Heavy fermions in LiV2O4: Kondo compensation versus geometric frustration
Heavy fermions in LiV2O4: Kondo compensation versus geometric frustration
复制标题
LiV2O4 中的重费米子:近藤补偿与几何挫败
DOI:
10.1088/0953-8984/13/37/307
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
S. Horn
中科院分区:
文献类型:
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作者:
H. Kaps;M. Brando;W. Trinkl;N. Büttgen;A. Loidl;Ernst;M. Klemm;S. Horn
7Li nuclear magnetic resonance and heat capacity measurements were performed on the metallic spinel LiV2O4 down to 30 mK. The temperature dependencies of the linewidth, the Knight shift and the spin-lattice relaxation rate were investigated in the temperature range 30 mK≤T≤280 K and at applied magnetic fields of 4.6, 10, 44 and 83 kOe. The longitudinal nuclear magnetization was found to relax following a stretched-exponential form with a stretching exponent in the range 0.5<β<1. For temperatures T<1 K and at the lowest applied magnetic field of 4.6 kOe, we observe a spin-lattice relaxation rate which slows down exponentially, exhibiting a hindering barrier of the order of 1 K. This excitation energy separates different configurations of a highly degenerate ground state of a completely frustrated magnet.
DOI:
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发表时间:
2022
期刊:
影响因子:
--
作者:
南翔太;加藤正樹;池田俊一郎;吉村匡史;上田紗津貴;越川陽介;嶽北佳輝;木下利彦;西田圭一郎
通讯作者:
西田圭一郎