Heavy fermion behavior in PrRh2B2C: Excitonic mass enhancement

被引：16

作者：

Anand, V. K. ^{[1
]}

Hossain, Z. ^{[1
]}

Chen, G. ^{[2
]}

Nicklas, M. ^{[2
]}

Geibel, C. ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

[2] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 11期

关键词：

boron compounds; crystal field interactions; crystal structure; electrical resistivity; excitons; ground states; heavy fermion superconductors; magnetisation; praseodymium compounds; rhodium compounds; space groups; specific heat;

D O I：

10.1103/PhysRevB.79.113107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report magnetic and transport properties of a quaternary borocarbide PrRh2B2C based on magnetization, resistivity, and specific-heat studies. This compound forms in LuNi2B2C-type tetragonal structure (space group I4/mmm) and does not exhibit magnetic ordering or superconductivity down to 0.5 K. The crystal-field analysis of specific-heat data suggests a singlet ground state in this compound. The high value of the Sommerfeld coefficient, gamma approximate to 250 mJ/mole K-2, together with a singlet ground state suggests that the heavy fermion behavior in PrRh2B2C results from the interaction of the conduction electrons with the low-lying crystal-field excitations. No signature of magnetic ordering or superconductivity is observed in PrRh2B2C under the application of pressure up to 23 kbar.

引用

页数：4

共 16 条

[1] Magnetic and transport properties of PrTGe3 (T = Ni, Rh) [J].

Anand, V. K. ;

Hossain, Z. ;

Geibelb, C. .

SOLID STATE COMMUNICATIONS, 2008, 146 (7-8) :335-339

[2] Magnetic behavior of PrPd2B2C [J].

Anand, V. K. ;

Chaudhuri, A. ;

Dhar, S. K. ;

Geibel, C. ;

Hossain, Z. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 (785-786) :785-786

[3] Magnetic order in Pr2Pd3Ge5 and possible heavy-fermion behavior in Pr2Rh3Ge5 [J].

Anand, V. K. ;

Hossain, Z. ;

Geibel, C. .

PHYSICAL REVIEW B, 2008, 77 (18)

[4] Time-reversal symmetry-breaking superconductivity in heavy-fermion PrOs4Sb12 detected by muon-spin relaxation -: art. no. 067003 [J].

Aoki, Y ;

Tsuchiya, A ;

Kanayama, T ;

Saha, SR ;

Sugawara, H ;

Sato, H ;

Higemoto, W ;

Koda, A ;

Ohishi, K ;

Nishiyama, K ;

Kadono, R .

PHYSICAL REVIEW LETTERS, 2003, 91 (06)

[5] Superconductivity and heavy fermion behavior in PrOs4Sb12 -: art. no. 100506 [J].

Bauer, ED ;

Frederick, NA ;

Ho, PC ;

Zapf, VS ;

Maple, MB .

PHYSICAL REVIEW B, 2002, 65 (10) :1-4

[6] ELEMENTARY PHYSICAL-PROPERTIES AND CRYSTAL-STRUCTURES OF LARH2B2C AND LAIR2B2C [J].

CAVA, RJ ;

SIEGRIST, T ;

BATLOGG, B ;

TAKAGI, H ;

EISAKI, H ;

CARTER, SA ;

KRAJEWSKI, JJ ;

PECK, WF .

PHYSICAL REVIEW B, 1994, 50 (17) :12966-12968

[7] Probing the superconducting gap symmetry of PrOs4Sb12:: A penetration depth study -: art. no. 247003 [J].

Chia, EEM ;

Salamon, MB ;

Sugawara, H ;

Sato, H .

PHYSICAL REVIEW LETTERS, 2003, 91 (24)

[8] ELECTRONIC HEAT-CAPACITY OF THE RARE-EARTH-METALS [J].

FULDE, P ;

JENSEN, J .

PHYSICAL REVIEW B, 1983, 27 (07) :4085-4094

[9] Crystal field potential of PrOs4Sb12:: Consequences for superconductivity -: art. no. 157003 [J].

Goremychkin, EA ;

Osborn, R ;

Bauer, ED ;

Maple, MB ;

Frederick, NA ;

Yuhasz, WM ;

Woodward, FM ;

Lynn, JW .

PHYSICAL REVIEW LETTERS, 2004, 93 (15) :157003-1

[10] Multiple superconducting phases in new heavy fermion superconductor PrOs4Sb12 -: art. no. 117001 [J].

Izawa, K ;

Nakajima, Y ;

Goryo, J ;

Matsuda, Y ;

Osaki, S ;

Sugawara, H ;

Sato, H ;

Thalmeier, P ;

Maki, K .

PHYSICAL REVIEW LETTERS, 2003, 90 (11) :4

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