493 citations · 2k across the 25 of their papers we have counts for
5 papers · 1 filter
Localization of Two-dimensional Electron Gas in LaAlO3/SrTiO3 Heterostructures
T. Hernandez, C. W. Bark, D. A. Felker +2
We report strong localization of 2D electron gas in LaAlO3 / SrTiO3 epitaxial thin-film heterostructures grown on (LaAlO3)0.3-(Sr2AlTaO3)0.7 substrates by using pulsed laser deposi…
Reversal of Ferroelectric Polarization by Mechanical Means
H. Lu, C. -W. Bark, D. Esque de los Ojos +4
Ferroelectric materials are characterized by the presence of an electric dipole that can be reversed by application of an external electric field, a feature that is exploited in fe…
Coexistence of superconductivity and ferromagnetism in two dimensions
D. A. Dikin, M. Mehta, C. W. Bark +3
Ferromagnetism is usually considered to be incompatible with conventional superconductivity, as it destroys the singlet correlations responsible for the pairing interaction. Superc…
Superfluid density measurements of Ba(CoxFe1-x)2As2 films near optimal doping
Jie Yong, S. Lee, J. Jiang +6
We report the first direct measurements of superfluid density, ns(T) \propto λ-2(T), in films of Fe-pnictide superconductors. The magnetic penetration depth, λ(0), in our epitaxial…
Nature of polarization fatigue in BiFeO3
Seung-Hyub Baek, Chad M. Folkman, Jae-Wan Park +4
As a room-temperature multiferroic, BiFeO3 has been intensively investigated for both magnetoelectric devices and non-volatile ferroelectric memory applications. Both magnetoelectr…