### Abstract

Superconducting phase diagram of the extended Hubbard model supplemented with interaction and hopping terms exceeding the nearest-neighbour distance in range is analysed systematically at different band filling and temperature values in a mean-field approximation. The obtained results clearly emphasize the importance of next-nearest-neighbour terms in developing the main superconducting phases of different symmetries at a given point of the phase diagram; in particular, critical temperatures T_{c}, zero temperature gap amplitude values Δ_{0}, Δ_{0}/T_{c} ratios, doping and temperature dependences are all strongly influenced by next-nearest-neighbour contributions.

Original language | English |
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Pages (from-to) | 911-928 |

Number of pages | 18 |

Journal | Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties |

Volume | 76 |

Issue number | 6 |

Publication status | Published - Dec 1997 |

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### ASJC Scopus subject areas

- Chemical Engineering(all)
- Physics and Astronomy(all)

### Cite this

**Superconductivity in the extended Hubbard model with more than nearest-neighbour contributions.** / Szabó, Zsolt; Gulácsi, Z.

Research output: Contribution to journal › Article

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TY - JOUR

T1 - Superconductivity in the extended Hubbard model with more than nearest-neighbour contributions

AU - Szabó, Zsolt

AU - Gulácsi, Z.

PY - 1997/12

Y1 - 1997/12

N2 - Superconducting phase diagram of the extended Hubbard model supplemented with interaction and hopping terms exceeding the nearest-neighbour distance in range is analysed systematically at different band filling and temperature values in a mean-field approximation. The obtained results clearly emphasize the importance of next-nearest-neighbour terms in developing the main superconducting phases of different symmetries at a given point of the phase diagram; in particular, critical temperatures Tc, zero temperature gap amplitude values Δ0, Δ0/Tc ratios, doping and temperature dependences are all strongly influenced by next-nearest-neighbour contributions.

AB - Superconducting phase diagram of the extended Hubbard model supplemented with interaction and hopping terms exceeding the nearest-neighbour distance in range is analysed systematically at different band filling and temperature values in a mean-field approximation. The obtained results clearly emphasize the importance of next-nearest-neighbour terms in developing the main superconducting phases of different symmetries at a given point of the phase diagram; in particular, critical temperatures Tc, zero temperature gap amplitude values Δ0, Δ0/Tc ratios, doping and temperature dependences are all strongly influenced by next-nearest-neighbour contributions.

UR - http://www.scopus.com/inward/record.url?scp=0011156706&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0011156706&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0011156706

VL - 76

SP - 911

EP - 928

JO - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties

JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties

SN - 1364-2812

IS - 6

ER -