TY - JOUR
T1 - Electronic of a strongly correlated two-dimensional system, Pd(dmit) 2 salts, controlled by uni-axial strain and counter cations
AU - Kato, R.
AU - Tajima, A.
AU - Tajima, N.
AU - Nakao, A.
AU - Tamura, M.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004
Y1 - 2004
N2 - The uni-axial strain effects in a series of anion radical salts, β′-Me4Z [Pd(dmit)2]2, β′-Et2Me2Z[Pd(dmit)2]2 (Z=P, As, Sb) and Et2Me2N[Pd(dmit)2] 2 are described. They are classified into a strongly correlated two-dimensional system. The conduction layer consists of strongly dimerized Pd(dmit)2 units forming a distorted triangular lattice. The electronic structure can be well described by the dimer model. The half-filled conduction band originates from the HOMO of the Pd(dmit)2 molecule. At ambient pressure, these salts are Mott-insulators where the frustration plays a crucial role. The electronic state of this system would be governed by the on-site Coulomb energy, the band width, and the degree of frustration, each of which is sensitive to the intra- and inter-dimer interactions. The application of uni-axial pressure induces a variety of physical properties including superconductivity. The choice of the counter cation affects the electronic state under the uni-axial strain.
AB - The uni-axial strain effects in a series of anion radical salts, β′-Me4Z [Pd(dmit)2]2, β′-Et2Me2Z[Pd(dmit)2]2 (Z=P, As, Sb) and Et2Me2N[Pd(dmit)2] 2 are described. They are classified into a strongly correlated two-dimensional system. The conduction layer consists of strongly dimerized Pd(dmit)2 units forming a distorted triangular lattice. The electronic structure can be well described by the dimer model. The half-filled conduction band originates from the HOMO of the Pd(dmit)2 molecule. At ambient pressure, these salts are Mott-insulators where the frustration plays a crucial role. The electronic state of this system would be governed by the on-site Coulomb energy, the band width, and the degree of frustration, each of which is sensitive to the intra- and inter-dimer interactions. The application of uni-axial pressure induces a variety of physical properties including superconductivity. The choice of the counter cation affects the electronic state under the uni-axial strain.
KW - Pd(dmit)
KW - Resistivity
KW - Uni-axial strain
UR - http://www.scopus.com/inward/record.url?scp=10344265322&partnerID=8YFLogxK
U2 - 10.1051/jp4:2004114099
DO - 10.1051/jp4:2004114099
M3 - Conference article
AN - SCOPUS:10344265322
SN - 1155-4339
VL - 114
SP - 411
EP - 417
JO - Journal De Physique. IV : JP
JF - Journal De Physique. IV : JP
T2 - ISCOM 2003: 5th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
Y2 - 21 September 2003 through 26 September 2003
ER -