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Probing the singlet...
Probing the singlet character of the two-hole states in cuprate superconductors
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Ghiringhelli, G. (författare)
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Brookes, N. B. (författare)
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Tjeng, L. H. (författare)
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Mizokawa, T. (författare)
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- Tjernberg, Oscar (författare)
- KTH,Mikroelektronik och informationsteknik, IMIT
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Steeneken, P. G. (författare)
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Menovsky, A. A. (författare)
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(creator_code:org_t)
- 2002
- 2002
- Engelska.
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Ingår i: Physica. B, Condensed matter. - 0921-4526 .- 1873-2135. ; 312, s. 34-35
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Using spin-resolved resonant photoemission we have probed the singlet vs. triplet character of the two-hole state in the layered cuprates Bi2Sr2CaCu2O8+delta 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.
Nyckelord
- Zhang-rice singlet
- cuprate
- photoemission
- spin
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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