Quasi-one-dimensional metallic band dispersion in the commensurate charge density wave of 1T-TaS2

被引：48

作者：

Ngankeu, Arlette S. ^{[1
]}

Mahatha, Sanjoy K. ^{[1
]}

Guilloy, Kevin ^{[1
]}

Bianchi, Marco ^{[1
]}

Sanders, Charlotte E. ^{[1
]}

Hanff, Kerstin ^{[2
]}

Rossnagel, Kai ^{[2
]}

Miwa, Jill A. ^{[1
]}

Nielsen, Christina Breth ^{[3
]}

Bremholm, Martin ^{[3
]}

Hofmann, Philip ^{[1
]}

机构：

[1] Aarhus Univ, Dept Phys & Astron, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus C, Denmark

[2] Univ Kiel, Inst Expt & Appl Phys, Kiel, Germany

[3] Univ Aarhus, Dept Chem, Aarhus, Denmark

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 19期

关键词：

ANGLE-RESOLVED PHOTOEMISSION; QUANTUM SPIN LIQUID; DICHALCOGENIDES; TEMPERATURE;

D O I：

10.1103/PhysRevB.96.195147

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The commensurate charge-density wave (CDW) in the layered compound 1T-TaS2 has hitherto mostly been treated as a quasi-two-dimensional phenomenon. Recent band structure calculations have, however, predicted that the CDW coexists with a nearly one-dimensional metallic dispersion perpendicular to the crystal planes. Using synchrotron radiation-based angle-resolved photoemission spectroscopy, we show that this metallic band does in fact exist. Its occupied band width is in excellent agreement with predictions for a simple tau(c) stacking order of the CDW between adjacent layers, and its periodicity in the c direction is 2 pi/c.

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页数：5

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