NMR relaxation rates in a spin-1/2 antiferromagnetic chain

被引：33

作者：

Barzykin, V ^{[1
]}

机构：

[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.63.140412

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider the low-temperature behavior of NMR relaxation rates T-1 and T-2G in the spin-1/2 antiferromagnetic chain. We find that T(1)(proportional to)const and T(2G)(proportional to)rootT. With logarithmic corrections. We determine both constants and logarithmic terms by matching perturbative renormalization-group with exact results, so that the final expressions for the relaxation rates do not contain any free parameters. Our theoretical results are in excellent agreement with NMR experiments in Sr2CuO3.

引用

页数：3

共 24 条

[1] CRITICAL-BEHAVIOR OF SPIN-S HEISENBERG ANTIFERROMAGNETIC CHAINS - ANALYTIC AND NUMERICAL RESULTS [J].

AFFLECK, I ;

GEPNER, D ;

SCHULZ, HJ ;

ZIMAN, T .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1989, 22 (05) :511-529

[2] Exact correlation amplitude for the S=1/2 Heisenberg antiferromagnetic chain [J].

Affleck, I .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1998, 31 (20) :4573-4581

[3] RENORMALIZATION GROUP-ANALYSIS OF THE PHASE-TRANSITION IN THE 2D COULOMB GAS, SINE-GORDON THEORY AND XY-MODEL [J].

AMIT, DJ ;

GOLDSCHMIDT, YY ;

GRINSTEIN, G .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1980, 13 (02) :585-620

[4] EXACT SOLUTION OF THE ISOTROPIC HEISENBERG CHAIN WITH ARBITRARY SPINS - THERMODYNAMICS OF THE MODEL [J].

BABUJIAN, HM .

NUCLEAR PHYSICS B, 1983, 215 (03) :317-336

[5] Screening cloud in the k-channel Kondo model: Perturbative and large-k results [J].

Barzykin, V ;

Affleck, I .

PHYSICAL REVIEW B, 1998, 57 (01) :432-448

[6] Finite-size scaling for the spin-1/2 Heisenberg antiferromagnetic chain [J].

Barzykin, V ;

Affleck, I .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1999, 32 (06) :867-874

[7] Temperature-dependent logarithmic corrections in the spin-1/2 Heisenberg chain [J].

Barzykin, V .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (09) :2053-2059

[8] MAGNETIC SCALING IN CUPRATE SUPERCONDUCTORS [J].

BARZYKIN, V ;

PINES, D .

PHYSICAL REVIEW B, 1995, 52 (18) :13585-13600

[9] HIGH-TEMPERATURE SPIN DYNAMICS IN ONE-DIMENSIONAL HEISENBERG SYSTEM (CH-3)4NMNCL-3 (TMMC) - SPIN DIFFUSION, INTRACHAIN AND INTERCHAIN CUTOFF EFFECTS [J].

BOUCHER, JP ;

BAKHEIT, MA ;

NECHTSCHEIN, M ;

VILLA, M ;

BONERA, G ;

BORSA, F .

PHYSICAL REVIEW B, 1976, 13 (09) :4098-4118

[10] SUSCEPTIBILITY OF THE SPIN 1/2 HEISENBERG ANTIFERROMAGNETIC CHAIN [J].

EGGERT, S ;

AFFLECK, I ;

TAKAHASHI, M .

PHYSICAL REVIEW LETTERS, 1994, 73 (02) :332-335

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