Results 11 to 20 of about 627,898 (258)

Magnetism and Charge Order in the Honeycomb Lattice [PDF]

Physical Review Letters, 2021
Despite being relevant to better understand the properties of honeycomb-like systems, as graphene-based compounds, the electron-phonon interaction is commonly disregarded in theoretical approaches. That is, the effects of phonon fields on \textit{interacting} Dirac electrons is an open issue, in particular when investigating long-range ordering.
Natanael C. Costa, Kazuhiro Seki, Sandro Sorella   +2 more
openaire   +3 more sources

Optical Conductivity Spectra of Charge-Crystal and Charge-Glass States in a Series of θ-Type BEDT-TTF Compounds

Crystals, 2022
In the 3/4-filled band system θ-(BEDT-TTF)2X with a two-dimensional triangular lattice, charge ordering (CO) often occurs due to strong inter-site Coulomb repulsion.
Kenichiro Hashimoto, Ryota Kobayashi, Satoshi Ohkura, Satoru Sasaki, Naoki Yoneyama, Masayuki Suda, Hiroshi M. Yamamoto, Takahiko Sasaki   +7 more
doaj   +1 more source

Phase Transition Field Effect Transistor Observed in an α-(BEDT-TTF)₂I₃ Single Crystal

Solids, 2023
The metal–insulator transition induced by the gate electric field in the charge order phase of the α-(BEDT-TTF)2I3 single-crystal field-effect transistor (FET) structure was clearly observed near the phase transition temperature.
Ryosuke Ando, Ryo Watanuki, Kazuhiro Kudo, Hyuma Masu, Masatoshi Sakai   +4 more
doaj   +1 more source

Tunable order of helically confined charges [PDF]

Physical Review E, 2020
We investigate a system of equally charged Coulomb-interacting particles confined to a toroidal helix in the presence of an external electric field. Due to the confinement, the particles experience an effective interaction that oscillates with the particle distance and allows for the existence of stable bound states, despite the purely repulsive ...
Ansgar Siemens, Peter Schmelcher
openaire   +3 more sources

Superconductivity and Charge Ordering in BEDT-TTF Based Organic Conductors with β″-Type Molecular Arrangement

Crystals, 2022
Exotic superconductivity that appears near the charge ordering instability has attracted significant interest since the beginning of superconducting study.
Yoshihiko Ihara, Shusaku Imajo
doaj   +1 more source

Effective Method for Multi-Probe Electrical Measurements of Organic Single Crystals: Four-Terminal Natural Adhesion Contact

Solids, 2022
A technique to establish electrical contact and perform multi-probe electrical measurements (e.g., four-probe measurements), even at low temperatures, is presented in this work.
Hiroki Watanabe, Sakyo Ushikubo, Masatoshi Sakai, Kazuhiro Kudo, Hyuma Masu   +4 more
doaj   +1 more source

Symmetry of charge order in cuprates [PDF]

Nature Materials, 2015
Charge-ordered ground states permeate the phenomenology of 3d-based transition metal oxides, and more generally represent a distinctive hallmark of strongly correlated states of matter. The recent discovery of charge order in various cuprate families has fuelled new interest into the role played by this incipient broken symmetry within the complex ...
Comin, R., Sutarto, R., He, F., da Silva Neto, E., Chauviere, L., Fraño, A., Liang, R., Hardy, W., Bonn, D., Yoshida, Y., Eisaki, H., Achkar, A., Hawthorn, D., Keimer, B., Sawatzky, G., Damascelli, A.   +15 more
openaire   +3 more sources

Charge states of ions, and mechanisms of charge ordering transitions [PDF]

Journal of Physics: Condensed Matter, 2014
To gain insight into the mechanism of charge-ordering transitions, which conventionally are pictured as a disproportionation of an ion M as 2M$^{n+}$ $\rightarrow$ M$^{(n+1)+}$ + M$^{(n-1)+}$, we (1) review and reconsider the charge state (or oxidation number) picture itself, (2) introduce new results for the putative charge ordering compound AgNiO$_2$
Pickett, W. E., Quan, Y., Pardo, V.
openaire   +3 more sources

Anharmonic Effects on Charge and Orbital Order [PDF]

Physical Review Letters, 2000
A Comment on the Letter by Tetsuya Mutou and Hiroushi Kontani, Phys. Rev. Lett. 83, 3685 (1999).
Khomskii, Daniel, van den Brink, Jeroen
openaire   +4 more sources

Synthesis and Structural Characterization of Layered Ni^+1/+2 Oxides Obtained by Topotactic Oxygen Release on Nd_2−xSr_xNiO_4−δ Single Crystals

Crystals, 2023
Layered nickelate oxides containing Ni1+/Ni2+ are isoelectronic to Cu2+/Cu3+ compounds and of present interest with respect to recent findings of superconductivity in a series of different compositions. It is thereby questionable why superconductivity is
Chavana Hareesh, Monica Ceretti, Philippe Papet, Alexeï Bosak, Martin Meven, Werner Paulus   +5 more
doaj   +1 more source