Charge density wave, superconductivity, and anomalous metallic behavior in 2D transition metal dichalcogenides

被引:409
作者
Castro Neto, AH [1 ]
机构
[1] Boston Univ, Dept Phys, Boston, MA 02215 USA
关键词
D O I
10.1103/PhysRevLett.86.4382
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We propose a theory for quasi-two-dimensional transition metal dichalcogenides that provides a unified microscopic picture of the charge density wave (CDW) and superconducting phases. We show, based on the electron-phonon coupling and Fermi surface topology, that a CDW order parameter with sixfold symmetry and nodes (f-wave) gives a consistent description of the available experimental data. The elementary excitations in the CDW phase are Dirac electrons. The superconducting state has its origin on the attractive interaction mediated by phonons. The theory predicts strong deviations from Fermi liquid theory in the CDW phase.
引用
收藏
页码:4382 / 4385
页数:4
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