Intermediate-Valence Behavior of YbCu5-xAlxaround Quantum Critical Point Measured by Resonant Inelastic X-ray Scattering at YbL3Absorption Edge

2007 ◽  
Vol 76 (12) ◽  
pp. 124705 ◽  
Author(s):  
Kazuya Yamamoto ◽  
Hitoshi Yamaoka ◽  
Naohito Tsujii ◽  
Aurel Mihai Vlaicu ◽  
Hirofumi Oohashi ◽  
...  
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Intermediate Valence ◽  
X Ray ◽  
X Ray Scattering ◽  
Quantum Critical ◽  
Ray Scattering

Intermediate valence in Yb compounds probed by 4fphotoemission and resonant inelastic x-ray scattering

2011 ◽  
Vol 84 (24) ◽  
Author(s):  
K. Kummer ◽  
Yu. Kucherenko ◽  
S. Danzenbächer ◽  
C. Krellner ◽  
C. Geibel ◽  
...  
Keyword(s):  
Intermediate Valence ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals Small angle X-ray scattering measurements for expanded fluid Se near the critical point

1999 ◽  
Vol 250-252 ◽  
pp. 531-536 ◽  
Author(s):  
M. Inui ◽  
Y. Oh'ishi ◽  
I. Nakaso ◽  
M.H. Kazi ◽  
K. Tamura
Keyword(s):  
Critical Point ◽  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Measurements ◽  
Ray Scattering

Charge redistribution and a shortening of the Fe—As bond at the quantum critical point of SmO1–xFxFeAs

2015 ◽  
Vol 22 (4) ◽  
pp. 1030-1034 ◽  
Author(s):  
Jie Cheng ◽  
Peng Dong ◽  
Wei Xu ◽  
Shengli Liu ◽  
Wangsheng Chu ◽  
...  
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Charge Redistribution ◽  
Edge Structure ◽  
X Ray ◽  
Feas Layer ◽  
Shoulder Peak ◽  
Quantum Critical ◽  
X Ray Absorption ◽  
Evident Relationship

Many researchers have pointed out that there is a quantum critical point (QCP) in the F-doped SmOFeAs system. In this paper, the electronic structure and local structure of the superconductive FeAs layer in SmO1–xFxFeAs as a function of the F-doping concentration have been investigated using Fe and AsK-edge X-ray absorption spectroscopy. Experiments performed on the X-ray absorption near-edge structure showed that in the vicinity of the QCP the intensity of the pre-edge feature at the Fe-edge decreases continuously, while there is a striking rise of the shoulder-peak at the As edge, suggesting the occurrence of charge redistribution near the QCP. Further analysis on the AsK-edge extended X-ray absorption fine structure demonstrated that the charge redistribution originates mostly from a shortening of the Fe—As bond at the QCP. An evident relationship between the mysterious QCP and the fundamental Fe—As bond was established, providing new insights on the interplay between QCP, charge dynamics and the local structural Fe—As bond in Fe-based superconductors.

scholarly journals 4f-Derived Fermi Surfaces ofCeRu2(Si1−xGex)2near the Quantum Critical Point: Resonant Soft-X-Ray ARPES Study

2009 ◽  
Vol 102 (21) ◽  
Author(s):  
T. Okane ◽  
T. Ohkochi ◽  
Y. Takeda ◽  
S.-i. Fujimori ◽  
A. Yasui ◽  
...  
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Fermi Surfaces ◽  
X Ray ◽  
Quantum Critical

scholarly journals Scale-invariant magnetic textures in the strongly correlated oxide NdNiO3

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jiarui Li ◽  
Jonathan Pelliciari ◽  
Claudio Mazzoli ◽  
Sara Catalano ◽  
Forrest Simmons ◽  
...  
Keyword(s):  
Critical Point ◽  
Magnetic Transition ◽  
Magnetic Fabric ◽  
Quantum Solids ◽  
Strongly Correlated ◽  
Scale Invariant ◽  
X Ray ◽  
X Ray Scattering ◽  
Antiferromagnetic Domains ◽  
Ray Scattering

Abstract Strongly correlated quantum solids are characterized by an inherently granular electronic fabric, with spatial patterns that can span multiple length scales in proximity to a critical point. Here, we use a resonant magnetic X-ray scattering nanoprobe with sub-100 nm spatial resolution to directly visualize the texture of antiferromagnetic domains in NdNiO3. Surprisingly, our measurements reveal a highly textured magnetic fabric, which we show to be robust and nonvolatile even after thermal erasure across its ordering temperature. The scale-free distribution of antiferromagnetic domains and its non-integral dimensionality point to a hitherto-unobserved magnetic fractal geometry in this system. These scale-invariant textures directly reflect the continuous nature of the magnetic transition and the proximity of this system to a critical point. The present study not only exposes the near-critical behavior in rare earth nickelates but also underscores the potential for X-ray scattering nanoprobes to image the multiscale signatures of criticality near a critical point.

scholarly journals Possible quantum fluctuations in the vicinity of the quantum critical point of (Sr,Ca)3Ir4Sn13 revealed by high-energy x-ray diffraction

2020 ◽  
Vol 101 (10) ◽  
Author(s):  
L. S. I. Veiga ◽  
J. R. L. Mardegan ◽  
M. v. Zimmermann ◽  
D. T. Maimone ◽  
F. B. Carneiro ◽  
...  
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Quantum Fluctuations ◽  
High Energy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Quantum Critical
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