Two-step evolution of the quasiparticle band with doping in the two-dimensional t-t[prime]-t[double prime]-J model

Conference · Sun Dec 20 04:00:00 EST 1998 · International Journal of Modern Physics B

OSTI ID:6442772

Gong, C D ^[1]; Yin, W G ^[2]; Leung, P W ^[3]

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1. CCAST, Beijing (China) Nanjing Univ. (China). National Key Lab. of Solid States of Microstructure
2. CCAST , Beijing (China) Nanjing Univ. (China). National Key Lab. of Solid states of Microstructure Hong Kong Univ. of Science and Technology, Clear Water Bay (Hong Kong). Dept. of Physics
3. Hong Kong Univ. of Science and Technology, Clear Water Bay (Hong Kong). Dept. of Physics

The authors study the doping dependence of photoemission spectra for the t-t[prime]-t[double prime]-J model by using the exact diagonalization technique and present a consistent theoretical analysis. Both calculations show that upon doping the enhancement of incoherent motion of holes due to the t[prime] and t[double prime] terms accounts for the formation of the flat region around ([pi], 0) in the quasiparticle dispersion at underdoped and optimally doped region, despite the absence of the flat band at half filling. The results are in excellent agreement with resent photoemission experiments on Bi[sub 2]Sr[sub 2]Ca[sup 1]Cu[sub 2]O[sub 8+[delta]] and Sr[sub 2]CuO[sub 2]Cl[sub 2].

• OSTI ID: 6442772
• Report Number(s): CONF-980291--
• Conference Information: Journal Name: International Journal of Modern Physics B Journal Volume: 12:29-31
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COPPER CHLORIDES
COPPER COMPOUNDS
COPPER HALIDES
COPPER OXIDES
DOPED MATERIALS
ELECTRONIC STRUCTURE
HALIDES
HALOGEN COMPOUNDS
HIGH-TC SUPERCONDUCTORS
MATERIALS
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
STRONTIUM CHLORIDES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS