Anisotropic thermopower of the organic superconductor κ-(BEDT-TTF) 2Cu[N(CN)2]Br

R. C. Yu; J. M. Williams; H. H. Wang; J. E. Thompson; A. M. Kini; K. D. Carlson; J. Ren; M. H. Whangbo; P. M. Chaikin

doi:10.1103/PhysRevB.44.6932

Anisotropic thermopower of the organic superconductor κ-(BEDT-TTF) 2Cu[N(CN)2]Br

R. C. Yu, J. M. Williams, H. H. Wang, J. E. Thompson, A. M. Kini, K. D. Carlson, J. Ren, M. H. Whangbo, P. M. Chaikin

Research output: Contribution to journal › Article › peer-review

Abstract

The thermopower of the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2] Br single crystals has been measured in two crystallographic directions a and c within the most conducting organic donor molecule plane. [Here BEDT-TTF represents bis(ethylenethio)-tetrathiafulvalene.] While the thermopower in the a direction is positive, the thermopower in the c direction is negative. The drastic anisotropy in thermopower reveals that the carriers in the a direction are holelike, whereas the carriers in the c direction are electronlike. A calculation based on the tight-binding electronic band structure is able to describe the temperature dependence of the anisotropic thermopower, but with a much reduced band dispersion.

Original language	English (US)
Pages (from-to)	6932-6936
Number of pages	5
Journal	Physical Review B
Volume	44
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.44.6932
State	Published - 1991

ASJC Scopus subject areas

Condensed Matter Physics

Access to Document

10.1103/PhysRevB.44.6932

Cite this

@article{8bec56d4cff34e5fba0aed40d97f8fce,

title = "Anisotropic thermopower of the organic superconductor κ-(BEDT-TTF) 2Cu[N(CN)2]Br",

abstract = "The thermopower of the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2] Br single crystals has been measured in two crystallographic directions a and c within the most conducting organic donor molecule plane. [Here BEDT-TTF represents bis(ethylenethio)-tetrathiafulvalene.] While the thermopower in the a direction is positive, the thermopower in the c direction is negative. The drastic anisotropy in thermopower reveals that the carriers in the a direction are holelike, whereas the carriers in the c direction are electronlike. A calculation based on the tight-binding electronic band structure is able to describe the temperature dependence of the anisotropic thermopower, but with a much reduced band dispersion.",

author = "Yu, {R. C.} and Williams, {J. M.} and Wang, {H. H.} and Thompson, {J. E.} and Kini, {A. M.} and Carlson, {K. D.} and J. Ren and Whangbo, {M. H.} and Chaikin, {P. M.}",

year = "1991",

doi = "10.1103/PhysRevB.44.6932",

language = "English (US)",

volume = "44",

pages = "6932--6936",

journal = "Physical Review B",

issn = "0163-1829",

publisher = "American Physical Society",

number = "13",

}

TY - JOUR

T1 - Anisotropic thermopower of the organic superconductor κ-(BEDT-TTF) 2Cu[N(CN)2]Br

AU - Yu, R. C.

AU - Williams, J. M.

AU - Wang, H. H.

AU - Thompson, J. E.

AU - Kini, A. M.

AU - Carlson, K. D.

AU - Ren, J.

AU - Whangbo, M. H.

AU - Chaikin, P. M.

PY - 1991

Y1 - 1991

N2 - The thermopower of the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2] Br single crystals has been measured in two crystallographic directions a and c within the most conducting organic donor molecule plane. [Here BEDT-TTF represents bis(ethylenethio)-tetrathiafulvalene.] While the thermopower in the a direction is positive, the thermopower in the c direction is negative. The drastic anisotropy in thermopower reveals that the carriers in the a direction are holelike, whereas the carriers in the c direction are electronlike. A calculation based on the tight-binding electronic band structure is able to describe the temperature dependence of the anisotropic thermopower, but with a much reduced band dispersion.

AB - The thermopower of the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2] Br single crystals has been measured in two crystallographic directions a and c within the most conducting organic donor molecule plane. [Here BEDT-TTF represents bis(ethylenethio)-tetrathiafulvalene.] While the thermopower in the a direction is positive, the thermopower in the c direction is negative. The drastic anisotropy in thermopower reveals that the carriers in the a direction are holelike, whereas the carriers in the c direction are electronlike. A calculation based on the tight-binding electronic band structure is able to describe the temperature dependence of the anisotropic thermopower, but with a much reduced band dispersion.

UR - http://www.scopus.com/inward/record.url?scp=0000613717&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000613717&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.44.6932

DO - 10.1103/PhysRevB.44.6932

M3 - Article

AN - SCOPUS:0000613717

SN - 0163-1829

VL - 44

SP - 6932

EP - 6936

JO - Physical Review B

JF - Physical Review B

IS - 13

ER -

Anisotropic thermopower of the organic superconductor κ-(BEDT-TTF) 2Cu[N(CN)2]Br

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this