Hole carrier in MgB2 characterized by Hall measurements

被引：106

作者：

Kang, WN ^{[1
]}

Jung, CU

Kim, KHP

Park, MS

Lee, SY

Kim, HJ

Choi, EM

Kim, KH

Kim, MS

Lee, SI

机构：

[1] Pohang Univ Sci & Technol, Natl Creat Res Initiat Ctr Superconduct, Pohang 790784, South Korea

[2] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 07期

关键词：

D O I：

10.1063/1.1392979

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The longitudinal resistivity (rho (xx)) and Hall coefficient (R-H) were measured for MgB2 sintered under high pressure. We found that R-H is positive like cuprate high-T-c superconductors, and decreases as the temperature increases for 40 K <T < 300 K. The cotangent of the Hall angle was found to follow a+bT(2) behavior from T-c to 300 K. At T=100 K, R-H=4.1x10(-11) m(3)/C from which the hole carrier density was determined to be 1.5x10(23)/cm(3). This carrier density is 1-2 orders of magnitude larger than those of Nb3Sn and optimally doped YBa2Cu3Oy superconductors. (C) 2001 American Institute of Physics.

引用

页码：982 / 984

页数：3

共 17 条

[1] Hall effect in Zn-doped YBa2Cu3O7-δ revisited:: Hall angle and the pseudogap [J].

Abe, Y ;

Segawa, K ;

Ando, Y .

PHYSICAL REVIEW B, 1999, 60 (22) :R15055-R15058

[2]

AKIMITSU J, 2001, UNP P S TRANS MET OX

[3] HALL-EFFECT IN THE 2-DIMENSIONAL LUTTINGER LIQUID [J].

ANDERSON, PW .

PHYSICAL REVIEW LETTERS, 1991, 67 (15) :2092-2094

[4] Boron isotope effect in superconducting MgB2 [J].

Bud'ko, SL ;

Lapertot, G ;

Petrovic, C ;

Cunningham, CE ;

Anderson, N ;

Canfield, PC .

PHYSICAL REVIEW LETTERS, 2001, 86 (09) :1877-1880

[5] Thermodynamic and transport properties of superconducting Mg10B2 [J].

Finnemore, DK ;

Ostenson, JE ;

Bud'ko, SL ;

Lapertot, G ;

Canfield, PC .

PHYSICAL REVIEW LETTERS, 2001, 86 (11) :2420-2422

[6] Normal-state transport and magnetic properties of RNi(2)B(2)C (R=Y,Ho,La) [J].

Fisher, IR ;

Cooper, JR ;

Cava, RJ .

PHYSICAL REVIEW B, 1995, 52 (21) :15086-15089

[7] EXPERIMENTAL TEST OF THE T2 LAW FOR THE HALL ANGLE FROM TC TO 500-K IN OXYGEN-REDUCED YBA2CU3O6+X CRYSTALS [J].

HARRIS, JM ;

YAN, YF ;

ONG, NP .

PHYSICAL REVIEW B, 1992, 46 (21) :14293-14296

[8]

HIRSCH JE, 2001, CONDMAT0102115

[9] ELECTRON REQUIREMENTS OF BONDS IN METAL BORIDES [J].

JOHNSON, RW ;

DAANE, AH .

JOURNAL OF CHEMICAL PHYSICS, 1963, 38 (02) :425-&

[10] Temperature- and magnetic-field-dependent resistivity of MgB2 sintered at high-temperature and high-pressure condition [J].

Jung, CU ;

Park, MS ;

Kang, WN ;

Kim, MS ;

Lee, SY ;

Lee, SI .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2001, 353 (3-4) :162-166

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