Metal–Insulator Transition of the Hubbard Chain with Next-Nearest-Neighbor Hopping –Partially Ferromagnetic Metal toward Mott Insulator–

2004 ◽  
Vol 73 (4) ◽  
pp. 983-990 ◽  
Author(s):  
Hiroki Nakano ◽  
Yoshinori Takahashi
Keyword(s):  
Nearest Neighbor ◽  
Mott Insulator ◽  
Ferromagnetic Metal ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

scholarly journals Spin injection into vanadium dioxide films from a typical ferromagnetic metal, across the metal–insulator transition of the vanadium dioxide films

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035120
Author(s):  
Kazuma Tamura ◽  
Teruo Kanki ◽  
Shun Shirai ◽  
Hidekazu Tanaka ◽  
Yoshio Teki ◽  
...  
Keyword(s):  
Vanadium Dioxide ◽  
Spin Injection ◽  
Ferromagnetic Metal ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Pressure-induced metal-insulator transition in the spin-orbit Mott insulator Ba2IrO4

2011 ◽  
Vol 84 (11) ◽  
Author(s):  
H. Okabe ◽  
N. Takeshita ◽  
M. Isobe ◽  
E. Takayama-Muromachi ◽  
T. Muranaka ◽  
...  
Keyword(s):  
Mott Insulator ◽  
Insulator Transition ◽  
Spin Orbit ◽  
Metal Insulator Transition ◽  
Metal Insulator

SOLVABLE MODEL OF A METAL-INSULATOR TRANSITION

1990 ◽  
Vol 04 (15n16) ◽  
pp. 2371-2394 ◽  
Author(s):  
R. SHANKAR
Keyword(s):  
Conformal Invariance ◽  
Solvable Model ◽  
Mott Transition ◽  
Mott Insulator ◽  
Scale Factor ◽  
Insulator Transition ◽  
Response Functions ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Half Filling

A solvable model of d = 1 spinless fermions at half-filling which exhibits a Mott transition is studied in detail. Many response functions are computed: at zero and nonzero temperatures, in the insulating and metallic sites, at the transition, and at q ≃ 0, 2k F . Some quantities are computed exactly, others only upto a scale factor. Some results are old, but mentioned here for completeness. Some are rederived using new tools such as conformal invariance. The rest are new. Next, the effect of randomness on the Mott state is explored. It is found, on the basis of Imry-Ma type arguments that no matter how large the gap is, the Mott insulator turns into an Anderson insulator immediately.

scholarly journals EFFECT OF STRAIN ON THE TRANSPORT PROPERTIES OF THE MANGANITE

2001 ◽  
Vol 15 (27) ◽  
pp. 3551-3558 ◽  
Author(s):  
S. BASAK ◽  
I. CHAUDHURI ◽  
S. K. GHATAK
Keyword(s):  
Magnetic Field ◽  
Nearest Neighbor ◽  
Large Strain ◽  
Spin Correlation ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Jahn Teller ◽  
Jahn Teller Effect ◽  
Increasing Function

The effect of strain on the resistivity and thermopower of ferromagnetic manganites has been examined based on the model that incorporates the electron-lattice interaction through the Jahn–Teller effect and an effective hopping determined by nearest neighbor spin–spin correlation of t2g electrons. The metal insulator transition temperature associated with resistivity decreases with increase in strain. In the presence of large strain the system remains in the semiconducting state. Thermopower (S) is positive and increasing function of strain and it exhibits a maximum with temperature. The temperature where maximum of S appears, shifts towards higher (lower) value in the presence of magnetic field (strain). A large magneto-thermopower that depends on strain is obtained around metal–insulator transition.

Observation of Structural Change in the Novel Ferromagnetic Metal–Insulator Transition of K2Cr8O16

2012 ◽  
Vol 81 (5) ◽  
pp. 054710 ◽  
Author(s):  
Akiko Nakao ◽  
Yuki Yamaki ◽  
Hironori Nakao ◽  
Youichi Murakami ◽  
Kunihiro Hasegawa ◽  
...  
Keyword(s):  
Structural Change ◽  
Ferromagnetic Metal ◽  
Insulator Transition ◽  
The Novel ◽  
Metal Insulator Transition ◽  
Metal Insulator

Pressure-induced metal-insulator transition of the mott insulator Ba2IrO4

2013 ◽  
Vol 63 (3) ◽  
pp. 349-351 ◽  
Author(s):  
Daisuke Orii ◽  
Masafumi Sakata ◽  
Atsushi Miyake ◽  
Katsuya Shimizu ◽  
Hirotaka Okabe ◽  
...  
Keyword(s):  
Mott Insulator ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

METAL–INSULATOR TRANSITION OF THE SPINLESS FERMIONS ON THE KAGOMÉ LATTICE

2011 ◽  
Vol 25 (12n13) ◽  
pp. 947-953 ◽  
Author(s):  
MASAAKI NAKAMURA ◽  
SATOSHI NISHIMOTO ◽  
AROON O'BRIEN ◽  
PETER FULDE
Keyword(s):  
Nearest Neighbor ◽  
Random Phase ◽  
Insulator Transition ◽  
Kagome Lattice ◽  
Qualitative Properties ◽  
Metal Insulator Transition ◽  
Coupling Region ◽  
Metal Insulator ◽  
Kagomé Lattice ◽  
Spinless Fermion

We discuss the metal–insulator transition of the spinless fermion model with nearest-neighbor repulsion on the Kagomé lattice at 1/3- and 2/3-filling. The system is analyzed by using exact diagonalization, the density-matrix renormalization group methods and the random phase approximation. In the strong-coupling region, the system is described by ring exchange processes. In the intermediate-coupling regime, we find that the qualitative properties of the metal–insulator transition at 1/3- and 2/3-filling are totally different reflecting the difference in the band structure near the Fermi level.

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