Defects in Quasi-One Dimensional Oxide Conductors: K0.3MoO3

1994 ◽  
Vol 375 ◽  
Author(s):  
Kevin E. Smith ◽  
Klaus Breuer ◽  
David Goldberg ◽  
Martha Greenblatt ◽  
William McCarroll ◽  
...  
Keyword(s):  
Electronic Structure ◽  
High Resolution ◽  
Ground State ◽  
Charge Density Wave ◽  
Density Wave ◽  
Luttinger Liquid ◽  
Photoemission Spectroscopy ◽  
One Dimensional ◽  
Low Emission ◽  
Peierls Transition

AbstractThe electronic structure of the prototypical quasi-one dimensional (1D) conductor K03MoO3 has been studied using high resolution photoemission spectroscopy. In particular, the electronic structure of defects was investigated in order to understand the mechanism for charge density wave pinning and destruction of the Peierls transition. Defects were found to radically alter the electronic structure close to the Fermi level (EF), thus strongly modifying the structure of the Fermi surface. While a low emission intensity at EF has been interpreted as evidence for a Luttinger liquid ground state in a ID metal, we show that non-stoichiometric surfaces lead to similar effects. The nature of the ground state is discussed in the context of these results.

scholarly journals Band-selective Holstein polaron in Luttinger liquid material A0.3MoO3 (A = K, Rb)

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
L. Kang ◽  
X. Du ◽  
J. S. Zhou ◽  
X. Gu ◽  
Y. J. Chen ◽  
...  
Keyword(s):  
Charge Density ◽  
Electronic Properties ◽  
Charge Density Wave ◽  
Density Wave ◽  
Luttinger Liquid ◽  
Phonon Coupling ◽  
Strong Electron ◽  
One Dimensional ◽  
Molybdenum Blue ◽  
Electron Phonon Coupling

Abstract(Quasi-)one-dimensional systems exhibit various fascinating properties such as Luttinger liquid behavior, Peierls transition, novel topological phases, and the accommodation of unique quasiparticles (e.g., spinon, holon, and soliton, etc.). Here we study molybdenum blue bronze A0.3MoO3 (A = K, Rb), a canonical quasi-one-dimensional charge-density-wave material, using laser-based angle-resolved photoemission spectroscopy. Our experiment suggests that the normal phase of A0.3MoO3 is a prototypical Luttinger liquid, from which the charge-density-wave emerges with decreasing temperature. Prominently, we observe strong renormalizations of band dispersions, which are recognized as the spectral function of Holstein polaron derived from band-selective electron-phonon coupling in the system. We argue that the strong electron-phonon coupling plays an important role in electronic properties and the charge-density-wave transition in blue bronzes. Our results not only reconcile the long-standing heavy debates on the electronic properties of blue bronzes but also provide a rare platform to study interesting excitations in Luttinger liquid materials.

CHARGE DENSITY WAVE PROPERTIES OF MOLYBDENUM BRONZES

1993 ◽  
Vol 07 (23n24) ◽  
pp. 4045-4108 ◽  
Author(s):  
JEAN DUMAS ◽  
CLAIRE SCHLENKER
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Spin Density Wave ◽  
Superconducting Properties ◽  
One Dimensional ◽  
Peierls Transition ◽  
Blue Bronze ◽  
Low Dimensional ◽  
Wave Properties

The physical properties of the low dimensional molybdenum bronzes showing charge density wave (CDW) instabilities are reviewed. The mechanisms of the Peierls transition, CDW and spin density wave (SDW) instabilities are first introduced. The properties of the quasi-one-dimensional (1D) blue bronze, A 0.30 MoO 3, including non linear transport due to the depinning of the incommensurate CDW, are described. The transport properties and the effect of pressure on the superconducting properties of the quasi-1D Li purple bronze Li 0.9 Mo 6 O 17 are reported. Finally, one presents the properties of the commensurate CDW state of the quasi-2D purple bronze KMo 6 O 17, especially under high magnetic field and hydrostatic pressure.

scholarly journals Spectroscopic Evidence for a Three-Dimensional Charge Density Wave in Kagome Superconductor CsV3Sb5

2021 ◽  
Author(s):  
Cong Li ◽  
Xianxin Wu ◽  
Hongxiong Liu ◽  
Craig Polley ◽  
Qinda Guo ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Three Dimensional ◽  
Photoemission Spectroscopy ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Quantum Well State ◽  
First Time ◽  
The Relationship

Abstract The recently discovered AV3Sb5 (A=K, Rb, Cs) family, possessing V kagome nets, has received considerable attention due to the topological electronic structure and intriguing correlated phenomena, including an exotic charge density wave (CDW) and superconductivity. Detailed electronic structure studies are essential to unravel the characteristics and origin of the CDW as well as its interplay with superconductivity. Here, we present angle-resolved photoemission spectroscopy (ARPES) measurements for CsV3Sb5 at multiple temperatures and photon energies to reveal the nature of the CDW from an electronic structure perspective. We present evidence for a three-dimensional (3D) CDW order. In the process we also pinpoint a surface state attributed to a Cs terminated surface. This state was previously attributed to band folding band due to a CDW along the c direction or a quantum well state from quantum confinement. The CDW expected 2-fold lattice reconstruction along c axis is observed to be a quadrupling of the unit cell, thus for the first time directly demonstrating the 3D nature of the CDW from the electronic structure perspective. Moreover, this 3D CDW configuration originates from two distinct types of distortions in adjacent kagome layers. These present results not only provide key insights into the nature of the unconventional CDW in CsV3Sb5 but also provides an important reference for further studies on the relationship between the CDW and superconductivity.

Pseudogap of Charge-Density-Wave Compound SmNiC2Studied by High-Resolution Photoemission Spectroscopy

2010 ◽  
Vol 79 (4) ◽  
pp. 044707 ◽  
Author(s):  
Takafumi Sato ◽  
Seigo Souma ◽  
Kosuke Nakayama ◽  
Takashi Takahashi ◽  
Susumu Shimomura ◽  
...  
Keyword(s):  
High Resolution ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Photoemission Spectroscopy

scholarly journals Luttinger liquid versus charge density wave behaviour in the one-dimensional spinless fermion Holstein model

2005 ◽  
Vol 359-361 ◽  
pp. 699-701 ◽  
Author(s):  
H. Fehske ◽  
G. Wellein ◽  
G. Hager ◽  
A. Weiße ◽  
K.W. Becker ◽  
...  
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Luttinger Liquid ◽  
One Dimensional ◽  
Spinless Fermion ◽  
Holstein Model ◽  
The One
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