mei,Darrell G. Schlom,Jorge Íñiguez,Pablo García-Fernández,David A. Muller,Long Qing Chen,Javier Junquera,Lane W. Martin,Lane W. Martin,Ramamoorthy Ramesh,Ramamoorthy Ramesh +30 more
TL;DR: In this paper, a room-temperature polar-skyrmion bubbles were discovered in a lead titanate layer confined by strontium titanate layers, which were imaged by atomic-resolution scanning transmission electron microscopy.
Journal ArticleDOI
Spatially resolved steady-state negative capacitance.
Ajay K. Yadav,Kayla X. Nguyen,Zijian Hong,Pablo García-Fernández,Pablo Aguado-Puente,Christopher T. Nelson,Christopher T. Nelson,Sujit Das,Bhagwati Prasad,Daewoong Kwon,Suraj Cheema,Asif Islam Khan,Asif Islam Khan,Chenming Hu,Jorge Íñiguez,Javier Junquera,Long Qing Chen,David A. Muller,Ramamoorthy Ramesh,Sayeef Salahuddin +19 more
TL;DR: A direct measurement of steady-state negative capacitance in a ferroelectric–dielectric heterostructure is demonstrated using electron microscopy complemented by phase-field and first-principles-based (second- Principles) simulations in SrTiO3/PbTiO2 superlattices with atomic resolution.
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Siesta: Recent developments and applications
Alberto García,Nick Rübner Papior,Arsalan Akhtar,Emilio Artacho,Volker Blum,Emanuele Bosoni,Pedro Brandimarte,Mads Brandbyge,Jorge Cerdá,Fabiano Corsetti,Ramón Cuadrado,Vladimir Dikan,Jaime Ferrer,Julian D. Gale,Pablo García-Fernández,Víctor M. García-Suárez,Sandra García,Georg Huhs,Sergio Illera,Richard Korytár,Peter Koval,Irina V. Lebedeva,Lin Lin,Pablo López-Tarifa,Sara G. Mayo,Stephan Mohr,Pablo Ordejón,Andrei Postnikov,Yann Pouillon,Miguel Pruneda,Roberto Robles,Daniel Sánchez-Portal,José M. Soler,Rafi Ullah,Victor Yu,Javier Junquera +35 more
TL;DR: The Siesta program as mentioned in this paper combines finite support pseudo-atomic orbitals as basis sets, norm-conserving pseudopotentials, and a real-space grid for the representation of charge density and potentials and the computation of their associated matrix elements.
Journal ArticleDOI
Phase coexistence and electric-field control of toroidal order in oxide superlattices.
Anoop R. Damodaran,Anoop R. Damodaran,James D. Clarkson,James D. Clarkson,Zijian Hong,Hanyu Liu,Ajay K. Yadav,Ajay K. Yadav,Christopher T. Nelson,Christopher T. Nelson,Shang-Li Hsu,Shang-Li Hsu,Margaret McCarter,Kyoung-Duck Park,Vasily Kravtsov,Alan Farhan,Yongqi Dong,Z. Cai,H. Zhou,Pablo Aguado-Puente,Pablo Aguado-Puente,Pablo García-Fernández,Jorge Íñiguez,Javier Junquera,Andreas Scholl,Markus B. Raschke,Long Qing Chen,Dillon D. Fong,Ramamoorthy Ramesh,Ramamoorthy Ramesh,Lane W. Martin,Lane W. Martin +31 more
TL;DR: Systems that exhibit phase competition, order parameter coexistence, and emergent order parameter topologies constitute a major part of modern condensed-matter physics and are observed to be found in PbTiO3/Sr TiO3 superlattices.
Journal ArticleDOI
Emergent chirality in the electric polarization texture of titanate superlattices
Padraic Shafer,Pablo García-Fernández,Pablo Aguado-Puente,Anoop R. Damodaran,Ajay K. Yadav,Christopher T. Nelson,Christopher T. Nelson,Shang-Lin Hsu,Shang-Lin Hsu,Jacek C. Wojdeł,Jorge Íñiguez,Lane W. Martin,Lane W. Martin,Elke Arenholz,Javier Junquera,Ramamoorthy Ramesh,Ramamoorthy Ramesh +16 more
TL;DR: Using resonant soft X-ray diffraction, the observation of a strong circular dichroism from the interaction between circularly polarized light and the chiral electric polarization texture that emerges in PbTiO 3/SrTiO3 superlattices is reported.