Zobrazeno 1 - 10
of 193
pro vyhledávání: '"O’Hara, Andrew"'
Cubic perovskite-structure ABO$_3$ and A$_{1-x}$A$^{\prime}$$_x$BO$_3$-type oxides have been investigated extensively while their hexagonal-structure versions have received minimal attention, even though they are multiferroic and can form heterostruc
Externí odkaz:
http://arxiv.org/abs/2401.15053
Autor:
O'Hara, Andrew, Plotkin-Swing, Benjamin, Dellby, Niklas, Idrobo, Juan Carlos, Krivanek, Ondrej L., Lovejoy, Tracy C., Pantelides, Sokrates T.
Vibrations in materials and nanostructures at sufficiently high temperatures result in anharmonic atomic displacements, which leads to new phenomena such as thermal expansion and multiphonon scattering processes, with a profound impact on temperature
Externí odkaz:
http://arxiv.org/abs/2310.13813
Autor:
Hoglund, Eric R., Bao, De-Liang, O'Hara, Andrew, Pfeifer, Thomas W., Hoque, Md Shafkat Bin, Makarem, Sara, Howe, James M., Pantelides, Sokrates T., Hopkins, Patrick E., Hachtel, Jordan A.
Grain boundaries (GBs) are a prolific microstructural feature that dominates the functionality of a wide class of materials. The change in functionality at a GB is a direct result of unique local atomic arrangements, different from those in the grain
Externí odkaz:
http://arxiv.org/abs/2208.00309
The quest for electric-field control of nanoscale magnetic states such as skyrmions, which would impact the field of spintronics, has led to a challenging search for multiferroic materials or structures with strong magnetoelectric coupling and effici
Externí odkaz:
http://arxiv.org/abs/2203.00884
Autor:
Ali, Zeeshan, Wang, Zhen, O'Hara, Andrew, Saghayezhian, Mohammad, Shin, Donghan, Zhu, Yimei, Pantelides, Sokrates T., Zhang, Jiandi
Publikováno v:
Phys. Rev. B 105, 054429 (2022)
The electro-magnetic properties of ultrathin epitaxial ruthenate films have long been the subject of debate. Here we combine experimental with theoretical investigations of (SrTiO3)5-(SrRuO3)n-(SrTiO3)5 (STO5-SROn-STO5) heterostructures with n = 1 an
Externí odkaz:
http://arxiv.org/abs/2112.10076
Autor:
Neumayer, Sabine M., Si, Mengwei, Li, Junkang, Liao, Pai-Ying, Tao, Lei, O'Hara, Andrew, Pantelides, Sokrates T., Ye, Peide D., Maksymovych, Petro, Balke, Nina
Publikováno v:
ACS Appl. Mater. Interfaces 2022, 14, 2, 3018-3026
The van der Waals layered material CuInP2S6 features interesting functional behavior, including the existence of four uniaxial polarization states, polarization reversal against the electric field through Cu ion migration, a negative-capacitance regi
Externí odkaz:
http://arxiv.org/abs/2109.13331
Publikováno v:
Adv. Electron. Mater. 2100810 (2021)
Ferroelectrics that are also ionic conductors offer possibilities for novel applications with high tunability, especially if the same atomic species causes both phenomena. In particular, at temperatures just below the Curie temperature, polarized sta
Externí odkaz:
http://arxiv.org/abs/2107.09655
Autor:
Hoglund, Eric R., Bao, De-Liang, O'Hara, Andrew, Makarem, Sara, Piontkowski, Zachary T., Matson, Joseph R., Yadav, Ajay K., Haisimaier, Ryan C., Engel-Herbert, Roman, Ihlefeld, Jon F., Ravichandran, Jayakanth, Ramesh, Ramamoorthy, Caldwell, Joshua D., Beechem, Thomas E., Tomko, John A., Hachtel, Jordan A., Pantelides, Sokrates T., Hopkins, Patrick E., Howe, James M.
Publikováno v:
Nature 601, 556 (2022)
As the length-scales of materials decrease, heterogeneities associated with interfaces approach the importance of the surrounding materials. Emergent electronic and magnetic interface properties in superlattices have been studied extensively by both
Externí odkaz:
http://arxiv.org/abs/2105.10030
Publikováno v:
Journal of Applied Physics; 5/21/2024, Vol. 135 Issue 19, p1-13, 13p
Publikováno v:
Nano Energy 75, 104916 (2020)
Lithium-intercalated layered transition-metal oxides, LixTMO2, brought about a paradigm change in rechargeable batteries in recent decades and show promise for use in memristors, a type of device for future neural computing and on-chip storage. Therm
Externí odkaz:
http://arxiv.org/abs/1912.00570