Probing the singlet character of the two-hole states in cuprate superconductors

G. Ghiringhelli; N. B. Brookes; L. H. Tjeng; T. Mizokawa; O. Tjernberg; P. G. Steeneken; A. A. Menovsky

doi:10.1016/S0921-4526(01)01488-0

Probing the singlet character of the two-hole states in cuprate superconductors

G. Ghiringhelli^*, N. B. Brookes, L. H. Tjeng, T. Mizokawa, O. Tjernberg, P. G. Steeneken, A. A. Menovsky

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

7 Citations (Scopus)

Abstract

Using spin-resolved resonant photoemission we have probed the singlet vs. triplet character of the two-hole state in the layered cuprates Bi₂Sr₂CaCu₂O_8+δ, La_2-xSr_xCuO₄ and Sr₂CuO₂Cl₂. The combination of the photon circular polarization with the photoelectron spin detection gives access to the character of the photoemission final states, which correspond to the two-hole configurations localized at a (CuO₄) site. In particular, the lowest energy state is found to have a very high singlet character in all the measured compounds. This can be considered as a strong indication of the existence and stability of the so-called Zhang-Rice singlets in the layered cuprates.

Original language	English
Pages (from-to)	34-35
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	312-313
DOIs	https://doi.org/10.1016/S0921-4526(01)01488-0
Publication status	Published - 2002 Mar
Externally published	Yes
Event	International Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States Duration: 2002 Aug 6 → 2002 Aug 6

Keywords

Cuprate
Photoemission
Zhang-Rice singlet

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(01)01488-0

Cite this

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title = "Probing the singlet character of the two-hole states in cuprate superconductors",

abstract = "Using spin-resolved resonant photoemission we have probed the singlet vs. triplet character of the two-hole state in the layered cuprates Bi2Sr2CaCu2O8+δ, La2-xSrxCuO4 and Sr2CuO2Cl2. The combination of the photon circular polarization with the photoelectron spin detection gives access to the character of the photoemission final states, which correspond to the two-hole configurations localized at a (CuO4) site. In particular, the lowest energy state is found to have a very high singlet character in all the measured compounds. This can be considered as a strong indication of the existence and stability of the so-called Zhang-Rice singlets in the layered cuprates.",

keywords = "Cuprate, Photoemission, Zhang-Rice singlet",

author = "G. Ghiringhelli and Brookes, {N. B.} and Tjeng, {L. H.} and T. Mizokawa and O. Tjernberg and Steeneken, {P. G.} and Menovsky, {A. A.}",

year = "2002",

month = mar,

doi = "10.1016/S0921-4526(01)01488-0",

language = "English",

volume = "312-313",

pages = "34--35",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - Probing the singlet character of the two-hole states in cuprate superconductors

AU - Ghiringhelli, G.

AU - Brookes, N. B.

AU - Tjeng, L. H.

AU - Mizokawa, T.

AU - Tjernberg, O.

AU - Steeneken, P. G.

AU - Menovsky, A. A.

PY - 2002/3

Y1 - 2002/3

N2 - Using spin-resolved resonant photoemission we have probed the singlet vs. triplet character of the two-hole state in the layered cuprates Bi2Sr2CaCu2O8+δ, La2-xSrxCuO4 and Sr2CuO2Cl2. The combination of the photon circular polarization with the photoelectron spin detection gives access to the character of the photoemission final states, which correspond to the two-hole configurations localized at a (CuO4) site. In particular, the lowest energy state is found to have a very high singlet character in all the measured compounds. This can be considered as a strong indication of the existence and stability of the so-called Zhang-Rice singlets in the layered cuprates.

AB - Using spin-resolved resonant photoemission we have probed the singlet vs. triplet character of the two-hole state in the layered cuprates Bi2Sr2CaCu2O8+δ, La2-xSrxCuO4 and Sr2CuO2Cl2. The combination of the photon circular polarization with the photoelectron spin detection gives access to the character of the photoemission final states, which correspond to the two-hole configurations localized at a (CuO4) site. In particular, the lowest energy state is found to have a very high singlet character in all the measured compounds. This can be considered as a strong indication of the existence and stability of the so-called Zhang-Rice singlets in the layered cuprates.

KW - Cuprate

KW - Photoemission

KW - Zhang-Rice singlet

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U2 - 10.1016/S0921-4526(01)01488-0

DO - 10.1016/S0921-4526(01)01488-0

M3 - Conference article

AN - SCOPUS:0036503353

SN - 0921-4526

VL - 312-313

SP - 34

EP - 35

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - International Conference on Strongly Correlated Electrons

Y2 - 6 August 2002 through 6 August 2002

ER -

Probing the singlet character of the two-hole states in cuprate superconductors

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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