Magnetic phase diagram of the infinite-U Hubbard model with nearest-and next-nearest-neighbor hoppings

Blesio G. G.; Gonzalez M. G.; Lisandrini F. T.

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Magnetic phase diagram of the infinite-U Hubbard model with nearest-and next-nearest-neighbor hoppings

机译：Infinite-U Hubbard模型的磁相图，具有最近和下邻邻居的跳线

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We study the infinite-U Hubbard model on ladders of two, four, and six legs with nearest- (t) and next-nearest- (t') neighbor hoppings by means of the density-matrix renormalization group algorithm. In particular, we analyze the stability of the Nagaoka state for several values of t' when we vary the electron density rho from half filling to the low-density limit. We build the two-dimensional phase diagram, where the fully spin polarized and paramagnetic states prevail. We find that the inclusion of a nonfrustrating next-nearest-neighbor hopping stabilizes the fully spin polarized phase up until vertical bar t'/t vertical bar = 0.5. Surprisingly, for this value of t', the ground state is fully spin polarized for almost any electron density 1 greater than or similar to rho greater than or similar to 0, connecting the Nagaoka state to itinerant ferromagnetism at low density. Also, we find that the previously found checkerboard insulator phase at t' = 0 and rho = 0.75 is unstable against t'.

机译：我们通过密度 - 矩阵重新定位组算法研究了梯子上的梯子上的梯子上的无限U次哈布德模型和近六条腿的梯子和下一个最近的（t'）跳板。特别是，当我们改变从半填充到低密度极限的电子密度rho时，我们将Nagaoka状态的稳定性分析为几个值。我们构建了二维相图，其中完全自旋极化和顺磁态占上风。我们发现包含非常规的下一个最近邻跳动稳定完全自旋极化阶段，直到垂直条T'/ T垂直条= 0.5。令人惊讶的是，对于T'的这种值，地状态是完全自旋的，几乎任何电子密度1大于或类似于大于或类似于0的rho，将nagaoka状态连接到低密度的渐近铁磁性。此外，我们发现先前发现的棋盘绝缘子阶段在t'= 0和rho = 0.75对T'不稳定。

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《Physical review》 |2019年第17期|174411.1-174411.7|共7页
作者
Blesio G. G.; Gonzalez M. G.; Lisandrini F. T.;
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Consejo Nacl Invest Cient & Tecn Inst Fis Rosario Blvd 27 Febrero 210 Bis RA-2000 Rosario Santa Fe Argentina;

Consejo Nacl Invest Cient & Tecn Inst Fis Rosario Blvd 27 Febrero 210 Bis RA-2000 Rosario Santa Fe Argentina;

Consejo Nacl Invest Cient & Tecn Inst Fis Rosario Blvd 27 Febrero 210 Bis RA-2000 Rosario Santa Fe Argentina;

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1. Magnetic phase diagram of the infinite-U Hubbard model with nearest-and next-nearest-neighbor hoppings [J] . Blesio G. G., Gonzalez M. G., Lisandrini F. T. Physical review . 2019,第17期

机译：带有最近跳和最近跳的无限U Hubbard模型的磁相图
2. Magnetic phase diagram of the infinite-U Hubbard model with nearest-and next-nearest-neighbor hoppings [J] . Blesio G. G., Gonzalez M. G., Lisandrini F. T. Physical review, B . 2019,第17期

机译：Infinite-U Hubbard模型的磁相图，具有最近和下邻邻居的跳线
3. Ferromagnetic transition and phase diagram of the one-dimensional Hubbard model with next-nearest-neighbor hopping [J] . Daul S., Noack RM. Physical Review, B. Condensed Matter . 1998,第5期

机译：一近邻跳频的一维Hubbard模型的铁磁跃迁和相图
4. Phase diagram of the magnetic state obtained from a two-particle self-consistent analysis of the half-filled Hubbard model on a honeycomb lattice [C] . Hirohito Aizawa International Conference on Low Temperature Physics . 2017

机译：从蜂窝格子上的半填充的哈贝德模型的双粒子自我一致性分析获得的磁状态相图
5. Magnetic phase diagram of triangular lattice antiferromagnet Ba3MNb2O9 (M = Co, Mn) and its multiferroicity. [D] . Lee, Minseong. 2016

机译：三角晶格反铁磁体Ba3MNb2O9（M = Co，Mn）的磁相图及其多铁性。
6. Strain-tuned enhancement of ferromagnetic TC to 176 K in Sm-doped BiMnO3 thin films and determination of magnetic phase diagram [O] . Eun-Mi Choi, Josée E. Kleibeuker, Judith L. MacManus-Driscoll -1

机译：Sm掺杂BiMnO3薄膜中铁磁TC的应变调谐增强至176 K和磁相图的确定
7. Ferromagnetic transition and phase diagram of the one-dimensional Hubbard model with next-nearest-neighbor hopping [O] . Daul, S., Noack, R. M. 1997

机译：一维的铁磁跃迁和相图 Hubbard模型，具有下一个最近邻居跳跃
8. Phase diagram of the Hubbard model with arbitrary band filling: renormalization group approach [R] . Cannas, S. A. , Tsallis, C. 1991

机译：具有任意带填充的Hubbard模型的相图：重整化组方法

Magnetic phase diagram of the infinite-U Hubbard model with nearest-and next-nearest-neighbor hoppings

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