scholarly journals Single-hole wave function in two dimensions: A case study of the doped Mott insulator

2019 ◽  
Vol 99 (20) ◽  
Author(s):  
Shuai Chen ◽  
Qing-Rui Wang ◽  
Yang Qi ◽  
D. N. Sheng ◽  
Zheng-Yu Weng
Keyword(s):  
Wave Function ◽  
Mott Insulator ◽  
Two Dimensions ◽  
Single Hole ◽  
Doped Mott Insulator ◽  
Hole Wave Function

scholarly journals Two-component electronic phase separation in the doped Mott insulator Y1−xCaxTiO3

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
S. Hameed ◽  
J. Joe ◽  
D. M. Gautreau ◽  
J. W. Freeland ◽  
T. Birol ◽  
...  
Keyword(s):  
Phase Separation ◽  
Mott Insulator ◽  
Electronic Phase Separation ◽  
Electronic Phase ◽  
Two Component ◽  
Doped Mott Insulator

scholarly journals Time-reversal symmetry breaking superconducting ground state in the doped Mott insulator on the honeycomb lattice

2013 ◽  
Vol 88 (15) ◽  
Author(s):  
Zheng-Cheng Gu ◽  
Hong-Chen Jiang ◽  
D. N. Sheng ◽  
Hong Yao ◽  
Leon Balents ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Ground State ◽  
Time Reversal ◽  
Mott Insulator ◽  
Honeycomb Lattice ◽  
Time Reversal Symmetry ◽  
Doped Mott Insulator

scholarly journals FINAL-YEAR PRE-SERVICE PRIMARY SCHOOL TEACHERS’ UNDERSTANDING OF INQUIRY-BASED-SCIENCE TEACHING

2020 ◽  
Vol 19 (3) ◽  
pp. 454-466 ◽  
Author(s):  
Khanyisile Brenda Nhlengethwa ◽  
Nadaraj Govender ◽  
Doras Sibanda
Keyword(s):  
Primary School ◽  
Science Teaching ◽  
Teacher Educators ◽  
Two Dimensions ◽  
Structured Interviews ◽  
School Teachers ◽  
Pedagogical Approach ◽  
Primary School Teachers ◽  
Directed Learning

Teachers’ accurate understanding of Inquiry-Based Science Teaching (IBST) is crucial for the proper enactment of this pedagogical approach. In this research, a qualitative case study design was used to explore and interpret pre-service teachers’ understanding of IBST at the conclusion of their three-year primary diploma at a university in Swaziland. Data were collected using a semi-structured teaching scenario-based questionnaire in conjunction with individual semi-structured interviews. Thirty-four participants completed the questionnaire and eight of them were subsequently interviewed. The data were analyzed using a conceptual framework of IBST that outlines two dimensions of IBST; namely the cognitive and guidance dimensions. The results show that in the cognitive dimension, participants focused mainly on the procedural domain. With regard to the guidance dimension, they associated the pedagogical approach more with teacher-directed than learner-directed learning activities. This paper recommends that in training pre-service primary school teachers, teacher educators must broaden their focus from procedural aspects of IBST to include all its aspects; thereby developing their pre-service teachers’ holistic and deep experiences of IBST. Keywords: inquiry-based science teaching, primary school, pre-service teachers, scenario-based questionnaire, IBST understanding.

scholarly journals Group-works: exploring multiplex networks, leadership and group performance

2019 ◽  
Vol 6 (4) ◽  
pp. 227-245 ◽  
Author(s):  
Pamela Yeow ◽  
Alison Dean ◽  
Danielle Tucker ◽  
Linda Pomeroy
Keyword(s):  
Positive Reinforcement ◽  
Group Performance ◽  
Two Dimensions ◽  
Group Effectiveness ◽  
Content Type ◽  
Multiplex Networks ◽  
Study Approach ◽  
Group Members ◽  
Knowledge Intensive

Purpose The purpose of this paper is to explore the effect of “multiplex” (multiple overlapping) networks and leadership on group performance in a higher education setting. Design/methodology/approach Using a combination of social network analysis and interviews, the authors employ a case study approach to map the connections between academic group members. This paper analyses the relationship between this mapping and academic performance. Findings The authors identified two dimensions which influence group effectiveness: multiplex networks and distributed–coordinated leadership. Where networks are built across tasks, inter-relationships develop that lead to greater group performance. Practical implications Where group members create a dense hive of interconnectivity and are active across all group tasks, and also informally, this increases the opportunity for knowledge sharing. When this is similarly experienced by a majority of group members, there is positive reinforcement, resulting in greater group effectiveness. Originality/value This paper highlights the importance of the richness of formal ties in knowledge-intensive settings. This paper is the first to differentiate between formal connections between colleagues related to different tasks within their role. This suggests that dense configurations of informal ties are insufficient; they must be coupled with strong ties around formal activity and demonstrative leadership.

scholarly journals The analytical description of a doped Mott insulator

2019 ◽  
Vol 33 (29) ◽  
pp. 1950355
Author(s):  
Yu-Liang Liu
Keyword(s):  
Green’S Function ◽  
Coulomb Interaction ◽  
Green's Function ◽  
Doping Concentration ◽  
Cuprate Superconductors ◽  
Mott Insulator ◽  
Spin Fluctuations ◽  
Hole Doping ◽  
Charge Fluctuation ◽  
Doped Mott Insulator

With the hierarchical Green’s function approach, we study a doped Mott insulator described with the Hubbard model by analytically solving the equations of motion of an one-particle Green’s function and related multiple-point correlation functions, and find that the separation of the spin and charge degrees of freedom of the electrons is an intrinsic character of the doped Mott insulator. For enough of large on-site repulsive Coulomb interaction, we show that the spectral weight of the one-particle Green’s function is proportional to the hole doping concentration that is mainly produced by the charge fluctuation of electrons, while the excitation spectrum of the electrons is composed of two parts: One is contributed by the spin fluctuation of the electrons, which is proportional to the hole doping concentration, and another one is coming from the coupling between the charge and spin fluctuations of the electrons that takes the maximum at undoping. All of these low energy/temperature physical properties originate from the strong on-site Coulomb interaction. The present results are consistent with the spectroscopy observations of the cuprate superconductors and the numerical calculations in normal state above the pseudogap regime.

scholarly journals Non-Fermi-liquid regime of a doped Mott insulator

1999 ◽  
Vol 59 (8) ◽  
pp. 5341-5360 ◽  
Author(s):  
Olivier Parcollet ◽  
Antoine Georges
Keyword(s):  
Fermi Liquid ◽  
Mott Insulator ◽  
Doped Mott Insulator
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