Unusual field-induced transitions in exactly solved mixed spin-(1/2, 1) Ising chain with axial and rhombic zero-field splitting parameters |
| |
| Authors: | Jozef Strečka Michal Dančo |
| |
| Institution: | 1. School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India;2. Indian Institute of Technology Rajasthan, Jodhpur 342011, India;3. School of Natural Sciences, Shiv Nadar University, Gautam Budh Nagar, UP 203207, India;1. Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China;2. Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China;1. Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China;2. Center for Theoretical Physics, Institute of Physics, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam;1. INFN-Sezione di Milano, via Celoria 16, 20133 Milano, Italy;2. Università degli Studi della Calabria, Arcavacata di Rende (Cosenza), Italy;3. Università di Trieste and INFN-Sezione di Trieste, Via Valerio 2, 34127 Trieste, Italy;4. Università degli Studi di Milano, via Celoria 16, 20133 Milano, Italy;1. Departamento de Física, Universidad Nacional de Colombia, 111321 Bogotá, Colombia;2. Programa de Física, Universidad del Quindío, 630004 Armenia, Colombia |
| |
| Abstract: | The mixed spin-(1/2, 1) Ising chain with axial and rhombic zero-field splitting parameters in the presence of the longitudinal magnetic field is exactly solved within the framework of decoration-iteration transformation and transfer-matrix method. Our particular emphasis is laid on an investigation of the influence of the rhombic term, which is responsible for an onset of quantum entanglement between two magnetic states Skz=±1 of the spin-1 atoms. It is shown that the rhombic term gradually destroys a classical ferrimagnetic order in the ground state and simultaneously causes diversity in magnetization curves including intermediate plateau regions, regions with a continuous change in the magnetization as well as several unusual field-induced transitions accompanied with magnetization jumps. Another interesting findings concern with an appearance of the round minimum in the temperature dependence of susceptibility times temperature data, the double-peak zero-field specific heat curves and the enhanced magnetocaloric effect. The temperature dependence of the specific heat with three separate maxima may also be detected when driving the system through the axial and rhombic zero-field splitting parameters close enough to a phase boundary between the ferrimagnetic and disordered states and applying sufficiently small longitudinal magnetic field. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
