Effect of electron-phonon coupling in the ARPES spectra of the tri-layer cuprate Bi2Sr2Ca2Cu3O10+,
Effect of electron-phonon coupling in the ARPES spectra of the tri-layer cuprate Bi2Sr2Ca2Cu3O10+,
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电子-声子耦合对三层铜酸盐 Bi2Sr2Ca2Cu3O10 ARPES 谱的影响
DOI：
10.1088/1742-6596/428/1/012039
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
S. Ideta
中科院分区：
文献类型：
--
作者：
Kazuma Nakamura;Ryotaro Arita;Yoshiro Nohara;Takehito Nakano;Yasuo Nozue;S. Ideta
利用可调谐低能光子的角度分辨光谱学，我们可以在三层铜酸铋（Bi2223）中分别研究内外CuO{sub 2}面（IP和OP）的准粒子色散。在各种高温度的铜酸盐中，OP带的扭结能约为70 meV，而在超导（SC）状态下，IP带的扭结能约为100 meV。这种大的扭结能量归因于{大约}35 meV的屈曲模式加上IP的大（{大约}60 meV） SC间隙。在SC状态下，IP波段在{约}70 meV处也表现出弱扭结特征。如果涉及到QP的层间散射，后一种特征可以用70 meV的半呼吸模式或{大约}35 meV的buckle -声子模式加上OP{大约}40 meV的SC间隙来解释。
Angle-resolved photoemission spectroscopy using tunable low energy photons allows us to study the quasi-particle (QP) dispersions of the inner and outer CuO{sub 2} planes (IP and OP) separately in the tri-layer cuprate Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta}} (Bi2223). The kink energy of the OP band is {approx} 70 meV, as observed in various high-T{sub c} cuprates, while that of the IP band is as large as {approx} 100 meV in the superconducting (SC) state. This large kink energy is attributed to the {approx}35 meV buckling mode plus the large ({approx} 60 meV) SC gap of IP. The IP band also shows a weak kink feature at {approx} 70 meV in the SC state. The latter feature can be explained either by the 70 meV half-breathing mode or by the {approx} 35 meV buckling-phonon mode plus the {approx} 40 meV SC gap of OP if interlayer scattering of QP is involved.