Electron spectra close to a metal-to-insulator transition

被引：52

作者：

Karski, M

Raas, C

Uhrig, GS

机构：

[1] Univ Bonn, Inst Angew Phys, D-53115 Bonn, Germany

[2] Univ Saarland, Theoret Phys FR 71, D-66123 Saarbrucken, Germany

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.72.113110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A high-resolution investigation of the electron spectra close to the metal-to-insulator transition in dynamic mean-field theory is presented. An all-numerical, consistent confirmation of a smooth transition at zero temperature is provided. In particular, the separation of energy scales is verified. Unexpectedly, sharp peaks at the inner Hubbard band edges occur in the metallic regime. They are signatures of the important interaction between single-particle excitations and collective modes.

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页数：4

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共 34 条

[1] Ground state of the frustrated Hubbard model within DMFT:: energetics of Mott insulator and metal from ePT and QMC [J].

Blümer, N ;

Kalinowski, E .

PHYSICA B-CONDENSED MATTER, 2005, 359 :648-650

[2] Mott insulator:: Tenth-order perturbation theory extended to infinite order using a quantum Monte Carlo scheme -: art. no. 195102 [J].

Blümer, N ;

Kalinowski, E .

PHYSICAL REVIEW B, 2005, 71 (19)

[3]

Blumer N., 2002, Ph.D. thesis

[4] Linearized dynamical mean-field theory for the Mott-Hubbard transition [J].

Bulla, R ;

Potthoff, M .

EUROPEAN PHYSICAL JOURNAL B, 2000, 13 (02) :257-264

[5] Zero temperature metal-insulator transition in the infinite-dimensional Hubbard model [J].

Bulla, R .

PHYSICAL REVIEW LETTERS, 1999, 83 (01) :136-139

[6] Finite-temperature numerical renormalization group study of the Mott transition [J].

Bulla, R ;

Costi, TA ;

Vollhardt, D .

PHYSICAL REVIEW B, 2001, 64 (04)

[7]

BULLA R, COMMUNICATION

[8] SO(5) theory of antiferromagnetism and superconductivity [J].

Demler, E ;

Hanke, W ;

Zhang, SC .

REVIEWS OF MODERN PHYSICS, 2004, 76 (03) :909-974

[9] Analytical and numerical treatment of the Mott-Hubbard insulator in infinite dimensions [J].

Eastwood, MP ;

Gebhard, F ;

Kalinowski, E ;

Nishimoto, S ;

Noack, RM .

EUROPEAN PHYSICAL JOURNAL B, 2003, 35 (02) :155-175

[10] Dynamical mean field theory with the density matrix renormalization group -: art. no. 246403 [J].

García, DJ ;

Hallberg, K ;

Rozenberg, MJ .

PHYSICAL REVIEW LETTERS, 2004, 93 (24)

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