武汉工业学院学报
武漢工業學院學報
무한공업학원학보
JOURNAL OF WUHAN POLYTECHNIC UNIVERSITY
2013年
4期
52-55
,共4页
三聚链%磁化平台%能隙
三聚鏈%磁化平檯%能隙
삼취련%자화평태%능극
Trimerized chain%Magnetization plateau%Energy gap
采用Jordan-Wigner变换,讨论自旋-1/2铁磁-反铁磁-反铁磁三聚海森堡链系统在外磁场作用下的磁化过程,数值计算了零温下系统的磁化强度随反铁磁相互作用和外磁场的变化关系,结果发现有1/3磁化平台出现,且遵循OYA理论。此外,分析了系统的能隙及磁化平台产生的原因。
採用Jordan-Wigner變換,討論自鏇-1/2鐵磁-反鐵磁-反鐵磁三聚海森堡鏈繫統在外磁場作用下的磁化過程,數值計算瞭零溫下繫統的磁化彊度隨反鐵磁相互作用和外磁場的變化關繫,結果髮現有1/3磁化平檯齣現,且遵循OYA理論。此外,分析瞭繫統的能隙及磁化平檯產生的原因。
채용Jordan-Wigner변환,토론자선-1/2철자-반철자-반철자삼취해삼보련계통재외자장작용하적자화과정,수치계산료령온하계통적자화강도수반철자상호작용화외자장적변화관계,결과발현유1/3자화평태출현,차준순OYA이론。차외,분석료계통적능극급자화평태산생적원인。
The magnetization process of ferromagnetic-antiferromagnetic-antiferromagnetic trimerized quantum chain , under an external magetic field , have been investigated through Jordan-Wigner transformation .At zero temperature , the magnetization as a function of antiferromagnetic interaction and external magnetic field was calculated numeri -cally.It is found that a 1/3 magnetization plateau of the system is observed , which is consistent with OYA condi-tion.Furthermore , an energy gap , responsible for the 1/3 magnetization plateau , was discussed .