Mott transition and suppression of orbital fluctuations in orthorhombic 3d1 perovskites -: art. no. 176403

被引：408

作者：

Pavarini, E

Biermann, S

Poteryaev, A

Lichtenstein, AI

Georges, A

Andersen, OK

机构：

[1] Univ Pavia, INFM, I-27100 Pavia, Italy

[2] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy

[3] Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France

[4] Univ Nijmegen, NSRIM, NL-6525 ED Nijmegen, Netherlands

[5] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 17期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.176403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using t(2g) Wannier functions, a low-energy Hamiltonian is derived for orthorhombic 3d(1) transition-metal oxides. Electronic correlations are treated with a new implementation of dynamical mean-field theory for noncubic systems. Good agreement with photoemission data is obtained. The interplay of correlation effects and cation covalency (GdFeO3-type distortions) is found to suppress orbital fluctuations in LaTiO3 and even more in YTiO3, and to favor the transition to the insulating state.

引用

页码：176403 / 1

页数：4

共 35 条

[21] Electronic structure of Ca1-xSrxVO3:: A tale of two energy scales [J].

Maiti, K ;

Sarma, DD ;

Rozenberg, MJ ;

Inoue, IH ;

Makino, H ;

Goto, O ;

Pedio, M ;

Cimino, R .

EUROPHYSICS LETTERS, 2001, 55 (02) :246-252

[22] Bandwidth control in a perovskite-type 3d1-correlated metal Ca1-xSrxVO3.: II.: Optical spectroscopy [J].

Makino, H ;

Inoue, IH ;

Rozenberg, MJ ;

Hase, I ;

Aiura, K ;

Onari, S .

PHYSICAL REVIEW B, 1998, 58 (08) :4384-4393

[23] Sensitivity of the Mott transition to noncubic splitting of the orbital degeneracy:: Application to NH3K3C60 -: art. no. 115107 [J].

Manini, N ;

Santoro, GE ;

Dal Corso, A ;

Tosatti, E .

PHYSICAL REVIEW B, 2002, 66 (11) :1151071-1151077

[24] Electronic structure and orbital ordering in perovskite-type 3d transition-metal oxides studied by Hartree-Fock band-structure calculations [J].

Mizokawa, T ;

Fujimori, A .

PHYSICAL REVIEW B, 1996, 54 (08) :5368-5380

[25] Interplay between orbital ordering and lattice distortions in LaMnO3, YVO3, and YTiO3 [J].

Mizokawa, T ;

Khomskii, DI ;

Sawatzky, GA .

PHYSICAL REVIEW B, 1999, 60 (10) :7309-7313

[26] Orbital-spin structure and lattice coupling in RTiO3 where R=La, Pr, Nd, and Sm -: art. no. 167203 [J].

Mochizuki, M ;

Imada, M .

PHYSICAL REVIEW LETTERS, 2003, 91 (16)

[27] Photoemission spectral weight distribution in Y1-xCaxTiO3 [J].

Morikawa, K ;

Mizokawa, T ;

Fujimori, A ;

Taguchi, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 1996, 54 (12) :8446-8451

[28]

NEKRASOV IA, CONDMAT0211508

[29] OPTICAL-SPECTRA IN (LA,Y)TIO3 - VARIATION OF MOTT-HUBBARD GAP FEATURES WITH CHANGE OF ELECTRON CORRELATION AND BAND FILLING [J].

OKIMOTO, Y ;

KATSUFUJI, T ;

OKADA, Y ;

ARIMA, T ;

TOKURA, Y .

PHYSICAL REVIEW B, 1995, 51 (15) :9581-9588

[30] PREPARATION AND STRUCTURE OF THE COMPOUNDS SRVO3 AND SR2VO4 [J].

REY, MJ ;

DEHAUDT, P ;

JOUBERT, JC ;

LAMBERTANDRON, B ;

CYROT, M ;

CYROTLACKMANN, F .

JOURNAL OF SOLID STATE CHEMISTRY, 1990, 86 (01) :101-108

← 1 2 3 4 →