Scholar iON
Academic Synthesis
The selected scholarly papers from the "cond-mat.mtrl-sci" archive highlight ongoing debates and critiques within the field of condensed matter physics, particularly concerning the accuracy and interpretation of theoretical models and their alignment with experimental data. A common theme among these works is the rigorous scrutiny of previous findings, as seen in Contucci and Giardina's critique of Hed and Domany's numerical experiments on the Edwards-Anderson spin glass model, emphasizing the importance of thermodynamic limits in resolving finite-size system discrepancies. Moreover, Kastrinakis and Kroha with Zawadowski address inconsistencies between theoretical predictions and empirical data, underscoring the contentious nature of aligning theoretical models with experimental observations. The discourse exemplifies the dynamic nature of scientific inquiry, where continuous peer review and dialogue contribute to refining theoretical frameworks and ensuring they accurately reflect complex physical phenomena.
We comment on recent numerical experiments by G.Hed and E.Domany [cond-mat/0608535v2] on the quenched equilibrium state of the Edwards-Anderson spin glass model. The rigorous proof of overlap identities related to replica equivalence shows that the observed violations of those identities on finite size systems must vanish in the thermodynamic limit. See also the successive version cond-mat/0608535v4
The inconsistency of cond-mat/0007299 and Phys. Rev. B 63 094510 (2001) with ARPES and resistivity data is pointed-out.
Samuely et al. (cond-mat/0503153) make the strong claim that our letter is 'contradicting several established experimental results'. As we will show below this is not justified and the claims from are based on a misinterpretation of our results.
An inadequate approximation and its consequences as well as an incorrect statement made in cond-mat/0102150v2 are pointed out.
We comment on various incorrect claims made in a recent paper by Grosu et al. (cond-mat/0101392).
In a recent preprint (cond-mat/0601398), D. Funfschilling and G. Ahlers describe a new effect, that they interpret as non-Boussinesq, in a convection cell working with ethane, near its critical point. They argue that such an effect could have spoiled the Chavanne {\it et al.} (Phys. Rev. Lett. {\bf 79} 3648, 1997) results, and not the Niemela {\it et al.} (Nature, {\bf 404}, 837, 2000) ones, which would explain the differences between these two experiments. We show that:-i)Restricting the Chavanne's data to situations as far from the critical point than the Niemela's one, the same discrepancy remains.-ii)The helium data of Chavanne show no indication of the effect observed by D. Funfschilling and G. Ahlers.
This document provides detailed descriptions of data acquisition and data analysis in support of the accompanying Article, cond-mat/0610721: Observation of the two-channel Kondo effect.
Some of the most intriguing problems in solid state physics arise when the motion of one electron dramatically affects the motion of surrounding electrons. Traditionally, such highly-correlated electron systems have been studied mainly in materials with complex transition metal chemistry. Over the past decade, researchers have learned to confine one or a few electrons within a nanoscale semiconductor "artificial atom", and to understand and control this simple system in exquisite detail. In the accompanying Article, we combine such individually well-understood components to create a novel highly-correlated electron system within a nano-engineered semiconductor structure. We tune the system in situ through a quantum phase transition between two distinct states, one familiar and one subtly new. The boundary between these states is a quantum critical point: the exotic and previously elusive two-channel Kondo state, in which electrons in two reservoirs are entangled through their interaction with a single localized spin.
We reply to the comment by K. Aryanpour, Th. Maier and M. Jarrell (cond-mat/0301460) on our paper (Phys. Rev. B {\bf 65} 155112 (2002)). We demonstrate using general arguments and explicit examples that whenever the correlation length is finite, local observables converge exponentially fast in the cluster size, $L_{c}$, within Cellular Dynamical Mean Field Theory (CDMFT). This is a faster rate of convergence than the $1/L_{c}^{2}$ behavior of the Dynamical Cluster approximation (DCA) thus refuting the central assertion of their comment.
Reply to the recent comment by I.Ispolatov and M.Karttunen, cond-mat/0303564
This submission is a duplicate of cond-mat/0608646.