TY - JOUR AB - Ferroelectric domain wall (DW) conductivity (DWC) can be attributed to two separate mechanisms: (a) the injection/ejection of charge carriers across the Schottky barrier formed at the (metal-)electrode-DW junction and (b) the transport of those charge carriers along the DW. Current-voltage (I-U) characteristics, recorded at variable temperatures from LiNbO3 (LNO) DWs, are clearly able to differentiate between these two contributions. Practically, they allow us to directly quantify the physical parameters relevant to the two mechanisms (a) and (b) mentioned above. These are, for example, the resistance of the DW, the saturation current, the ideality factor, and the Schottky barrier height of the electrode-DW junction. Furthermore, the activation energies needed to initiate the thermally activated electronic transport along the DWs can be extracted. In addition, we show that electronic transport along LNO DWs can be elegantly viewed and interpreted in an adapted semiconductor picture based on a double-diode, double-resistor equivalent-circuit model, the R2D2 model. Finally, our R2D2 model was checked for its universality by successfully fitting the I-U curves of not only z-cut LNO bulk DWs, but equally of z-cut thin-film LNO DWs, and of x-cut thin-film DWs as reported in literature. AU - Zahn, Manuel AU - Beyreuther, Elke AU - Kiseleva, Iuliia AU - Lotfy, Ahmed Samir AU - McCluskey, Conor J. AU - Maguire, Jesi R. AU - Suna, Ahmet AU - Rüsing, Michael AU - Gregg, J. Marty AU - Eng, Lukas M. ID - 51156 IS - 2 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium VL - 21 ER - TY - JOUR AU - Lüders, Carolin AU - Gil-Lopez, Jano AU - Allgaier, Markus AU - Brecht, Benjamin AU - Aßmann, Marc AU - Silberhorn, Christine AU - Bayer, Manfred ID - 42158 IS - 1 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - Tailored Frequency Conversion Makes Infrared Light Visible for Streak Cameras VL - 19 ER - TY - JOUR AB - In the last decade, conductive domain walls (CDWs) in single crystals of the uniaxial model ferroelectric lithium niobate (LiNbO3; LNO) have been shown to reach resistances more than 10 orders of magnitude lower than the resistance of the surrounding bulk, with charge carriers being firmly confined to sheets with a width of a few nanometers. LNO is thus currently witnessing increased attention because of its potential in the design of room-temperature nanoelectronic circuits and devices based on such CDWs. In this context, the reliable determination of the fundamental transport parameters of LNO CDWs, in particular the 2D charge carrier density n2D and the Hall mobility μH of the majority carriers, is of great interest. In this contribution, we present and apply a robust and easy-to-prepare Hall-effect measurement setup by adapting the standard four-probe van der Pauw method to contact a single, hexagonally shaped domain wall that fully penetrates the 200-μm-thick LNO bulk single crystal. We then determine n2D and μH for a set of external magnetic fields B and prove the expected cosinelike angular dependence of the Hall voltage. Lastly, we present photoinduced-Hall-effect measurements of one and the same DW, by determining the impact of super-band-gap illumination on n2D. AU - Beccard, Henrik AU - Beyreuther, Elke AU - Kirbus, Benjamin AU - Seddon, Samuel D. AU - Rüsing, Michael AU - Eng, Lukas M. ID - 50407 IS - 6 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - Hall mobilities and sheet carrier densities in a single LiNbO3 conductive ferroelectric domain wall VL - 20 ER - TY - JOUR AU - Gao, Wenlong AU - Sain, Basudeb AU - Zentgraf, Thomas ID - 30964 IS - 4 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - Spin-Orbit Interaction of Light Enabled by Negative Coupling in High-Quality-Factor Optical Metasurfaces VL - 17 ER - TY - JOUR AU - Bartnick, Moritz AU - Santandrea, Matteo AU - Höpker, Jan Philipp AU - Thiele, Frederik AU - Ricken, Raimund AU - Quiring, Viktor AU - Eigner, Christof AU - Herrmann, Harald AU - Silberhorn, Christine AU - Bartley, Tim ID - 26221 JF - Physical Review Applied SN - 2331-7019 TI - Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides ER - TY - JOUR AU - Faruque, Imad I. AU - Sinclair, Gary F. AU - Bonneau, Damien AU - Ono, Takafumi AU - Silberhorn, Christine AU - Thompson, Mark G. AU - Rarity, John G. ID - 38046 IS - 5 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - Estimating the Indistinguishability of Heralded Single Photons Using Second-Order Correlation VL - 12 ER - TY - JOUR AU - Stefszky, Michael AU - Ricken, R. AU - Eigner, Christof AU - Quiring, V. AU - Herrmann, Harald AU - Silberhorn, Christine ID - 26040 JF - Physical Review Applied SN - 2331-7019 TI - Waveguide Cavity Resonator as a Source of Optical Squeezing ER - TY - JOUR AU - Rütz, Helge AU - Luo, Kai Hong AU - Suche, Hubertus AU - Silberhorn, Christine ID - 26059 JF - Physical Review Applied SN - 2331-7019 TI - Quantum Frequency Conversion between Infrared and Ultraviolet ER - TY - JOUR AU - Czerniuk, T. AU - Ehrlich, T. AU - Wecker, T. AU - As, Donat Josef AU - Yakovlev, D. R. AU - Akimov, A. V. AU - Bayer, M. ID - 4812 IS - 1 JF - Physical Review Applied SN - 2331-7019 TI - Picosecond Acoustics in Single Quantum Wells of Cubic GaN/(Al,Ga)N VL - 7 ER - TY - JOUR AU - Stefszky, Michael AU - Ricken, R. AU - Eigner, Christof AU - Quiring, V. AU - Herrmann, Harald AU - Silberhorn, Christine ID - 9618 JF - Physical Review Applied SN - 2331-7019 TI - Waveguide Cavity Resonator as a Source of Optical Squeezing ER - TY - JOUR AU - Stefszky, M. AU - Ricken, R. AU - Eigner, Christof AU - Quiring, V. AU - Herrmann, Harald AU - Silberhorn, Christine ID - 9684 JF - Physical Review Applied SN - 2331-7019 TI - Waveguide Cavity Resonator as a Source of Optical Squeezing ER - TY - JOUR AU - Montaut, Nicola AU - Sansoni, Linda AU - Meyer-Scott, Evan AU - Ricken, Raimund AU - Quiring, Viktor AU - Herrmann, Harald AU - Silberhorn, Christine ID - 38058 IS - 2 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - High-Efficiency Plug-and-Play Source of Heralded Single Photons VL - 8 ER -