Spin-resolved photoemission anti-ferromagnets: Direct observation of Zhang-Rice singlets in CuO

L H Tjeng; B Sinkovic; N B Brookes; J B Goedkoop; R Hesper; E Pellegrin; F M F de Groot; S Altieri; S L Hulbert; E Shekel; G A Sawatzky

doi:10.1103/physrevlett.78.1126

Spin-resolved photoemission anti-ferromagnets: Direct observation of Zhang-Rice singlets in CuO

L H Tjeng^*, B Sinkovic, N B Brookes, J B Goedkoop, R Hesper, E Pellegrin, F M F de Groot, S Altieri, S L Hulbert, E Shekel, G A Sawatzky

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

We demonstrate that it is possible to obtain spin-resolved valence band spectra with a very high degree of spin polarization from antiferromagnetic transition metal materials if the excitation light is circularly polarized and has an energy close to the cation 2p(3/2) (L(3)) white line. We are able to unravel the different spin states in the single-particle excitation spectrum of CuO and show that the top of the valence band is of pure singlet character, which provides strong support for the existence and stability of Zhang-Rice singlets in high-T-c superconductors.

Original language	English
Pages (from-to)	1126-1129
Number of pages	4
Journal	Physical Review Letters
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/physrevlett.78.1126
Publication status	Published - 10-Feb-1997

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title = "Spin-resolved photoemission anti-ferromagnets: Direct observation of Zhang-Rice singlets in CuO",

abstract = "We demonstrate that it is possible to obtain spin-resolved valence band spectra with a very high degree of spin polarization from antiferromagnetic transition metal materials if the excitation light is circularly polarized and has an energy close to the cation 2p(3/2) (L(3)) white line. We are able to unravel the different spin states in the single-particle excitation spectrum of CuO and show that the top of the valence band is of pure singlet character, which provides strong support for the existence and stability of Zhang-Rice singlets in high-T-c superconductors.",

author = "Tjeng, {L H} and B Sinkovic and Brookes, {N B} and Goedkoop, {J B} and R Hesper and E Pellegrin and {de Groot}, {F M F} and S Altieri and Hulbert, {S L} and E Shekel and Sawatzky, {G A}",

note = "Journal FEB 10 WG888 PHYS REV LETT",

year = "1997",

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day = "10",

doi = "10.1103/physrevlett.78.1126",

language = "English",

volume = "78",

pages = "1126--1129",

journal = "Physical Review Letters",

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TY - JOUR

T1 - Spin-resolved photoemission anti-ferromagnets

T2 - Direct observation of Zhang-Rice singlets in CuO

AU - Tjeng, L H

AU - Sinkovic, B

AU - Brookes, N B

AU - Goedkoop, J B

AU - Hesper, R

AU - Pellegrin, E

AU - de Groot, F M F

AU - Altieri, S

AU - Hulbert, S L

AU - Shekel, E

AU - Sawatzky, G A

N1 - Journal FEB 10 WG888 PHYS REV LETT

PY - 1997/2/10

Y1 - 1997/2/10

N2 - We demonstrate that it is possible to obtain spin-resolved valence band spectra with a very high degree of spin polarization from antiferromagnetic transition metal materials if the excitation light is circularly polarized and has an energy close to the cation 2p(3/2) (L(3)) white line. We are able to unravel the different spin states in the single-particle excitation spectrum of CuO and show that the top of the valence band is of pure singlet character, which provides strong support for the existence and stability of Zhang-Rice singlets in high-T-c superconductors.

AB - We demonstrate that it is possible to obtain spin-resolved valence band spectra with a very high degree of spin polarization from antiferromagnetic transition metal materials if the excitation light is circularly polarized and has an energy close to the cation 2p(3/2) (L(3)) white line. We are able to unravel the different spin states in the single-particle excitation spectrum of CuO and show that the top of the valence band is of pure singlet character, which provides strong support for the existence and stability of Zhang-Rice singlets in high-T-c superconductors.

U2 - 10.1103/physrevlett.78.1126

DO - 10.1103/physrevlett.78.1126

M3 - Article

SN - 0031-9007

VL - 78

SP - 1126

EP - 1129

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

ER -

Spin-resolved photoemission anti-ferromagnets: Direct observation of Zhang-Rice singlets in CuO

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