Quantum Tunneling in an Order-Parameter-Preserving Antiferromagnet |
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| Authors: | Zhao-Xian Yu Zhi-Yong Jiao Fu-Ping Liu |
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| Institution: | (1) Department of Physics, Beijing Information Science and Technology University, Beijing, 100101, China;(2) College of Physics Science and Technology, China University of Petroleum (East China), Dongying, 257061, China;(3) Department of Physics, Beijing Institute of Graphic Communication, Beijing, 102600, China |
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| Abstract: | We have studied quantum tunneling in an order-parameter-preserving antiferromagnet with the help of Holstein-Primakoff transformation.
It is found that, when the system being prepared in a coherent state, there exist the quantum tunneling between lattices k and k+1, k and k−1, respectively. In particular, when the lattice is infinitely long and the spin excitations are in the long-wavelength limit,
quantum tunneling disappear between lattices k and k+1, and that k and k−1, in this case the magnetic soliton appears. |
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| Keywords: | Order-parameter-preserving antiferromagnet Quantum tunneling |
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