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Paper Information

Journal:   IRANIAN JOURNAL OF PHYSICS RESEARCH   WINTER 2018 , Volume 17 , Number 5 ; Page(s) 743 To 751.
 
Paper: 

ANALYZING SPIN TUNNELING CONSIDERING QUADRUPOLE EXCITATIONS IN SINGLE MOLECULE MAGNET

 
 
Author(s):  YOUSEFI Y.*, FAKHARI H., MUMINOV K., BENAM M.R.
 
* DEPARTMENT OF PHYSICS, PAYAME NOOR UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

Spin tunneling effect in Single Molecule Magnet (SMM) Fe8 is studied by instanton calculation technique. The SU (3) generalized spin coherent state in real parameter has been used as a trial function. For this SMM, splitting of energy levels arises due to the presence of a Berry like phase in action, which causes interference between tunneling trajectories (instantons). For this SMM, it is established that the use of quadrupole excitation (g dependence) changes not only the location of the quenching points, but also the number of these points. Also, these quenching points are related with hysteresis loops of this SMM. If dipole and quadrupole excitations are considered in classical energy, the number of these hysteresis loops equals to that obtained from experimental data.

 
Keyword(s): COHERENT STATE, SPIN TUNNELING, INSTANTON, QUADRUPOLE EXCITATION
 
 
References: 
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Citations: 
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APA: Copy

YOUSEFI, Y., & FAKHARI, H., & MUMINOV, K., & BENAM, M. (2018). ANALYZING SPIN TUNNELING CONSIDERING QUADRUPOLE EXCITATIONS IN SINGLE MOLECULE MAGNET. IRANIAN JOURNAL OF PHYSICS RESEARCH, 17(5 ), 743-751. https://www.sid.ir/en/journal/ViewPaper.aspx?id=573295



Vancouver: Copy

YOUSEFI Y., FAKHARI H., MUMINOV K., BENAM M.R.. ANALYZING SPIN TUNNELING CONSIDERING QUADRUPOLE EXCITATIONS IN SINGLE MOLECULE MAGNET. IRANIAN JOURNAL OF PHYSICS RESEARCH. 2018 [cited 2021July26];17(5 ):743-751. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573295



IEEE: Copy

YOUSEFI, Y., FAKHARI, H., MUMINOV, K., BENAM, M., 2018. ANALYZING SPIN TUNNELING CONSIDERING QUADRUPOLE EXCITATIONS IN SINGLE MOLECULE MAGNET. IRANIAN JOURNAL OF PHYSICS RESEARCH, [online] 17(5 ), pp.743-751. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573295.



 
 
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