作者机构:
[Chen, Depeng; Leng, Xiaoling; Wen, Bing; Deng, Yangbao] Hunan City Univ, Coll Informat & Elect Engn, All Solid State Energy Storage Mat & Devices Key, Yiyang 413000, Peoples R China.;[Wen, Bing; Wei, Jiamou] Hunan Univ, Sch Phys & Elect, Key Lab Micro Nanooptoelect Devices, Minist Educ, Changsha 410082, Peoples R China.
通讯机构:
[Yangbao Deng; Bing Wen] A;Authors to whom correspondence should be addressed.<&wdkj&>All-Solid-State Energy Storage Materials and Devices Key Laboratory of Hunan Province, College of Information and Electronic Engineering, Hunan City University, Yiyang 413000, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>All-Solid-State Energy Storage Materials and Devices Key Laboratory of Hunan Province, College of Information and Electronic Engineering, Hunan City University, Yiyang 413000, China<&wdkj&>Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
摘要:
The evolution of Cos−Gaussian beams in periodic potential optical lattices is theoretically and numerically investigated. By theoretical analysis, a breathing soliton solution of the Gross–Pitaevskii equation with periodic potential is obtained, and the period of the breathing soliton is solved. In addition, the evolution of Cos−Gaussian beams in periodic potential optical lattices is numerically simulated. It is found that breathing solitons generate by appropriately choosing initial medium and beam parameters. Firstly, the effects of the initial parameters of Cos−Gaussian beams (initial phase and width) on its initial waveform and the propagation characteristics of breathing soliton are discussed in detail. Then, the influence of the initial parameters (modulation intensity and modulation frequency) of a photonic lattice on the propagation characteristics of breathing solitons is investigated. Finally, the effects of modulation intensity and modulation frequency on the width and period of the breathing soliton are analyzed. The results show that the number of breathing solitons is manipulated by controlling the initial parameters of Cos−Gaussian beams. The period and width of a breathing soliton are controlled by manipulating the initial parameters of a periodic photonic lattice. The results provide some theoretical basis for the generation and manipulation of breathing solitons.
作者机构:
[张光富; 谭伟石; 张赛文; 文兵] School of Information and Electronic Engineering, Hunan City University, Yiyang;413000, China;All-Solid-State Energy Storage Materials and Devices Key Laboratory of Hunan Province, Yiyang;[张光富; 谭伟石; 张赛文] 413000, China<&wdkj&>All-Solid-State Energy Storage Materials and Devices Key Laboratory of Hunan Province, Yiyang;[张光富; 谭伟石; 张赛文; 文兵] 413000, China
作者机构:
[文兵; 邓杨保; 张赛文; 陈德鹏; 邓曙光; 张光富] All-solid-state Energy Storage Materials and Devices Key Laboratory of Hunan Province, College of Information and Electronic Engineering, Hunan City University, Yiyang;413000, China;[韦家谋] Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha;410082, China;[文兵] 413000, China<&wdkj&>Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha
通讯机构:
[Deng, Y.] A;All-solid-state Energy Storage Materials and Devices Key Laboratory of Hunan Province, China
作者机构:
[张林成] Hunan City University, College of Information and Electronic Engineering, Hunan, Yiyang, 413000, China;[原源; 周聪; 李广场] Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education, Jiangxi, Nanchang, 330013, China;[汤井田; 蒋奇云] Key Laboratory ofMetallogenic Prediction of Nonferrous Metals, Ministry of Education, Central South University, Hunan, Changsha, 410083, China;[黄凤林; 李广场] Zhejiang Huadong Engineering Safety Technology Co., LTD, Zhejiang, Hangzhou, 311122, China
期刊:
Journal of Applied Physics,2022年132(18):183907 ISSN:0021-8979
通讯作者:
Haiou Wang
作者机构:
[Wang, Haiou; Huo, Dexuan; Wang, Yan] Hangzhou Dianzi Univ, Inst Mat Phys, Key Lab Novel Mat Sensor Zhejiang Prov, Hangzhou 310018, Peoples R China.;[Tan, Weishi] Hunan City Univ, Coll Informat & Elect Engn, All Solid State Energy Storage Mat & Devices Key L, Yiyang 413002, Peoples R China.;[Tan, Weishi] Nanjing Univ Sci & Technol, Dept Appl Phys, Key Lab Soft Chem & Funct Mat, Minist Educ, Nanjing 210094, Peoples R China.
通讯机构:
[Haiou Wang] K;Key Laboratory of Novel Materials for Sensor of Zhejiang Province, Institute of Material Physics, Hangzhou Dianzi University , Hangzhou 310018, China
摘要:
The magnetic properties, critical behavior, and magnetocaloric effect of perovskite NdMnO3 are studied. The Nd ordering is induced by the Mn ferromagnetic component with antiferromagnetic coupling with each other and then magnetization reversal occurs due to Mn moments reorientation induced by the ordering Nd moments, which explains the phenomenon of negative magnetization at low temperatures. The critical behavior of NdMnO3 is studied using Kouvel-Fisher and self-consistent methods. The results show that the Kouvel-Fisher method is reliable and critical exponents are coming out as beta = 0.462 for T-C = 11.15 K, gamma = 1.041 for T-C = 11.42 K, delta = 3.252 by critical isotherm analysis. Magnetic exchange distance may decay as J ( r ) & AP; r - 4.563, that is, somewhere between the three-dimensional Heisenberg model and the mean field model. Remarkably, three temperature transitions and the corresponding three extremum values including positive and negative entropy change are observed in NdMnO3, which is different from previous reports on NdMnO3. A positive entropy change as 3.82 J/kg K at 10-15 K for mu(0)& UDelta;H = 50 kOe and a negative entropy change as -0.557 J/kg K at around 8 K for mu(0)& UDelta;H = 5 kOe are found, which can be put down to a fast magnetization change of NdMnO3 because of the Nd moments ordering and Mn moments reorientation. Besides, an entropy change of 1.22 J/kg K is found for mu(0)& UDelta;H = 50 kOe at 80-85 K, which is corresponding to the Mn ferromagnetic ordering temperature. The relative cooling power of NdMnO3 reaches 105.9 J/kg, making it a promising candidate in the field of magnetic refrigeration. Published under an exclusive license by AIP Publishing.
作者机构:
[Su, Kunpeng; Zhang, Hui; Wang, Haiou; Yang, Dexin; Huang, Shuai; Huo, Dexuan; Wang, Yan] Hangzhou Dianzi Univ, Inst Mat Phys, Key Lab Novel Mat Sensor Zhejiang Prov, Hangzhou 310018, Peoples R China.;[Ni, Shenya] Zhejiang Univ, Interdisciplinary Lab Mech, Hangzhou 310013, Peoples R China.;[Tan, Weishi] Hunan City Univ, Coll Informat & Elect Engn, All Solid State Energy Storage Mat & Devices Key, Yiyang 413002, Peoples R China.;[Tan, Weishi] Nanjing Univ Sci & Technol, Minist Educ, Dept Appl Phys, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Peoples R China.
通讯机构:
[Haiou Wang; Dexuan Huo] K;Key Laboratory of Novel Materials for Sensor of Zhejiang Province, Institute of Material Physics, Hangzhou Dianzi University, Hangzhou, China<&wdkj&>Key Laboratory of Novel Materials for Sensor of Zhejiang Province, Institute of Material Physics, Hangzhou Dianzi University, Hangzhou, China
期刊:
Computers in Biology and Medicine,2022年149:105966 ISSN:0010-4825
通讯作者:
Kehua Guo<&wdkj&>Shuang Zhao
作者机构:
[Guo, Kehua; Wu, Zheng; Zhou, Jiancun] Cent South Univ, Sch Comp Sci & Engn, Changsha 410083, Peoples R China.;[Zhou, Jiancun] Hunan City Univ, Coll Informat & Elect Engn, Yiyang 413000, Peoples R China.;[Zhao, Shuang; Jiang, Zixi; Huang, Kai] Cent South Univ, Xiangya Hosp, Dept Dermatol, Changsha, Peoples R China.;[Zhao, Shuang; Jiang, Zixi; Huang, Kai] Cent South Univ, Xiangya Hosp, Hunan Engn Res Ctr Skin Hlth & Dis, Changsha, Peoples R China.;[Zhao, Shuang; Jiang, Zixi; Huang, Kai] Cent South Univ, Xiangya Hosp, Hunan Key Lab Skin Canc & Psoriasis, Changsha, Peoples R China.
通讯机构:
[Kehua Guo] S;[Shuang Zhao] D;School of Computer Science and Engineering, Central South University, Changsha 410083, China<&wdkj&>Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China<&wdkj&>Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China<&wdkj&>Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China<&wdkj&>National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, China