First- and Second-order Crossover of the Escape Rate for the Biaxial Spin Model with the Field Applied along the Hard Axis at Resonance

被引：0

作者：

Kang, Doo Hyung ^{[1
,2
]}

Shin, Mincheol ^{[2
]}

Kim, Gwang-Hee ^{[1
]}

机构：

[1] Sejong Univ, Dept Phys, Seoul 143747, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 59卷 / 01期

关键词：

Molecular magnets; Quantum tunneling of magnetization; QUANTUM-CLASSICAL TRANSITION; REGIMES; SYSTEM;

D O I：

10.3938/jkps.59.93

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied numerically the quantum-classical crossover of the escape rate in the biaxial spin system with an external field along the hard axis. Using the simple quantum transition state theory, we have obtained the crossover boundary separating the first- and the second-order crossovers and found that the first-order region is greatly suppressed in a moderate spin system, compared with the quasiclassical results. Applying an external longitudinal field, we have presented the peculiar crossover boundaries at resonant fields. The results can apply to a molecular nanomagnet.

引用

页码：93 / 97

页数：5

共 50 条

[31] Heart rate control using first- and second-order models during treadmill exercise
Wang, Hanjie
Hunt, Kenneth J.
SYSTEMS SCIENCE & CONTROL ENGINEERING, 2021, 9 (01) : 651 - 662
[32] Improved numerical model for the average transfer matrix of first- and second-order PMD
Heismann, Fred
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2007, 25 (02) : 621 - 631
[33] First- and second-order energy stable methods for the modified phase field crystal equation
Lee, Hyun Geun
Shin, Jaemin
Lee, June-Yub
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 2017, 321 : 1 - 17
[34] About one unified description of the first- and second-order phase transitions in the phase-field crystal model
Ankudinov, Vladimir
Starodumov, Ilya
Galenko, Peter K.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES, 2021, 44 (16) : 12129 - 12138
[35] Estimation of mixture properties from first- and second-order group contributions with the UNIFAC model
Kang, JW
Abildskov, J
Gani, R
Cobas, J
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2002, 41 (13) : 3260 - 3273
[36] A new simple model for land mobile satellite channels: First- and second-order statistics
Abdi, A
Lau, WC
Alouini, MS
Kaveh, M
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2003, 2 (03) : 519 - 528
[37] Identification of heart rate dynamics during treadmill exercise: comparison of first- and second-order models
Wang, Hanjie
Hunt, Kenneth J.
BIOMEDICAL ENGINEERING ONLINE, 2021, 20 (01)
[38] Identification of heart rate dynamics during treadmill exercise: comparison of first- and second-order models
Hanjie Wang
Kenneth J. Hunt
BioMedical Engineering OnLine, 20
[39] The influence of crystal electrical field on first- and second-order magnetic phase transition in Praseodymium intermetallics
von Ranke, PJ
de Oliveira, NA
Caldas, A
PHYSICA A, 1998, 256 (3-4): : 397 - 405
[40] Resonance enhancement of first- and second-order coherent phonons in metallic single-walled carbon nanotubes
Sato, K.
Tahara, K.
Minami, Y.
Katayama, I.
Kitajima, M.
Kawai, H.
Yanagi, K.
Takeda, J.
PHYSICAL REVIEW B, 2014, 90 (23)

← 1 2 3 4 5 →