Thermopower and Hall conductivity in the magnetic-field-driven normal state of Pr2-xCexCuO4-δ superconductors -: art. no. 100517

被引：16

作者：

Budhani, RC ^{[1
]}

Sullivan, MC ^{[1
]}

Lobb, CJ ^{[1
]}

Greene, RL ^{[1
]}

机构：

[1] Univ Maryland, Ctr Superconduct Res, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.65.100517

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of thermoelectric power (TEP) and Hall coefficient (R-H) are carried out on Pr2-xCexCuO4-delta epitaxial films to probe the mechanism of charge transport in the absence of superconductivity. In the under-doped (x=0.13) and optimally doped (x=0.15) samples, the TEP shows a ln(1/T) dependence and the R-H remains constant in the temperature range accessed by suppressing superconductivity. These observations and the behavior of the in-plane resistivity indicate weak localization of charge carriers on the CuO2 planes. The TEP and R-H of the overdoped sample mimic metallic transport. This, combined with the evidence for hole and electron charge carriers, which may exist on different planes of the unit cell, suggests that the metallic transport in the overdoped samples is a consequence of a three-dimensional charge distribution.

引用

页码：1 / 4

页数：4

共 37 条

[1] SCALING THEORY OF LOCALIZATION - ABSENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS [J].

ABRAHAMS, E ;

ANDERSON, PW ;

LICCIARDELLO, DC ;

RAMAKRISHNAN, TV .

PHYSICAL REVIEW LETTERS, 1979, 42 (10) :673-676

[2] QUANTUM-INTERFERENCE CONTRIBUTION TO THE THERMOELECTRIC COEFFICIENT OF DEGENERATE AND NONDEGENERATE ELECTRON GASES [J].

AFONIN, VV ;

GALPERIN, YM ;

GUREVICH, VL .

PHYSICAL REVIEW B, 1986, 33 (12) :8841-8843

[3] Coherent ab and c transport theory of high-T-c cuprates [J].

Alexandrov, AS ;

Kabanov, VV ;

Mott, NF .

PHYSICAL REVIEW LETTERS, 1996, 77 (23) :4796-4799

[4]

Altshuler B. L., 1985, Electron-electron interactions in disordered systems, P1

[5] Coherence and localization in 2D Luttinger liquids [J].

Anderson, PW ;

Ramakrishnan, TV ;

Strong, S ;

Clarke, DG .

PHYSICAL REVIEW LETTERS, 1996, 77 (20) :4241-4244

[6] Normal-state Hall effect and the insulating resistivity of high-T-c cuprates at low temperatures [J].

Ando, Y ;

Boebinger, GS ;

Passner, A ;

Wang, NL ;

Geibel, C ;

Steglich, F ;

Trofimov, IE ;

Balakirev, FF .

PHYSICAL REVIEW B, 1997, 56 (14) :R8530-R8533

[7] Mobility of the doped holes and the antiferromagnetic correlations in underdoped high-Tc cuprates -: art. no. 017001 [J].

Ando, Y ;

Lavrov, AN ;

Komiya, S ;

Segawa, K ;

Sun, XF .

PHYSICAL REVIEW LETTERS, 2001, 87 (01) :1-017001

[8] LOGARITHMIC DIVERGENCE OF BOTH INPLANE AND OUT-OF-PLANE NORMAL-STATE RESISTIVITIES OF SUPERCONDUCTING LA2-XSRXCUO4 IN THE ZERO-TEMPERATURE LIMIT [J].

ANDO, Y ;

BOEBINGER, GS ;

PASSNER, A ;

KIMURA, T ;

KISHIO, K .

PHYSICAL REVIEW LETTERS, 1995, 75 (25) :4662-4665

[9] Gapped tunneling spectra in the normal state of Pr2-xCexCuO4 -: art. no. 104519 [J].

Biswas, A ;

Fournier, P ;

Smolyaninova, VN ;

Budhani, RC ;

Higgins, JS ;

Greene, RL .

PHYSICAL REVIEW B, 2001, 64 (10)

[10]

Blatt FJ, 1976, THERMOELECTRIC POWER, DOI 10.1007/978-1-4613-4268-7

← 1 2 3 4 →