Comments for Journal Club for Condensed Matter Physics

Comment on Electric field control of high-Tc cuprates in the entire doping range by alloul

alloul — Fri, 02 Dec 2011 10:58:48 +0000

I have looked with interest to the commentary by Fujimori about the field effect control of the doping in cuprates.

I have no doubt that these experiments represent a very interesting progress which we have been waiting for many years now. This opens novel possibilities for superconductivity driven components and might certainly result in scientific applications and hopefully in technical ones as well.

I am however somewhat sceptical and would even seriously disagree about the comment done by Fujimori: “Unlike chemical doping, disorder remains unchanged by the electric field doping.”

This is in my opinion a wishful thinking for a one layer thickness material. Idealizing the materials is always an easy trend in the scientific community. Any material scientist should be aware that defects and complications always arise. For instance the charges accumulating in the interface layer which drive the “uniform” electric field in the layer will certainly be trapped at some defects of the interface, and new locations will be favoured when the field is modified.

I take as an example, for instance, the study of the metal insulator transition (MIT) in the underdoped samples. The work we have done a few years ago (1) on the incidence of disorder on the MIT in single crystals demonstrated that the MIT is driven by disorder as it depends markedly on the considered cuprate family, so that the observation of a MIT in these one layer thick samples is really by itself a confirmation that disorder is present. It probably has even more incidence than in single crystals of the cleanest cuprate families.

One can always dream, but I am probably on the pessimistic side, and we know that similar dreams have not been achieved so far in single crystals after more than 20 years of hard work, even if real improvements have been achieved.

(1) F. Rullier-Albenque, H. Alloul, F. Balakirev and C. Proust, “Disorder, Metal-Insulator crossover and Phase Diagram in High-Tc cuprates”, Europhysics Lett. 81, 37008 (2008).

Comment on The Mode-Coupling Theory of supercooled liquids: Does it wear any clothes? by MILLEV

MILLEV — Sun, 27 Jun 2010 21:05:58 +0000

Re: your # 2 paper ->
The Letter by Ikeda & Miyazaki has just been published on 25 June 2010:

Mode-Coupling Theory as a Mean-Field Description of the Glass Transition
Atsushi Ikeda and Kunimasa Miyazaki
Phys. Rev. Lett. 104, 255704 (2010)

Best,
Yonko Millev

Comment on The Mode-Coupling Theory of supercooled liquids: Does it wear any clothes? by MILLEV

MILLEV — Wed, 23 Jun 2010 13:13:23 +0000

Paper #2 by Ikeda & Miyazaki has been accepted in PRL:

Mode-coupling theory as a mean-field description of the glass transition
Atsushi Ikeda and Kunimasa Miyazaki
Accepted Tuesday Jun 01, 2010

http://prl.aps.org/accepted

It will appear in early July 2009.

Best,

Yonko Millev

Comment on The Mode-Coupling Theory of supercooled liquids: Does it wear any clothes? by MILLEV

MILLEV — Wed, 23 Jun 2010 13:03:41 +0000

Paper #1, ” Glass transition of hard spheres in high dimensions” by Schmid & Schillig, has been published in Physical Review E:

Phys. Rev. E 81, 041502 (2010).

Best,
Yonko Millev

Comment on Is there liquid-vapor opalescence at the Mott transition? by MILLEV

MILLEV — Wed, 23 Jun 2010 12:54:23 +0000

The paper, arXiv:10044898, has just been published
in Physical Review Letters:

L. Bartosch et al, Phys. Rev. Lett. 104, 245701 (2010)

Best,

Yonko Millev

Comment on Current Selections by Intrinsic decoherence is a scientific truth | Phasing

Intrinsic decoherence is a scientific truth | Phasing — Fri, 02 Oct 2009 03:21:03 +0000

[...] that my view of decoherence, intrinsic decoherence, is indeed a scientific truth. Periodically, the Journal Club of Condensed Matter physics theory presents an interesting selection of published papers in the area of condensed state of matter. [...]

Comment on End-to-End Stacking and Liquid Crystal Condensation of 6- to 20- Base Pair DNA Duplexes by Cool Papers 1: General « {metadatta}

Cool Papers 1: General « {metadatta} — Mon, 11 Feb 2008 01:08:07 +0000

[...] 2. Liquid Crystals and the Origins of Life Noel Clark gave a great talk about this work here at Penn not too long ago. I won’t write too much about this since Randy has a nice description of it over at the condmat journal club. [...]

Comment on Oscillation Frequency Dependence of Non-classical Rotational Inertia of Solid 4He by Yonko Millev

Yonko Millev — Mon, 30 Jul 2007 13:59:17 +0000

Published in Phys. Rev. Lett. 99, 015301 (2007)

Comment on Observation of Electron-Hole Puddles in Graphene Using a Scanning Single Electron Transistor by Yonko Millev

Yonko Millev — Fri, 27 Jul 2007 17:46:29 +0000

This manuscript has already been published
in Physical Review Letters:

Phys. Rev. Lett. 99, 015301 (2007)

(cf prl.aps.org)

Regards,
Yonko Millev

Comment on Interference between two independent electrons: observation of two-particle Aharonov-Bohm interference by moty heiblum

moty heiblum — Thu, 12 Jul 2007 07:59:21 +0000

Published in Nature, July 19th, with ‘News & Views’.