TY - JOUR
T1 - Measurement of the Nernst effect in the normal state of Tl2Ba2CaCu2O8+δ
AU - Clayhold, J. A.
AU - Linnen, A. W.
AU - Chen, F.
AU - Chu, C. W.
N1 - Funding Information:
wherem ~st hee ffectivem assa nd~ ti s thec hemical potentia\l[ 6\]E q. (1) indicatetsh att hen egativesi gn of Q(T) in the normal state of our Tl2Ba2CaCu208+sa5m pleis froma scatterinrga te for hole-likec arriersw hich increasesw ith hole energy. A morec ompleteth eroeticatrl eatmenist necessaryfo r detailedu nderstandinogf the interesting temperaturdee pendencoef Q. In particular,i t would be appropriatet o reformulateE q. (1) in a manner which takes into accountt he existenceo f separate relaxationt imes for cyclotrona nd longitudinal currentsin the cupratesa s seen in recentH all measuremen\[t1s ,2\]W. e hopet hato urmeasureJnent will stimulatteh eoreticaelf forti n thisd irectionW. e anticipateth atf urtherN emstm easuremenints t he cupratews ill helpc larifyt hei nterestintge mperature dependenocfe Q . In summaryw, e haves uccessfullmy easuretdh e normal-staNtee mstc oefficientQ, , for thef irstt ime in one of the cuprate superconductors, TI2Ba2CaCu208+f6o,r temperaturreasn gingfr om Tc to abover oomt emperatureT.h e signali s small, approximately-2 nV/K-T, and negativein sign, indicatinga positivee nergy-derivatiovfe t hehole scatterinrga te. The temperatudree pendencoef Q is puzzlinga ndr equirefsu rthesrt udy. We wish to thankC . S. Ting, Z. Y. Weng,G . Levine,D . M. Frenkel,a ndY. Y. Xue for useful discussions.T his work is supportedin part by USAFOSR F49620-93-1-031N0,S F Grant No. DMR 91-22043A, RPA GrantM DA 972-90-J-1001, the Texas Center for Superconductivitayt the Universityo f Houston,a nd the T.L.L. Temple Foundation.
PY - 1994/12
Y1 - 1994/12
N2 - We have successfully measured the Nernst effect for the first time in the normal state of a cuprate superconductor, Tl2Ba2CaCu2O8+δ, ver the temperature range from Tc to above room temperature. The signal is small: the Nersnt coefficient, Q, is never larger than 3 nV/K-T over the entire temperature range. The negative sign of Q suggests that the hole scattering rate, 1/τ, in Tl2Ba2CaCu2O8+δ is an increasing function of energy.
AB - We have successfully measured the Nernst effect for the first time in the normal state of a cuprate superconductor, Tl2Ba2CaCu2O8+δ, ver the temperature range from Tc to above room temperature. The signal is small: the Nersnt coefficient, Q, is never larger than 3 nV/K-T over the entire temperature range. The negative sign of Q suggests that the hole scattering rate, 1/τ, in Tl2Ba2CaCu2O8+δ is an increasing function of energy.
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U2 - 10.1016/0921-4534(94)91993-3
DO - 10.1016/0921-4534(94)91993-3
M3 - Article
AN - SCOPUS:43949158290
SN - 0921-4534
VL - 235-240
SP - 1537
EP - 1538
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - PART 2
ER -