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We review angle resolved photoemission spectroscopy (ARPES) results on the high Tc superconductors, focusing primarily on results obtained on the quasi-two dimensional cuprate Bi2Sr2CaCu2O8 and its single layer counterpart Bi2Sr2CuO6. The…

超导电性 · 物理学 2007-05-23 J. C. Campuzano , M. R. Norman , M. Randeria

The electronic structure near the Fermi level (EF) of Ba1-xKxFe2As2 (BaK122 ; x = 0.2 - 0.7) is studied using laser ultrahigh-resolution angle-resolved photoemission spectroscopy(ARPES). For the optimally doped case of x = 0.4, we clearly…

Ultrafast time-resolved optical spectroscopy in high-temperature superconductors enables the direct real-time measurement of non-equilibrium quasiparticle recombination dynamics. In addition, it also gives detailed information about the…

超导电性 · 物理学 2007-05-23 D. Mihailovic , J. Demsar

We studied the temperature dependences of the optical spectra for optimally and underdoped Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+z}$ single crystals. Similarly to the other cuprates' cases, a gap-like conductivity suppression was observed with…

Angle-resolved photoemission spectroscopy (ARPES), an experimental technique based on the photoelectric effect, is arguably the most powerful method for probing the electronic structure of solids. The past decade has witnessed notable…

材料科学 · 物理学 2021-06-21 Baiqing Lv , Tian Qian , Hong Ding

This treatise reviews latest results obtained from angle-resolved photoemission spectroscopy (ARPES) on cuprate superconductors, with a special focus on the electron-phonon interaction. What has emerged is rich information about the…

强关联电子 · 物理学 2009-09-29 X. J. Zhou , T. Cuk , T. Devereaux , N. Nagaosa , Z. -X. Shen

We analyze the ultra high resolution laser angle resolved photo-emission spectroscopy (ARPES) intensity from the slightly underdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ in the superconductive (SC) state. The momentum distribution curves…

超导电性 · 物理学 2015-05-30 Jae Hyun Yun , Jin Mo Bok , Han-Yong Choi , Wentao Zhang , X. J. Zhou , Chandra M. Varma

We present a minimal model for cuprate superconductors. At the unrestricted mean-field level, the model produces homogeneous superconductivity at large doping, striped superconductivity in the underdoped regime and various antiferromagnetic…

超导电性 · 物理学 2009-10-31 Ivar Martin , Gerardo Ortiz , A. V. Balatsky , A. R. Bishop

Angle resolved photoemission spectroscopy (ARPES) enables direct observation of the Fermi surface and underlying electronic structure of crystals---the basic concepts to describe all the electronic properties of solids and to understand the…

超导电性 · 物理学 2014-06-12 A. A. Kordyuk

Recently, noncentrosymmetric superconductor BiPd has attracted considerable research interest due to the possibility of hosting topological superconductivity. Here we report a systematic high-resolution angle-resolved photoemission…

We take advantage of the connection between the free carrier optical conductivity and the glue function in the normal state, to reconstruct from the infrared optical conductivity the glue-spectrum of ten different high-Tc cuprates revealing…

Superconductivity is realized by opening a gap in the superconducting state. The gap symmetry is crucial in understanding the underlying superconductivity mechanism. The magnitude and the phase are essential in fully characterizing the…

Angle resolved photoemission (ARPES) data from the electron doped cuprate superconductor Sm$_{1.86}$Ce$_{0.14}$CuO$_4$ shows a much stronger pseudo-gap or "hot-spot" effect than that observed in other optimally doped $n$-type cuprates.…

超导电性 · 物理学 2009-11-11 S. R. Park , Y. S. Roh , Y. K. Yoon , C. S. Leem , J. H. Kim , B. J. Kim , H. Koh , H. Eisaki , N. P. Armitage , C. Kim

Both electronic Raman scattering (ERS) and angle-resolved photoemission spectra (ARPES) revealed two energy scales for the gap in different momentum spaces in the cuprates. However, the interpretations were different, and the gap values…

The spectral energy gap is an important signature that defines states of quantum matter: insulators, density waves, and superconductors have very different gap structures. The momentum resolved nature of angle-resolved photoemission…

超导电性 · 物理学 2015-03-03 Makoto Hashimoto , Inna M. Vishik , Rui-Hua He , Thomas P. Devereaux , Zhi-Xun Shen

In contrast to a complex feature of antinodal state, suffering from competing order(s), the "pure" pairing gap of cuprates is obtained in the nodal region, which therefore holds the key to the superconducting mechanism. One of the biggest…

超导电性 · 物理学 2015-07-16 Takeshi Kondo , W. Malaeb , Y. Ishida , T. Sasagawa , H. Sakamoto , Tsunehiro Takeuchi , T. Tohyama , S. Shin

Recently there has been an accumulation of experimental evidence in the high temperature superconductors suggesting the relevance of electron-phonon coupling in these materials. These findings challenge some well-held beliefs of what…

超导电性 · 物理学 2007-05-23 T. P. Devereaux , T. Cuk , Z. -X. Shen , N. Nagaosa

We report on the ab-plane reflectance of the high temperature superconductor Bi2Sr2CaCu2O8+d (Bi-2212). Samples spanning the doping range from under doped with Tc = 67 K(UD), to optimally doped with Tc = 96 K (OPT), to over doped with Tc =…

超导电性 · 物理学 2015-06-25 J. Hwang , T. Timusk , G. D. Gu

We discuss selected results from our recent work concerning the ARPES (angle-resolved photoemission) spectra from the cuprates. Our focus is on developing an understanding of the effects of the ARPES matrix element and those of strong…

超导电性 · 物理学 2009-11-10 A. Bansil , R. S. Markiewicz , C. Kusko , M. Lindroos , S. Sahrakorpi

Angle-resolved photoemission spectroscopy (ARPES) is one of most powerful techniques to unravel the electronic properties of layered materials and in the last decades it has lead to a significant progress in the understanding of the band…

强关联电子 · 物理学 2015-07-02 R. Wallauer , S. Sanna , E. Lahoud , P. Carretta , A. Kanigel