475 citations · 1.3k across the 36 of their papers we have counts for
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Quantum Dissipative Paraelectricity
A. Cano
Whether a quantum system with a double-well effective potential undergoes spontaneous symmetry breaking depends not only on the potential landscape but also on the kinetics and the…
The third dimension of ferroelectric domain walls
Erik D. Roede, Konstantin Shapovalov, Thomas J. Moran +7
Ferroelectric domain walls are quasi-2D systems that show great promise for the development of non-volatile memory, memristor technology and electronic components with ultra-small…
Electrostatic potential mapping at ferroelectric domain walls by low-temperature photoemission electron microscopy
J. Schaab, K. Shapovalov, P. Schoenherr +10
Low-temperature X-ray photoemission electron microscopy (X-PEEM) is used to measure the electric potential at domain walls in improper ferroelectric Er0.99Ca0.01MnO3. By combining…
Interconversion of multiferroic domains and domain walls
E. Hassanpour, M. C. Weber, A. Bortis +6
Materials with long-range order like ferromagnetism or ferroelectricity exhibit uniform, yet differently oriented three-dimensional regions called domains that are separated by two…
Electrical half-wave rectification at ferroelectric domain walls
J. Schaab, S. H. Skjærvø, S. Krohns +10
Ferroelectric domain walls represent multifunctional 2D-elements with great potential for novel device paradigms at the nanoscale. Improper ferroelectrics display particularly prom…
Frequency dependent polarisation switching in h-ErMnO
Alexander Ruff, Ziyu Li, Alois Loidl +8
We report an electric-field poling study of the geometric-driven improper ferroelectric h-ErMnO. From a detailed dielectric analysis we deduce the temperature and frequency dep…
First-principles study of (Ba,Ca)TiO and Ba(Ti,Zr)O solid solutions
Danila Amoroso, Andres Cano, Philippe Ghosez
(Ba,Ca)TiO and Ba(Ti,Zr)O solid solutions are the building blocks of lead-free piezoelectric materials that attract a renewed interest. We investigate the properties of the…
Multiferroic Quantum Criticality
Awadhesh Narayan, Andres Cano, Alexander V. Balatsky +1
The zero-temperature limit of a continuous phase transition is marked by a quantum critical point, which can generate exotic physics that extends to elevated temperatures. Magnetic…
Imaging and characterization of conducting ferroelectric domain walls by photoemission electron microscopy
J. Schaab, I. P. Krug, F. Nickel +9
High-resolution X-ray photoemission electron microscopy (X-PEEM) is a well-established method for imaging ferroelectric domain structures. Here, we expand the scope of application…
Hidden order in hexagonal RMnO3 multiferroics
A. Cano
Hexagonal RMnO3 manganites are improper ferroelectrics in which the electric polarization is a by-product of the tripling of the unit cell. In YMnO3, there is a second transition a…
Electromagnon excitations in modulated multiferroics
A. Cano, E. I. Kats
The phenomenological theory of ferroelectricity in spiral magnets presented in [M. Mostovoy, Phys. Rev. Lett. 96, 067601 (2006)] is generalized to describe consistently states with…
Strong effect of surfaces on resolution limit of negative-index "superlens"
A. M. Bratkovsky, A. Cano, A. P. Levanyuk
We show that subwavelength imaging by negative index materials (NIM), related to their "soft" electromagnetic response, is very (and non trivially) sensitive to the surface propert…
On phase transitions in Pb/Ge(111) and Sn/Ge(111)
A. Cano, A. P. Levanyuk
The present communication is a critical examination of two points relevant to the surface phase transitions of Pb and Sn overlayers on Ge(111). One is connected with the reading of…