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Resonant neutron scattering on the high Tc cuprates and pi and eta excitation of the t-J and Hubbard models
Strongly Correlated Electrons · Submitted 11 Mar 1999
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We review the explanation for resonant neutron scattering experiments in $YBa_2Cu_3O_{6+\delta}$ and $Bi_2 Sr_2 Ca_2 O_{8+\delta}$ materials from the point of view of triplet excitation in the particle-particle channel, the pi excitation.
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The abstract, sentence by sentence
We review the explanation for resonant neutron scattering experiments in $YBa_2Cu_3O_{6+\delta}$ and $Bi_2 Sr_2 Ca_2 O_{8+\delta}$ materials from the point of view of triplet excitation in the particle-particle channel, the pi excitation. Relation of these resonances to the superconducting condensation energy and their role in stabilizing the superconducting state is discussed. Due to the superconducting fluctuations, the pi resonance may appear as a broad peak above Tc. Analogue problem to the pi excitation for the case of s-wave pairing, the eta excitation, is considered in the strong coupling limit with an emphasis on the resonance precursors in a state with no long range order.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We review the explanation for resonant neutron scattering experiments in $YBa_2Cu_3O_{6+\delta}$ and $Bi_2 Sr_2 Ca_2 O_{8+\delta}$ materials from the point of view of triplet excitation in the particle-particle channel, the pi excitation. | contribution 0.87 | 0.18 | 0.18 | asserted 0.72 |
| s1 | Relation of these resonances to the superconducting condensation energy and their role in stabilizing the superconducting state is discussed. | contribution 0.67 | 0.31 | 0.11 | unclear 0.62 |
| s2 | Due to the superconducting fluctuations, the pi resonance may appear as a broad peak above Tc. | result 0.59 | 0.23 | 0.11 | hedged possibility 1.00 |
| s3 | Analogue problem to the pi excitation for the case of s-wave pairing, the eta excitation, is considered in the strong coupling limit with an emphasis on the resonance precursors in a state with no long range order. | contribution 0.98 | 0.59 | 0.08 | asserted 0.75 |
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Original abstract
We review the explanation for resonant neutron scattering experiments in $YBa_2Cu_3O_{6+\delta}$ and $Bi_2 Sr_2 Ca_2 O_{8+\delta}$ materials from the point of view of triplet excitation in the particle-particle channel, the pi excitation. Relation of these resonances to the superconducting condensation energy and their role in stabilizing the superconducting state is discussed. Due to the superconducting fluctuations, the pi resonance may appear as a broad peak above Tc. Analogue problem to the pi excitation for the case of s-wave pairing, the eta excitation, is considered in the strong coupling limit with an emphasis on the resonance precursors in a state with no long range order.
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