X-ray scattering on charge-density-wave superconductor 2H-NbSe2
نویسندگان
چکیده
منابع مشابه
Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe2.
We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe2 that we measure by scanning tunneling spectroscopic imaging. We show, from the momentum and energy dependence of the quasiparticle interference, that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe2. We demonst...
متن کاملVisualizing the charge density wave transition in 2H-NbSe2 in real space
C. J. Arguello,1,* S. P. Chockalingam,1,* E. P. Rosenthal,1 L. Zhao,1 C. Gutiérrez,1 J. H. Kang,1 W. C. Chung,1 R. M. Fernandes,1 S. Jia,2 A. J. Millis,1 R. J. Cava,2 and A. N. Pasupathy1 1Department of Physics, Columbia University, New York, New York 10027, USA 2Department of Chemistry, Princeton University, Princeton, New Jersey 08540, USA (Received 1 July 2013; revised manuscript received 4 ...
متن کاملEmergence of coherence in the charge-density wave state of 2H-NbSe2
A charge-density wave (CDW) state has a broken symmetry described by a complex order parameter with an amplitude and a phase. The conventional view, based on clean, weak-coupling systems, is that a finite amplitude and long-range phase coherence set in simultaneously at the CDW transition temperature T(cdw). Here we investigate, using photoemission, X-ray scattering and scanning tunnelling micr...
متن کاملX-ray multiple-wave coherent interaction in a quasi-two-dimensional material NbSe2-2H.
The first observation of the X-ray multiple-wave interaction in an incommensurate charge-density-wave (CDW) modulated structure at low temperatures is reported for an example of a quasi-two-dimensional material, NbSe(2)-2H. Via the coherent interaction between the X-ray waves propagating in the CDW-modulated structure and the host structure, the phase-dependent intensity variations of a CDW ref...
متن کاملQuasiparticle spectra, charge-density waves, superconductivity, and electron-phonon coupling in 2H-NbSe2.
High-resolution photoemission has been used to study the electronic structure of the charge-density wave (CDW) and superconducting dichalcogenide, 2H-NbSe2. From the extracted self-energies, important components of the quasiparticle interactions have been identified. In contrast to previously studied TaSe2, the CDW transition does not affect the electronic properties significantly. The electron...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2009
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/150/4/042029