Magnetic field enhancement of heat transport in the 2D Heisenberg antiferromagnet K2V3O8 -: art. no. 095901

被引：47

作者：

Sales, BC ^{[1
]}

Lumsden, MD ^{[1
]}

Nagler, SE ^{[1
]}

Mandrus, D ^{[1
]}

Jin, R ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.88.095901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The thermal conductivity and heat capacity of single crystals of the spin 1/2 quasi-2D Heisenberg antiferromagnet K2V3O8 have been measured from 1.9 to 300 K in magnetic fields from 0 to 8 T. The zero field thermal conductivity data are consistent with resonant scattering of phonons by magnons near the zone boundary. Application of a magnetic field greater than 1 T, however, produces a new magnetic ground state with substantial heat transport by long wavelength magnons.

引用

收藏

页数：4

相关论文

共 21 条

[1] MODEL FOR LATTICE THERMAL CONDUCTIVITY AT LOW TEMPERATURES [J].

CALLAWAY, J .

PHYSICAL REVIEW, 1959, 113 (04) :1046-1051

[2] Local symmetry breaking in K2V3O8 as studied by infrared spectroscopy -: art. no. 054101 [J].

Choi, J ;

Zhu, ZT ;

Musfeldt, JL ;

Ragghianti, G ;

Mandrus, D ;

Sales, BC ;

Thompson, JR .

PHYSICAL REVIEW B, 2002, 65 (05) :1-6

[3] Glasslike heat conduction in high-mobility crystalline semiconductors [J].

Cohn, JL ;

Nolas, GS ;

Fessatidis, V ;

Metcalf, TH ;

Slack, GA .

PHYSICAL REVIEW LETTERS, 1999, 82 (04) :779-782

[4] ANOMALOUS PHONON DAMPING AND THERMAL-CONDUCTIVITY IN INSULATING CUPRATES [J].

COHN, JL ;

LOWEMA, CK ;

VANDERAH, TA .

PHYSICAL REVIEW B, 1995, 52 (18) :13134-13137

[5]

DALGOTTO E, 1996, SCIENCE, V271, P618

[6] CRYSTAL-STRUCTURE OF K2V3O8 OR K2(VO)[V2O7] [J].

GALY, J ;

CARPY, A .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1975, 31 (JUN15) :1794-1795

[7] SPINON GAS DESCRIPTION OF THE S=1/2 HEISENBERG CHAIN WITH INVERSE-SQUARE EXCHANGE - EXACT SPECTRUM AND THERMODYNAMICS [J].

HALDANE, FDM .

PHYSICAL REVIEW LETTERS, 1991, 66 (11) :1529-1532

[8] Strong damping of phononic heat current by magnetic excitations in SrCu2(BO3)2 -: art. no. 047202 [J].

Hofmann, M ;

Lorenz, T ;

Uhrig, GS ;

Kierspel, H ;

Zabara, O ;

Freimuth, A ;

Kageyama, H ;

Ueda, Y .

PHYSICAL REVIEW LETTERS, 2001, 87 (04) :47202-1

[9]

KLEMENS PG, 1958, SOLID STATE PHYSICS, V7

[10] MAGNETIC-PROPERTIES OF FRESNOITE-TYPE VANADIUM-OXIDES - A(2)V(3)O(8) (A=K, RB, NH4) [J].

LIU, G ;

GREEDAN, JE .

JOURNAL OF SOLID STATE CHEMISTRY, 1995, 114 (02) :499-505