scholarly journals Semimetal-to-semiconductor transition and charge-density-wave suppression in 1T−TiSe2−xSx single crystals

2019 ◽  
Vol 99 (15) ◽  
Author(s):  
M.-L. Mottas ◽  
T. Jaouen ◽  
B. Hildebrand ◽  
M. Rumo ◽  
F. Vanini ◽  
...  
Keyword(s):  
Charge Density ◽  
Single Crystals ◽  
Charge Density Wave ◽  
Density Wave

scholarly journals Dimensional crossover of charge density wave and thermoelectric properties in CeTe2−xSbx single crystals

2012 ◽  
Vol 101 (14) ◽  
pp. 143901 ◽  
Author(s):  
Kyung Eun Lee ◽  
Byeong Hun Min ◽  
Jong-Soo Rhyee ◽  
Jae Nyeong Kim ◽  
Ji Hoon Shim ◽  
...  
Keyword(s):  
Charge Density ◽  
Single Crystals ◽  
Thermoelectric Properties ◽  
Charge Density Wave ◽  
Density Wave ◽  
Dimensional Crossover

Coexistence of superconductivity and commensurate charge density wave in 4Hb-TaS2−xSex single crystals

2014 ◽  
Vol 115 (4) ◽  
pp. 043915 ◽  
Author(s):  
Y. Liu ◽  
L. J. Li ◽  
W. J. Lu ◽  
R. Ang ◽  
X. Z. Liu ◽  
...  
Keyword(s):  
Charge Density ◽  
Single Crystals ◽  
Charge Density Wave ◽  
Density Wave

scholarly journals 1D charge density wave in the hidden order state of URu2Si2

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Edwin Herrera ◽  
Víctor Barrena ◽  
Isabel Guillamón ◽  
José Augusto Galvis ◽  
William J. Herrera ◽  
...  
Keyword(s):  
Charge Density ◽  
Single Crystals ◽  
Charge Density Wave ◽  
Density Wave ◽  
Scanning Tunneling ◽  
Temperature Phase ◽  
Tunneling Microscopy ◽  
Flat Surfaces ◽  
Fracture Dynamics ◽  
Hidden Order

AbstractSingle crystals of URu2Si2 show below 17.5 K a transition into an ordered state with a significantly reduced entropy. The low temperature phase is called the hidden order (HO) state, because its microscopic origin is still unknown—there are no charge, structural or magnetic transitions associated to HO. Here we report a one-dimensional (1D) charge modulation within the HO state of URu2Si2. We perform detailed Scanning Tunneling Microscopy (STM) experiments with high resolution on many atomically flat surfaces of URu2Si2 obtained by fracturing single crystals at cryogenic temperatures and find a 1D charge density wave with a large wavevector. We show that the 1D modulation is connected to the dynamical magnetic excitations of the HO through a moiré construction and appears as a consequence of excitations quenched through the interaction between the travelling fracture front and the dynamic modes of the crystal. The combination of fracture dynamics and the dynamics of the solid provides a method to create ground states and shows that charge interactions are among the most relevant features competing with HO in URu2Si2.

QUASI-ONE-DIMENSIONAL SUPERCONDUCTIVITY IN Sc5Ir4Si10 AND Lu5Ir4Si10 SINGLE CRYSTALS

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3334-3339 ◽  
Author(s):  
T. TAMEGAI ◽  
G. J. LI
Keyword(s):  
Fermi Surface ◽  
Charge Density ◽  
Single Crystals ◽  
Charge Density Wave ◽  
Density Wave ◽  
Anisotropy Parameter ◽  
Superconducting Transition ◽  
Superconducting Properties ◽  
Subtle Difference ◽  
One Dimensional

Anisotropic superconducting properties in Sc 5 Ir 4 Si 10 and Lu 5 Ir 4 Si 10 single crystals are investigated. Both of these compounds are found to show quasi-one-dimensional superconductivity with better conduction along the c-axis and anisotropy parameter of about 2. Reflecting the partial destruction of the Fermi surface due to charge-density-wave formation, Lu 5 Ir 4 Si 10 shows higher residual resistivity, lower superconducting transition temperature, and longer magnetic penetration depths compared with those of Sc 5 Ir 4 Si 10. Similarity of superconducting properties including the anisotropy in Sc 5 Ir 4 Si 10 and Lu 5 Ir 4 Si 10 indicates that the absence of the charge-density wave in Sc 5 Ir 4 Si 10 is controlled by a subtle difference in the Fermi surface topologies in these two compounds.

scholarly journals Second-order charge-density-wave transition in single crystals of La3Co4Sn13

2019 ◽  
Vol 3 (12) ◽  
Author(s):  
Johannes Welsch ◽  
Sitaram Ramakrishnan ◽  
Claudio Eisele ◽  
Natalija van Well ◽  
Andreas Schönleber ◽  
...  
Keyword(s):  
Charge Density ◽  
Single Crystals ◽  
Charge Density Wave ◽  
Density Wave ◽  
Second Order

scholarly journals Charge-density-wave in 1T-TiSe2: exciton-phonon separation by femtosecond valence band dynamics

2019 ◽  
Vol 205 ◽  
pp. 04008
Author(s):  
H. Hedayat ◽  
D. Bugini ◽  
S. Karbassi ◽  
S. Friedmann ◽  
J. van Wezel ◽  
...  
Keyword(s):  
Charge Density ◽  
Single Crystals ◽  
Valence Band ◽  
Charge Density Wave ◽  
Density Wave ◽  
Driving Mechanism

We investigate the driving mechanism leading to charge-density-wave transition in 1T-TiSe2 single crystals. Our results show that both exciton instability and phonons cooperate to develop the charge ordered phase below 202 K.

scholarly journals Competition of superconductivity and charge density wave order in NaxTaS2 single crystals

2005 ◽  
Vol 6 (7) ◽  
pp. 736-739 ◽  
Author(s):  
L. Fang ◽  
P.Y. Zou ◽  
Y. Wang ◽  
L. Tang ◽  
Z. Xu ◽  
...  
Keyword(s):  
Charge Density ◽  
Single Crystals ◽  
Charge Density Wave ◽  
Density Wave

Incommensurate modulated phases of the NbxTa1-xTe4 charge density wave system

1992 ◽  
Vol 50 (1) ◽  
pp. 58-59
Author(s):  
S. Ritchie ◽  
J. C. Bennett ◽  
A. Prodan ◽  
F.W. Boswell ◽  
J.M. Corbett
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Direct Evidence ◽  
Density Wave ◽  
Wave System ◽  
Modulated Phases ◽  
Metal Atoms ◽  
Incommensurate Modulation ◽  
End Members ◽  
Modulation Wave Vector

A continuous sequence of compounds having composition NbxTa1-xTe4; 0 ≤ x ≤ 1 have been studied by electron diffraction and microscopy. Previous studies have shown that the end members of the series, TaTε4 and NbTε4 possess a quasi-one-dimensional character and exhibit charge density wave (CDW) distortions. In these compounds, the subcell structure is tetragonal with axes (a × a × c) and consists of the metal atoms (Nb or Ta) centered within an extended antiprismatic cage of Te atoms. At room temperature, TaTε4 has a commensurate modulation structure with a 2a × 2a × 3c unit cell. In NbTε4, an incommensurate modulation with × ∼ 16c axes is observed. Preliminary studies of the mixed compounds NbxTα1-xTε4 showed a discontinuous jump of the modulation wave vector commensurate to incommensurate when the Nb dopant concentration x, exceeded x ≃ 0.3, In this paper, the nature of the compositional dependence of is studied in greater detail and evidence is presented for a stepwise variation of . This constitutes the first direct evidence for a Devil's staircase in CDW materials.

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