Fermi-surface and low-energy excitation spectrum of YBa2Cu3O7

Role of the Ba-O plane

I. I. Mazin, O. Jepsen, O. K. Andersen, A. I. Liechtenstein, Sergey Rashkeev, Y. A. Uspenskii

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We present evidence for the existence of two close-lying, nearly parallel energy bands in the vicinity of the Fermi level in YBa2Cu3O7. The electrons in these bands are located in the Ba-O planes and have nearly no Cu-O chain or plane components. The higher band is partially unoccupied and the corresponding Fermi surface was recently measured by the de Haas van Alphen effect. We have calculated the extremal Fermi-surface areas and the results are in excellent agreement with experiment, when spin splitting in high magnetic field is taken into account. We show furthermore that interband transitions for in-plane polarizations are allowed between these two bands and that they result in a sharp peak at about 350 cm-1 in our calculated optical conductivity.

Original languageEnglish
Pages (from-to)5103-5106
Number of pages4
JournalPhysical Review B
Volume45
Issue number9
DOIs
Publication statusPublished - 1 Dec 1992
Externally publishedYes

Fingerprint

Fermi surface
Excitation energy
Fermi surfaces
Optical conductivity
Fermi level
Band structure
excitation
Polarization
Magnetic fields
energy bands
energy
Electrons
conductivity
Experiments
polarization
magnetic fields
barium copper yttrium oxide
electrons

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Mazin, I. I., Jepsen, O., Andersen, O. K., Liechtenstein, A. I., Rashkeev, S., & Uspenskii, Y. A. (1992). Fermi-surface and low-energy excitation spectrum of YBa2Cu3O7: Role of the Ba-O plane. Physical Review B, 45(9), 5103-5106. https://doi.org/10.1103/PhysRevB.45.5103

Fermi-surface and low-energy excitation spectrum of YBa2Cu3O7 : Role of the Ba-O plane. / Mazin, I. I.; Jepsen, O.; Andersen, O. K.; Liechtenstein, A. I.; Rashkeev, Sergey; Uspenskii, Y. A.

In: Physical Review B, Vol. 45, No. 9, 01.12.1992, p. 5103-5106.

Research output: Contribution to journalArticle

Mazin, II, Jepsen, O, Andersen, OK, Liechtenstein, AI, Rashkeev, S & Uspenskii, YA 1992, 'Fermi-surface and low-energy excitation spectrum of YBa2Cu3O7: Role of the Ba-O plane', Physical Review B, vol. 45, no. 9, pp. 5103-5106. https://doi.org/10.1103/PhysRevB.45.5103
Mazin, I. I. ; Jepsen, O. ; Andersen, O. K. ; Liechtenstein, A. I. ; Rashkeev, Sergey ; Uspenskii, Y. A. / Fermi-surface and low-energy excitation spectrum of YBa2Cu3O7 : Role of the Ba-O plane. In: Physical Review B. 1992 ; Vol. 45, No. 9. pp. 5103-5106.
@article{af74fb6ae3db43ae933d9f251043d839,
title = "Fermi-surface and low-energy excitation spectrum of YBa2Cu3O7: Role of the Ba-O plane",
abstract = "We present evidence for the existence of two close-lying, nearly parallel energy bands in the vicinity of the Fermi level in YBa2Cu3O7. The electrons in these bands are located in the Ba-O planes and have nearly no Cu-O chain or plane components. The higher band is partially unoccupied and the corresponding Fermi surface was recently measured by the de Haas van Alphen effect. We have calculated the extremal Fermi-surface areas and the results are in excellent agreement with experiment, when spin splitting in high magnetic field is taken into account. We show furthermore that interband transitions for in-plane polarizations are allowed between these two bands and that they result in a sharp peak at about 350 cm-1 in our calculated optical conductivity.",
author = "Mazin, {I. I.} and O. Jepsen and Andersen, {O. K.} and Liechtenstein, {A. I.} and Sergey Rashkeev and Uspenskii, {Y. A.}",
year = "1992",
month = "12",
day = "1",
doi = "10.1103/PhysRevB.45.5103",
language = "English",
volume = "45",
pages = "5103--5106",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

TY - JOUR

T1 - Fermi-surface and low-energy excitation spectrum of YBa2Cu3O7

T2 - Role of the Ba-O plane

AU - Mazin, I. I.

AU - Jepsen, O.

AU - Andersen, O. K.

AU - Liechtenstein, A. I.

AU - Rashkeev, Sergey

AU - Uspenskii, Y. A.

PY - 1992/12/1

Y1 - 1992/12/1

N2 - We present evidence for the existence of two close-lying, nearly parallel energy bands in the vicinity of the Fermi level in YBa2Cu3O7. The electrons in these bands are located in the Ba-O planes and have nearly no Cu-O chain or plane components. The higher band is partially unoccupied and the corresponding Fermi surface was recently measured by the de Haas van Alphen effect. We have calculated the extremal Fermi-surface areas and the results are in excellent agreement with experiment, when spin splitting in high magnetic field is taken into account. We show furthermore that interband transitions for in-plane polarizations are allowed between these two bands and that they result in a sharp peak at about 350 cm-1 in our calculated optical conductivity.

AB - We present evidence for the existence of two close-lying, nearly parallel energy bands in the vicinity of the Fermi level in YBa2Cu3O7. The electrons in these bands are located in the Ba-O planes and have nearly no Cu-O chain or plane components. The higher band is partially unoccupied and the corresponding Fermi surface was recently measured by the de Haas van Alphen effect. We have calculated the extremal Fermi-surface areas and the results are in excellent agreement with experiment, when spin splitting in high magnetic field is taken into account. We show furthermore that interband transitions for in-plane polarizations are allowed between these two bands and that they result in a sharp peak at about 350 cm-1 in our calculated optical conductivity.

UR - http://www.scopus.com/inward/record.url?scp=0542414417&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0542414417&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.45.5103

DO - 10.1103/PhysRevB.45.5103

M3 - Article

VL - 45

SP - 5103

EP - 5106

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 9

ER -