Field-induced incommensurate phase in the strong-rung spin ladder with ferromagnetic legs
Field-induced incommensurate phase in the strong-rung spin ladder with ferromagnetic legs
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DOI：
10.1103/physrevb.89.220402
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发表时间：
2014-06
影响因子：
3.7
通讯作者：
H. Yamaguchi;H. Miyagai;M. Yoshida;M. Takigawa;K. Iwase;T. Ono;N. Kase;K. Araki;S. Kittaka;T. Sakakibara;T. Shimokawa;T. Okubo;K. Okunishi;A. Matsuo;Y. Hosokoshi
中科院分区：
文献类型：
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作者：
H. Yamaguchi;H. Miyagai;M. Yoshida;M. Takigawa;K. Iwase;T. Ono;N. Kase;K. Araki;S. Kittaka;T. Sakakibara;T. Shimokawa;T. Okubo;K. Okunishi;A. Matsuo;Y. Hosokoshi
我们报道了3-Br-4-F-V [=3-（3-溴-4-氟苯基）-1，5-二苯基Verdazyl]的磁化强度、比热和NMR测量结果。我们解释的磁性和热力学性质的基础上强的横档制度。此外，我们还发现了场诱导的连续相变的比热和核自旋晶格弛豫率1/T1。19 F-NMR光谱的较高和较低的温度相表示部分磁序和不相称的长程有序，分别证明存在挫折，由于弱梯间耦合。
We report magnetization, specific heat, and NMR measurements of 3-Br-4-F-V [=3-(3-bromo-4-fluorophenyl)-1,5-diphenylverdazyl], a strong-rung S=1/2 Heisenberg spin ladder with ferromagnetic leg interactions. We explain the magnetic and thermodynamic properties based on the strong-rung regime. Furthermore, we find a field-induced successive phase transition in the specific heat and the nuclear spin-lattice relaxation rate 1/T1. 19F-NMR spectra for higher- and lower-temperature phases indicate partial magnetic order and incommensurate long-range order, respectively, evidencing the presence of frustration due to weak interladder couplings.