Electronic structure of Sr2RuO4

被引：2

作者：

Noce, C ^{[1
]}

Cuoco, M ^{[1
]}

机构：

[1] Univ Salerno, Dipartimento Sci Fis ER Caianiello, Unita INFM, I-84081 Baronissi, Italy

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1999年 / 13卷 / 9-10期

关键词：

D O I：

10.1142/S0217979299001119

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We introduce a microscopic model for the compound Sr2RuO4, which is at the present the only known layered-perovskite superconductor without copper. The one-particle Hamiltonian is deduced by means of an approach that combines the extended Huckel theory and the tight-binding method. Adding two-body terms to this Hamiltonian, as the local Coulomb interaction and the Hund coupling, the magnetic properties are determined. It is found that the system is close to a ferromagnetic instability and this result supports a superconducting phase with p-wave symmetry.

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页码：1157 / 1162

页数：6

相关论文

共 21 条

[1] Orbital dependent superconductivity in Sr2RuO4 [J].

Agterberg, DF ;

Rice, TM ;

Sigrist, M .

PHYSICAL REVIEW LETTERS, 1997, 78 (17) :3374-3377

[2] LDA energy bands, low-energy Hamiltonians, t', t'', t perpendicular to(k), and J perpendicular to. [J].

Andersen, OK ;

Liechtenstein, AI ;

Jepsen, O ;

Paulsen, F .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1995, 56 (12) :1573-1591

[3] Why is Sr2RuO4 not a high T-c superconductor? Electron correlation, Hund's coupling and p-wave instability [J].

Baskaran, G .

PHYSICA B-CONDENSED MATTER, 1996, 223-24 (1-4) :490-495

[4] Interplay between Hund coupling and Hubbard interaction in Sr2RuO4 [J].

Cuoco, M ;

Noce, C ;

Romano, A .

PHYSICAL REVIEW B, 1998, 57 (19) :11989-11993

[5]

HOFFMANN R, 1963, J CHEM PHYS, V39, P1937

[6] Normal-state magnetoresistance of Sr2RuO4 [J].

Hussey, NE ;

Mackenzie, AP ;

Cooper, JR ;

Maeno, Y ;

Nishizaki, S ;

Fujita, T .

PHYSICAL REVIEW B, 1998, 57 (09) :5505-5511

[7] Redistribution of the spectral intensity in a layered 4d-electron superconductor Sr2RuO4 observed by the photoemission spectroscopy [J].

Inoue, IH ;

Aiura, Y ;

Nishihara, Y ;

Haruyama, Y ;

Nishizaki, S ;

Maeno, Y ;

Fujita, T ;

Bednorz, JG ;

Lichtenberg, F .

PHYSICA B-CONDENSED MATTER, 1996, 223-24 (1-4) :516-518

[8] Spin-triplet superconductivity in Sr2RuO4 identified by 17O Knight shift [J].

Ishida, K ;

Mukuda, H ;

Kitaoka, Y ;

Asayama, K ;

Mao, ZQ ;

Mori, Y ;

Maeno, Y .

NATURE, 1998, 396 (6712) :658-660

[9] SR2RUO4 - A METALLIC SUBSTRATE FOR THE EPITAXIAL-GROWTH OF YBA2CU3O7-DELTA [J].

LICHTENBERG, F ;

CATANA, A ;

MANNHART, J ;

SCHLOM, DG .

APPLIED PHYSICS LETTERS, 1992, 60 (09) :1138-1140

[10] Time-reversal symmetry breaking superconductivity in Sr2RuO4 [J].

Luke, GM ;

Fudamoto, Y ;

Kojima, KM ;

Larkin, MI ;

Merrin, J ;

Nachumi, B ;

Uemura, YJ ;

Maeno, Y ;

Mao, ZQ ;

Mori, Y ;

Nakamura, H ;

Sigrist, M .

NATURE, 1998, 394 (6693) :558-561