Physical Review BPub Date : 2023-09-08DOI: 10.1103/PhysRevB.108.L121404
Sabin Regmi, Anup Pradhan Sakhya, Tharindu Fernando, Yuzhou Zhao, Dylan Jeff, Milo Sprague, Favian Gonzalez, Iftakhar Bin Elius, Mazharul Islam Mondal, Nathan Valadez, Damani Jarrett, Alexis Agosto, Jihui Yang, J. Chu, S. Khondaker, Xiaodong Xu, Ting Cao, M. Neupane
{"title":"Observation of flat and weakly dispersing bands in the van der Waals semiconductor Nb3Br8","authors":"Sabin Regmi, Anup Pradhan Sakhya, Tharindu Fernando, Yuzhou Zhao, Dylan Jeff, Milo Sprague, Favian Gonzalez, Iftakhar Bin Elius, Mazharul Islam Mondal, Nathan Valadez, Damani Jarrett, Alexis Agosto, Jihui Yang, J. Chu, S. Khondaker, Xiaodong Xu, Ting Cao, M. Neupane","doi":"10.1103/PhysRevB.108.L121404","DOIUrl":"https://doi.org/10.1103/PhysRevB.108.L121404","url":null,"abstract":"Niobium halides, Nb3X8 (X = Cl,Br,I), which are predicted two-dimensional magnets, have recently gotten attention due to their breathing kagome geometry. Here, we have studied the electronic structure of Nb3Br8 by using angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations. ARPES results depict the presence of multiple flat and weakly dispersing bands. These bands are well explained by the theoretical calculations, which show they have Nb d character indicating their origination from the Nb atoms forming the breathing kagome plane. This van der Waals material can be easily thinned down via mechanical exfoliation to the ultrathin limit and such ultrathin samples are stable as depicted from the time-dependent Raman spectroscopy measurements at room temperature. These results demonstrate that Nb3Br8 is an excellent material not only for studying breathing kagome induced flat band physics and its connection with magnetism, but also for heterostructure fabrication for application purposes.","PeriodicalId":48701,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48589113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physical Review BPub Date : 2023-09-08DOI: 10.1103/physrevb.108.125408
Shin Hayashi, H. Sugimoto, M. Fujii, D. Nesterenko, Z. Sekkat
{"title":"Formation of Fano line shapes in optical responses and spectra of internal fields of excitonic nanospheres","authors":"Shin Hayashi, H. Sugimoto, M. Fujii, D. Nesterenko, Z. Sekkat","doi":"10.1103/physrevb.108.125408","DOIUrl":"https://doi.org/10.1103/physrevb.108.125408","url":null,"abstract":"","PeriodicalId":48701,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45128874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physical Review BPub Date : 2023-09-08DOI: 10.1103/physrevb.108.115115
Qingxin Liu, Pei Sun, Fanyu Meng, Yan-jie Geng, Zhonghao Liu, Jian-Feng Zhang, Jingjing Gao, Zhicheng Jiang, Shangjie Tian, Xuan Luo, Yuping Sun, Zhihai Cheng, Kai Liu, H. C. Lei, Shancai Wang
{"title":"Existence of an ultraflat band in the charge density wave state of 4Hb−TaS","authors":"Qingxin Liu, Pei Sun, Fanyu Meng, Yan-jie Geng, Zhonghao Liu, Jian-Feng Zhang, Jingjing Gao, Zhicheng Jiang, Shangjie Tian, Xuan Luo, Yuping Sun, Zhihai Cheng, Kai Liu, H. C. Lei, Shancai Wang","doi":"10.1103/physrevb.108.115115","DOIUrl":"https://doi.org/10.1103/physrevb.108.115115","url":null,"abstract":"","PeriodicalId":48701,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47226329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physical Review BPub Date : 2023-09-08DOI: 10.1103/physrevb.108.115303
Igor L. C. Lima, M. Milošević, F. M. Peeters, A. Chaves
{"title":"Tuning of exciton type by environmental screening","authors":"Igor L. C. Lima, M. Milošević, F. M. Peeters, A. Chaves","doi":"10.1103/physrevb.108.115303","DOIUrl":"https://doi.org/10.1103/physrevb.108.115303","url":null,"abstract":"","PeriodicalId":48701,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45149398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physical Review BPub Date : 2023-09-07DOI: 10.1103/physrevb.108.094413
Ka Shen
{"title":"Electrical and magnetic control of spin-lattice configuration and magnon-ferron hybridization in a two-dimensional multiferroic model","authors":"Ka Shen","doi":"10.1103/physrevb.108.094413","DOIUrl":"https://doi.org/10.1103/physrevb.108.094413","url":null,"abstract":"","PeriodicalId":48701,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45210403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physical Review BPub Date : 2023-09-07DOI: 10.1103/physrevb.108.l121403
D. S. Eliseev, M. Boev, V. Kovalev, I. Savenko
{"title":"Piezoresistive effect in two-dimensional Dirac materials","authors":"D. S. Eliseev, M. Boev, V. Kovalev, I. Savenko","doi":"10.1103/physrevb.108.l121403","DOIUrl":"https://doi.org/10.1103/physrevb.108.l121403","url":null,"abstract":"","PeriodicalId":48701,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42465422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physical Review BPub Date : 2023-09-07DOI: 10.1103/physrevb.108.094412
A. Sazonov, H. Thoma, R. Dutta, M. Meven, A. Gukasov, R. Fittipaldi, V. Granata, T. Masuda, B. Náfrádi, V. Hutanu
{"title":"Magnetic structure of the magnetoelectric material Ba2MnGe2O7","authors":"A. Sazonov, H. Thoma, R. Dutta, M. Meven, A. Gukasov, R. Fittipaldi, V. Granata, T. Masuda, B. Náfrádi, V. Hutanu","doi":"10.1103/physrevb.108.094412","DOIUrl":"https://doi.org/10.1103/physrevb.108.094412","url":null,"abstract":"","PeriodicalId":48701,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45122879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}