Modulations of orders around magnetic impurities in high-temperature superconductors

✍ Scribed by Guo-Qiao Zha; Jing-Chao Wang; Li-Jing Jin; Lin Wen; Ling-Feng Zhang; Hao Meng; Liang-Ma Shi; Hong-Wei Zhao; Shi-Ping Zhou

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 898 KB
• Volume: 150
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2010.06.048

✦ Synopsis

By using a model Hamiltonian with competing antiferromagnetic (AFM) spin density wave (SDW) and d-wave superconductivity orders, the spin and charge structures around magnetic impurities in hightemperature superconductors is investigated. We find one-dimensional stripe and two-dimensional checkerboard-like modulations of orders around a magnetic impurity. A phase diagram of next-nearestneighbor hopping strength |t | versus AFM interaction U for various patterns of orders in the presence or absence of a magnetic impurity is given. Moreover, the impurity-induced stripe orders can transit to two-dimensional modulations for smaller impurity strength.