Results 1 to 10 of about 5,123 (210)

Electric Transport of Nodal Line Semimetals in Single-Component Molecular Conductors [PDF]

Crystals, 2020
We examine an effect of acoustic phonon scattering on the electric conductivity of a single-component molecular conductor [Pd(dddt)2] (dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate) with a half-filled band by applying the previous calculation in a two ...
Yoshikazu Suzumura, Reizo Kato, Masao Ogata   +2 more
doaj   +5 more sources

Berry Phase of Dirac Nodal Line Semimetal in Single-Component Molecular Conductor [PDF]

Journal of the Physical Society of Japan, 2018
The Berry phase and curvature are studied for the Dirac nodal line semimetal of single-component molecular conductor [Pd(dddt)$_2$]. Using two-band model on the basis of a tight-binding model, it is shown that the Berry curvature, $\bm{B}(\bm{k})$, exists along a loop of the nodal line, on which the Berry phase is obtained from surface integral of $\bm{
Yoshikazu Suzumura, Ai Yamakage, Suzumura Yoshikazu   +2 more
exaly   +3 more sources

Single-Component Molecular Conductors — Multi-Orbital Correlated π-d Electron Systems [PDF]

Bulletin of the Chemical Society of Japan, 2021
Abstract Traditional molecular conductors are composed of more than two chemical species. Two prerequisites for the design of molecular metals have long been considered to be 1) forming of the electronic band and 2) existence of charge carriers created by the intermolecular charge transfer between the molecules constructing the band and ...
Akiko Kobayashi, Biao Zhou, Rina Takagi, Kazuya Miyagawa, Shoji Ishibashi, Akito Kobayashi, Taiki Kawamura, Eiji Nishibori, Kazushi Kanoda   +8 more
openaire   +1 more source

High-Pressure Crystal Structure and Unusual Magnetoresistance of a Single-Component Molecular Conductor [Pd(dddt)₂] (dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate)

Crystals, 2021
A single-component molecular crystal [Pd(dddt)2] has been shown to exhibit almost temperature-independent resistivity under high pressure, leading theoretical studies to propose it as a three-dimensional (3D) Dirac electron system.
Hengbo Cui, Hamish H.-M. Yeung, Yoshitaka Kawasugi, Takaaki Minamidate, Lucy K. Saunders, Reizo Kato   +5 more
doaj   +1 more source

Introducing Selenium in Single-Component Molecular Conductors Based on Nickel Bis(dithiolene) Complexes

Inorganic Chemistry, 2021
Two selenated analogues of the all-sulfur single-component molecular conductor [Ni(Et-thiazdt)2] (Et-thiazdt = N-ethylthiazoline-2-thione-4,5-dithiolate) have been prepared from their precursor radical-anion complexes. Replacement of the thione by a selenone moiety gives the neutral [Ni(Et-thiazSedt)2] complex.
Hadi Hachem, HengBo Cui, Reizo Kato, Olivier Jeannin, Frédéric Barrière, Marc Fourmigué, Dominique Lorcy   +6 more
openaire   +4 more sources

Electronic States of Single-Component Molecular Conductors [M(tmdt)₂] [PDF]

Journal of the Physical Society of Japan, 2013
11 pages, 10 ...
Seo, Hitoshi, Ishibashi, Shoji, Otsuka, Yuichi, Fukuyama, Hidetoshi, Terakura, Kiyoyuki   +4 more
openaire   +2 more sources

NMR verification of Dirac nodal lines in a single-component molecular conductor

, 2022
The Dirac nodal line (DNL) is a novel form of massless Dirac fermions that reside along lines in momentum space. Here, we verify genuine DNLs in the molecular material, [Ni(dmdt)$_2$], with the combined NMR experiments and numerical simulations. The NMR spectral shift and spin-lattice relaxation rate divided by temperature, $1/T_1T$, decrease linearly ...
Sekine, Takahiko, Sunami, Keishi, Hatamura, Takumi, Miyagawa, Kazuya, Akimoto, Kenta, Zhou, Biao, Ishibashi, Shoji, Kobayashi, Akiko, Kanoda, Kazushi   +8 more
openaire   +2 more sources

Conductivity and Resistivity of Dirac Electrons in Single-Component Molecular Conductor [Pd(dddt)₂] [PDF]

Journal of the Physical Society of Japan, 2018
Dirac electrons, which have been found in the single-component molecular conductor [Pd(dddt)_2] under pressure, are examined by calculating the conductivity and resistivity in terms of a tight-binding model for several pressures of P GPa, which give a nodal line semimetal or insulator.
Suzumura, Yoshikazu, Cui, HenBo, Kato, Reizo   +2 more
openaire   +2 more sources

Dirac Cone Formation in Single-Component Molecular Conductors Based on Metal Dithiolene Complexes

Magnetochemistry, 2023
Single-component molecular conductors exhibit a strong connection to the Dirac electron system. The formation of Dirac cones in single-component molecular conductors relies on (1) the crossing of HOMO and LUMO bands and (2) the presence of nodes in the HOMO–LUMO couplings.
Reizo Kato, Takao Tsumuraya
openaire   +2 more sources

Electronic Structure of Cu(tmdt)2 Studied with First-Principles Calculations

Crystals, 2012
We have studied the electronic structure of Cu(tmdt)2, a material related to single-component molecular conductors, by first-principles calculations. The total energy calculations for several different magnetic configurations show that there is strong ...
Kiyoyuki Terakura, Shoji Ishibashi
doaj   +1 more source