Ground-state phase diagram of the extended two-leg t-J ladder
文献类型：期刊论文
| 作者 | Lu, Xin; Qu, Dai-Wei; Qi, Yang3,4,5; Li, Wei2,6,7 ; Gong, Shou-Shu
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2023 |
| 卷号 | 107期号:12页码:125114 |
| 关键词 | RESONATING-VALENCE-BOND RENORMALIZATION-GROUP LUTTINGER PARAMETERS INSULATOR-TRANSITION TOMONAGA-LUTTINGER HUBBARD-MODEL SUPERCONDUCTIVITY SPIN SYMMETRY THEOREM |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.107.125114 |
| 英文摘要 | Inspired by the observation of a robust d-wave superconducting phase driven by tuning the next-nearestneighbor (NNN) electron hopping in recent density matrix renormalization group (DMRG) studies of sixand eight-leg t-J model, we systematically study the phase diagram of the two-leg t-J ladder with the NNN couplings (including NNN hopping and spin interaction) in a large region of doping level, by means of the DMRG calculations. Upon doping from half filling, we identify the Luther-Emery liquid (LEL) phase, which can be distinguished as the pairing-dominant and charge density-dominant regime by comparing the Luttinger parameter K rho. With the growing NNN couplings, pairing correlations are enhanced and correspondingly K rho increases, driving the system from the density-dominant to the pairing-dominant regime. In the TomonagaLuttinger liquid (TLL) phase in the larger doping region, we identify two TLL regimes with different features of charge density correlation. At the quarter filling (1/2 doping level), we find that the strong dimer orders of bond energy in the open system actually decay algebraically and thus do not indicate a spontaneous translational symmetry breaking. Our results show that in the LEL phase of the two-leg ladder, the NNN couplings seem to play the similar role as that on the wider t-J cylinder, and studies on this more accessible system can be helpful toward understanding the emergence of the remarkable d-wave superconducting phase on the wider system. |
| 学科主题 | Materials Science ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27991]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 2.Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China 4.Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China 5.Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China 6.Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 7.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 8.Beihang Univ, Peng Huanwu Collaborat Ctr Res & Educ, Beijing 100191, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Xin,Qu, Dai-Wei,Qi, Yang,et al. Ground-state phase diagram of the extended two-leg t-J ladder[J]. PHYSICAL REVIEW B,2023,107(12):125114. |
| APA | Lu, Xin,Qu, Dai-Wei,Qi, Yang,Li, Wei,&Gong, Shou-Shu.(2023).Ground-state phase diagram of the extended two-leg t-J ladder.PHYSICAL REVIEW B,107(12),125114. |
| MLA | Lu, Xin,et al."Ground-state phase diagram of the extended two-leg t-J ladder".PHYSICAL REVIEW B 107.12(2023):125114. |
入库方式： OAI收割
来源：理论物理研究所
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