tag:blogger.com,1999:blog-22973357.post1782049032221989800..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: Röser's equationSabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger26125tag:blogger.com,1999:blog-22973357.post-36469967512103580192009-07-31T09:52:00.169-04:002009-07-31T09:52:00.169-04:00A remarkably interesting relation, and such a prec...A remarkably interesting relation, and such a precise fit to the known data. I had not seen this before. Thanks for sharing!Tumbledriedhttps://www.blogger.com/profile/16241184018261772902noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-21856340165859058542009-07-30T17:34:50.294-04:002009-07-30T17:34:50.294-04:00This correlation simply means, temperature of HT s...This correlation simply means, temperature of HT superconductivity transition is driven by pure geometry, i.e. density of electrons, which are compressed mutually in superconductor lattice.Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-3292775785153523962009-07-30T14:47:35.773-04:002009-07-30T14:47:35.773-04:00Hello,
The Materials on the lower left
side with ...Hello,<br />The Materials on the lower left <br />side with Bi, Tl or Yttrium <br />plus some Number as a name are <br />Cuprates. <br />This correlation is much too precise <br />for not having a "meaning". <br />GeorgGeorghttps://www.blogger.com/profile/02538391164351204407noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-88521643756568609272009-07-30T14:02:43.319-04:002009-07-30T14:02:43.319-04:00Yes, you are right. I guess somehow I only noticed...Yes, you are right. I guess somehow I only noticed that one of the papers concerns Fe, the other CuPeter Orlandhttp://hetcosmo.nbi.dk/peter.htmlnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-50622307195558982552009-07-30T12:22:27.794-04:002009-07-30T12:22:27.794-04:00/*..they only claim this for iron-based high-Tc ma.../*..they only claim this for iron-based high-Tc materials. This suggests that this formula doesn't apply to the cuprates...*/<br /><br />Nope, they don't:<br /><br />"...This equation was used to test the correlation for various kinds of HTSCs, including oxygen deficiency doping and cuprates. The Tc used was always the center of the transition by using the mean of the onset Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-62367047072251756652009-07-30T10:50:31.386-04:002009-07-30T10:50:31.386-04:00No, I don't know the data well enough. But the...No, I don't know the data well enough. But the papers only concern Fe-based materials. If they had something similar for the cuprates, the authors probably would have said so.Peter Orlandnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-51489423074301568672009-07-30T10:47:48.806-04:002009-07-30T10:47:48.806-04:00Do you happen to have a data point for these that ...Do you happen to have a data point for these that doesn't fit on the curve?Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-77106189249075440272009-07-30T10:45:57.147-04:002009-07-30T10:45:57.147-04:00It is interesting that they only claim this for ir...It is interesting that they only claim this for iron-based high-Tc materials. This suggests that this formula doesn't apply to the cuprates.Peter Orlandnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-61057749756311094692009-07-29T10:35:48.173-04:002009-07-29T10:35:48.173-04:00Well, you're welcome to do on your blog what y...Well, you're welcome to do on your blog what you want, but if you come here, you play according to my rules, or you don't play.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-40949271178458204312009-07-29T10:33:22.877-04:002009-07-29T10:33:22.877-04:00/*..you miss the point. This is my blog...*/
I'.../*..you miss the point. This is my blog...*/<br />I've "my blog" too and I'm not prohibiting anybody in promotion of private theories and ideas. <br /><br />It means, while I respect your private property and decision - I really don't think, it's a true reason of your stance. It's just a (necessary) condition of it.Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-65710807898157463872009-07-29T07:02:54.222-04:002009-07-29T07:02:54.222-04:00Hi Phil,
I assume this is where the de Broglie w...Hi Phil,<br /><br /><i> I assume this is where the de Broglie wavelength consideration comes into play. </i><br /><br />There is no derivation of the equation, it's pretty much hand assembled. The significance of it is that previously you wouldn't have known where the jump temperature of the crystal is before you measured it. Best,<br /><br />B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-47217565507819399272009-07-29T06:58:54.245-04:002009-07-29T06:58:54.245-04:00Zephir: You miss the point. This is my blog. It...Zephir: You miss the point. This is my blog. It's not your advertisement platform. Period. I don't care if you promote Nike Shoes, Dating Hotlines or a handmade GUT - if you leave links to promote your site, I will delete them.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-9811963850277486462009-07-29T06:36:49.061-04:002009-07-29T06:36:49.061-04:00Hi Bee,
First, let me say that you never had me t...Hi Bee,<br /><br />First, let me say that you never had me to be confused, for if anything your explanation gave me at least what the researcher had accomplished in discovering some sort of mathematical correlation between doping distance and temperature. What I meant to say is if I had simply read the paper I woudn’t have had much of a clue what he had discovered. So I thank you for giving me atPhil Warnellhttps://www.blogger.com/profile/15671311338712852659noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-56263126885103582922009-07-28T20:54:38.554-04:002009-07-28T20:54:38.554-04:00/*..during the last weeks I've deleted several.../*..during the last weeks I've deleted several of your comments ..*/<br />It's no secret, for contemporary scientists is more important to read explanation in mainstream press then to read it at all, because they're not interested about explanations at all, but about system, which provides and maintains salary for them. The [1:33 AM, July 28] just correlates this stance at another Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-56224695370970283402009-07-28T11:36:22.466-04:002009-07-28T11:36:22.466-04:00Oompf, the German word is of course "Dotierun...Oompf, the German word is of course "Dotierungsdistanz," sorry, jetlag.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-34770327900983379002009-07-28T11:33:13.295-04:002009-07-28T11:33:13.295-04:00Hi Phil,
Well, it certainly hasn't been my in...Hi Phil,<br /><br />Well, it certainly hasn't been my intention to confuse you. The x-axis actually shows the inverse of the temperature where superconductivity sets in (multiplied by some constants). I'm not perfectly sure myself what the doping distance is, not even if that's the right word (the German word is "Dotierungsdistance"). It's roughly the distance between Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-250916882295258572009-07-28T11:20:24.139-04:002009-07-28T11:20:24.139-04:00Zephir: During the last weeks I've deleted sev...Zephir: During the last weeks I've deleted several of your comments and another one in this comment section. Would you please keep in mind that our blog is not the place to promote your own theory of whatever. As to your problem with mainstream science, you possibly don't find a verification because there has been no verification.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-58193341959721075092009-07-28T07:04:30.386-04:002009-07-28T07:04:30.386-04:00Hi Bee,
Well I have to hand it to you, for you’ve...Hi Bee,<br /><br />Well I have to hand it to you, for you’ve finally pointed to a paper which I can’t make much sense out of, beginning with what the graph is an indication to demonstrate. I understand that the X axis has something to do with doping distance within a crystal (whatever that is) and the Y axis somehow relates to the point in temperature when superconductivity sets in. However, Phil Warnellhttps://www.blogger.com/profile/15671311338712852659noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-702362582494104212009-07-28T05:25:58.465-04:002009-07-28T05:25:58.465-04:00Hi Sabine, hi Stefan,
in the theory of HTS one st...Hi Sabine, hi Stefan,<br /><br />in the theory of HTS one still searches for the elementary excitations which are able to produce HTS at these temperatures. Also of course the crystal symmetries or also broken symmetries are interesting for the theorists.<br /><br />Greetings <br /><br />Kay zum FeldeAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-73201527157639372402009-07-28T04:20:54.109-04:002009-07-28T04:20:54.109-04:00Very interesting, indeed. Brings back memories fro...Very interesting, indeed. Brings back memories from my teenage research days: mixing highTc ceramic ingredients with a mortar and pestle, measuring their properties ... lots of fun. Hmmm.Keahttps://www.blogger.com/profile/05652514294703722285noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-85743344554294350772009-07-28T01:33:15.738-04:002009-07-28T01:33:15.738-04:00I've a certain problem with approach of mainst...I've a certain problem with approach of mainstream science to verification of some fundamental experiments. Where we can read for example about peer-reviewed verification of <br /><br />1)room temperature superconductivity experiments of J.F. Prins<br />2)cold fusion experiments of Arata or US Navy research<br />3)Podkletnov's antigravity experimentsZephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-50432648125828254902009-07-27T21:44:16.360-04:002009-07-27T21:44:16.360-04:00/*..it will be interesting to get a derivation fro.../*..it will be interesting to get a derivation from theory of this phenomenal phenomenological law..*/<br /><br />The finding of empirical formula is different task from simulation of it and the derivation of formal formula from first principles is the other thing. Currently we are able to simulate behavior of electrons, which are attracted and confined to hole stripes like into channels or pipesZephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-3269536945702855812009-07-27T19:27:06.006-04:002009-07-27T19:27:06.006-04:00Whoaaaaa! I took a glance at the paper where they ...Whoaaaaa! I took a glance at the paper where they propose the relationship, and it strikes me as surprisingly un-fishy. I mean, it's fishy, but not fishy enough! I don't pretend to understand the heuristics they use to define x and get the x dependence, but they look reasonable to me. And it's true that by playing with combinations of physical constants, you can get almost any Aaronhttps://www.blogger.com/profile/18281785407407667986noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1235507347440276602009-07-27T11:52:02.296-04:002009-07-27T11:52:02.296-04:00Tc = Kn^(2/3)/x^2
Making stuff doesn't happen...Tc = <b>K</b>n^(2/3)/x^2<br /><br />Making stuff doesn't happen with engineers or physicists. The former diddle things, the latter diddle theory. Stuff is chemistry. Hose down some lab chiggers, stick them in the hole, throw in raw meat, wait for results.<br /><br />Get the smallest unit cell with the smallest dopant. Somebody look at fluoride-doped lamellar transition metal borides, Uncle Alhttp://www.mazepath.com/uncleal/noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-30202397801854058172009-07-27T08:38:53.346-04:002009-07-27T08:38:53.346-04:00interesting... data-patterns were pretty much the ...interesting... data-patterns were pretty much the driving force behind planck's amazing results. Who knows this may lead to another fundamental understanding about materials!Anonymousnoreply@blogger.com