Related papers: Fermi Surface and Band Renormalization in (Sr,K)Fe…

Fermi Surface and Band Structure of (Ca,La)FeAs2 Superconductor from Angle-Resolved Photoemission Spectroscopy

The (Ca,R)FeAs2 (R=La,Pr and etc.) superconductors with a signature of superconductivity transition above 40 K possess a new kind of block layers that consist of zig-zag As chains. In this paper, we report the electronic structure of the…

Superconductivity · Physics 2013-11-28 Xu Liu , Defa Liu , Lin Zhao , Qi Guo , Qingge Mu , Dongyun Chen , Bing Shen , Hemian Yi , Jianwei Huang , Junfeng He , Yingying Peng , Yan Liu , Shaolong He , Guodong Liu , Xiaoli Dong , Jun Zhang , Chuangtian Chen , Zuyan Xu , Zhi-an Ren , X. J. Zhou

Electronic structure of optimally doped pnictide Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$: a comprehensive ARPES investigation

We have conducted a comprehensive angle-resolved photoemission study on the normal state electronic structure of the Fe-based superconductor Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$. We have identified four dispersive bands which cross the Fermi…

Superconductivity · Physics 2011-04-08 H. Ding , K. Nakayama , P. Richard , S. Souma , T. Sato , T. Takahashi , M. Neupane , Y. -M. Xu , Z. -H. Pan , A. V. Federov , Z. Wang , X. Dai , Z. Fang , G. F. Chen , J. L. Luo , N. L. Wang

Fermi surfaces and quasi-particle band dispersions of the iron pnictides superconductor KFe2As2 observed by angle-resolved photoemission spectroscopy

We have performed an angle-resolved photoemission study of the iron pnictide superconductor KFe2As2 with Tc 4 K. Most of the observed Fermi surfaces show almost two-dimensional shapes, while one of the quasi-particle bands near the Fermi…

Strongly Correlated Electrons · Physics 2012-01-24 T. Yoshida , I. Nishi , A. Fujimori , M. Yi , R. G. Moore , D. -H. Lu , Z. -X. Shen , K. Kihou , P. M. Shirage , H. Kito , C. H. Lee , A. Iyo , H. Eisaki , H. Harima

Electronic structure of BaNi$_2$P$_2$ observed by angle-resolved photoemission spectroscopy

We have performed an angle-resolved photoemission spectroscopy (ARPES) study of BaNi$_2$P$_2$ which shows a superconducting transition at $T_c$ $\sim$ 2.5 K. We observed hole and electron Fermi surfaces (FSs) around the Brillouin zone…

Superconductivity · Physics 2015-08-06 S. Ideta , T. Yoshida , M. Nakajima , W. Malaeb , H. Kito , H. Eisaki , A. Iyo , Y. Tomioka , T. Ito , K. Kihou , C. H. Lee , Y. Kotani , K. Ono , S. K. Mo , Z. Hussain , Z. -X. Shen , H. Harima , S. Uchida , A. Fujimori

Fe-based superconductors: an angle-resolved photoemission spectroscopy perspective

Angle-resolved photoemission spectroscopy allows direct visualization and experimental determination of the electronic structure of crystals in the momentum space, including the precise characterization of the Fermi surface and the…

Superconductivity · Physics 2011-11-29 P. Richard , T. Sato , K. Nakayama , T. Takahashi , H. Ding

Is BaCr$_2$As$_2$ symmetrical to BaFe$_2$As$_2$ with respect to half $3d$ shell filling?

We have performed an angle-resolved photoemission spectroscopy study of BaCr$_2$As$_2$, which has the same crystal structure as BaFe$_2$As$_2$, a parent compound of Fe-based superconductors. We determine the Fermi surface of this material…

Superconductivity · Physics 2017-05-31 P. Richard , A. van Roekeghem , B. Q. Lv , T. Qian , T. K. Kim , M. Hoesch , J. -P. Hu , Athena S. Sefat , Silke Biermann , H. Ding

Band structure and Fermi surfaces of the reentrant ferromagnetic superconductor Eu(Fe0.86Ir0.14)2As2

The electronic structure of the reentrant superconductor Eu(Fe$_{0.86}$Ir$_{0.14}$)$_{2}$As$_{2}$ (T$_c$ = 22 K) with coexisting ferromagnetic order (T$_M$ = 18 K) is investigated using angle-resolved photoemission spectroscopy (ARPES) and…

Materials Science · Physics 2018-06-19 S. Xing , J. Mansart , V. Brouet , M. Sicot , Y. Fagot-Revurat , B. Kierren , P. Le Fèvre , F. Bertran , J. E. Rault , U. B. Paramanik , Z. Hossain , A. Chainani , D. Malterre

Strongly three-dimensional electronic structure and Fermi Surfaces of SrFe$_{2}$(As$_{0.65}$P$_{0.35}$)$_{2}$: Comparison with BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$

The isovalent-substituted iron-pnictide superconductor SrFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$ ($x$=0.35) has a slightly higher optimum critical temperature than the similar system BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$, and its parent compound…

Superconductivity · Physics 2015-06-18 H. Suzuki , T. Kobayashi , S. Miyasaka , T. Yoshida , L. C. C. Ambolode , S. Ideta , M. Yi , M. Hashimoto , D. H. Lu , Z. -X. Shen , K. Ono , H. Kumigashira , S. Tajima , A. Fujimori

Band Structure and Fermi Surface of an Extremely Overdoped Iron-Based Superconductor KFe2As2

We have performed high-resolution angle-resolved photoemission spectroscopy on heavily overdoped KFe_2As_2 (transition temperature (Tc = 3 K). We observed several renormalized bands near the Fermi level with a renormalization factor of 2-4.…

Superconductivity · Physics 2015-05-13 T. Sato , K. Nakayama , Y. Sekiba , P. Richard , Y. -M. Xu , S. Souma , T. Takahashi , G. F. Chen , J. L. Luo , N. L. Wang , H. Ding

Evidence for conventional superconductivity in SrPd2Ge2

Electronic structure of SrPd2Ge2 single crystals is studied by angle-resolved photoemission spectroscopy (ARPES), scanning tunneling spectroscopy (STS) and band-structure calculations within the local-density approximation (LDA). The STS…

Superconductivity · Physics 2012-05-16 T. K. Kim , A. N. Yaresko , V. B. Zabolotnyy , A. A. Kordyuk , D. V. Evtushinsky , N. H. Sung , B. K. Cho , T. Samuely , P. Szabó , J. G. Rodrigo , J. T. Park , D. S. Inosov , P. Samuely , B. Büchner , S. V. Borisenko

Common ($\pi$,$\pi$) Band Folding and Surface Reconstruction in FeAs-Based Superconductors

High resolution angle-resolved photoemission spectroscopy (ARPES) measurements are carried out on CaKFe$_4$As$_4$, KCa$_2$Fe$_4$As$_4$F$_2$ and (Ba$_{0.6}$K$_{0.4}$)Fe$_2$As$_2$ superconductors. Clear evidence of band folding between the…

Superconductivity · Physics 2021-07-07 Yongqing Cai , Tao Xie , Huan Yang , Dingsong Wu , Jianwei Huang , Wenshan Hong , Lu Cao , Chang Liu , Cong Li , Yu Xu , Qiang Gao , Taimin Miao , Guodong Liu , Shiliang Li , Li Huang , Huiqian Luo , Zuyan Xu , Hongjun Gao , Lin Zhao , X. J. Zhou

Common Fermi Surface Topology and Nodeless Superconducting Gap in K0.68Fe1.79Se2 and (Tl0.45K0.34)Fe1.84Se2 Superconductors Revealed from Angle-Resolved Photoemission Spectroscopy

We carried out high resolution angle-resolved photoemission measurements on the electronic structure and superconducting gap of K_0.68Fe_1.79Se_2 (T_c=32 K) and (Tl_0.45K_0.34)Fe_1.84Se_2 (T_c=28 K) superconductors. In addition to the…

Superconductivity · Physics 2015-05-27 Lin Zhao , Daixiang Mou , Shanyu Liu , Xiaowen Jia , Junfeng He , Yingying Peng , Li Yu , Xu Liu , Guodong Liu , Shaolong He , Xiaoli Dong , Jun Zhang , J. B. He , D. M. Wang , G. F. Chen , J. G. Guo , X. L. Chen , Xiaoyang Wang , Qinjun Peng , Zhimin Wang , Shenjin Zhang , Feng Yang , Zuyan Xu , Chuangtian Chen , X. J. Zhou

Angle-resolved spectroscopy study of Ni-based superconductor SrNi$_2$As$_2$

We performed an angle-resolved photoemission spectroscopy study of the Ni-based superconductor SrNi$_2$As$_2$. Electron and hole Fermi surface pockets are observed, but their different shapes and sizes lead to very poor nesting conditions.…

Superconductivity · Physics 2016-08-10 L. -K. Zeng , P. Richard , A. van Roekeghem , J. -X. Yin , S. -F. Wu , Z. G. Chen , N. L. Wang , S. Biermann , T. Qian , H. Ding

A re-examination of the electronic structure of Bi_2Sr_2CaCu_2O_{8+d} and Bi_2Sr_2Cu_1O_{6+d} - An electron-like Fermi Surface and the absence of flat bands at $E_F$

We present a re-examination of the electronic structure and Fermi Surface (FS) of Bi-Sr-Ca-Cu-O (BSCCO) as obtained from angle-resolved photoemission experiments. By applying a stricter set of FS crossing criteria as well as by varying the…

Strongly Correlated Electrons · Physics 2007-05-23 Y. D. Chuang , A. D. Gromko , D. S. Dessau , Y. Aiura , Y. Yamaguchi , K. Oka , A. J. Arko , J. Joyce , H. Eisaki , S. I. Uchida , K. Nakamura , Yoichi Ando

Bandwidth and Electron Correlation-Tuned Superconductivity in Rb$_{0.8}$Fe$_{2}$(Se$_{1-z}$S$_z$)$_2$

We present a systematic angle-resolved photoemission spectroscopy study of the substitution-dependence of the electronic structure of Rb$_{0.8}$Fe$_{2}$(Se$_{1-z}$S$_z$)$_2$ (z = 0, 0.5, 1), where superconductivity is continuously…

Superconductivity · Physics 2015-12-17 M. Yi , Meng Wang , A. F. Kemper , S. -K. Mo , Z. Hussain , E. Bourret-Courchesne , A. Lanzara , M. Hashimoto , D. H. Lu , Z. -X. Shen , Robert J. Birgeneau

Drastic electronic structure reconstruction of Ca$_{1-x}$Pr$_x$Fe$_2$As$_2$ in the collapsed tetragonal phase

We report the electronic structure reconstruction of Ca$_{1-x}$Pr$_x$Fe$_2$As$_2$ ($x$ = 0.1 and 0.15) in the low temperature collapsed tetragonal (CT) phase observed by angle-resolved photoemission spectroscopy. Different from…

Superconductivity · Physics 2014-12-24 D. F. Xu , D. W. Shen , J. Jiang , Z. R. Ye , X. Liu , X. H. Niu , H. C. Xu , Y. J. Yan , T. Zhang , B. P. Xie , D. L. Feng

Angle-resolved photoemission study of USb2: the 5f band structure

Single crystal antiferromagnetic USb2 was studied at 15K by angle-resolved photoemission with an overall energy resolution of 24 meV. The measurements unambiguously show the dispersion of extremely narrow bands situated near the Fermi…

Condensed Matter · Physics 2009-11-10 E. Guziewicz , T. Durakiewicz , M. T. Butterfield , C. G. Olson , J. J. Joyce , A. J. Arko , J. L. Sarrao , D. P. Moore , L. Morales

Electronic structure reconstruction by orbital symmetry breaking in IrTe2

We report an angle-resolved photoemission spectroscopy (ARPES) study on IrTe2 which exhibits an interesting lattice distortion below 270 K and becomes triangular lattice superconductors by suppressing the distortion via chemical…

Superconductivity · Physics 2013-08-05 D. Ootsuki , S. Pyon , K. Kudo , M. Nohara , M. Horio , T. Yoshida , A. Fujimori , M. Arita , H. Anzai , H. Namatame , M. Taniguchi , N. L. Saini , T. Mizokawa

Fermi surface of Ba{1-x}KxFe2As2 as probed by angle-resolved photoemission

Here we apply high resolution angle-resolved photoemission spectroscopy (ARPES) using a wide excitation energy range to probe the electronic structure and the Fermi surface topology of the Ba1-xKxFe2As2 (Tc = 32 K) superconductor. We find…

Superconductivity · Physics 2009-06-19 V. B. Zabolotnyy , D. V. Evtushinsky , A. A. Kordyuk , D. S. Inosov , A. Koitzsch , A. V. Boris , G. L. Sun , C. T. Lin , M. Knupfer , B. Buechner , A. Varykhalov , R. Follath , S. V. Borisenko

Absence of holelike Fermi surface in superconducting K0.8Fe1.7Se2 revealed by ARPES

We have performed an angle-resolved photoemission spectroscopy study of the new iron-based superconductor K0.8Fe1.7Se2 (Tc ~ 30 K). Clear band dispersion is observed with the overall bandwidth renormalized by a factor of 2.5 compared to our…

Superconductivity · Physics 2011-05-05 T. Qian , X. -P. Wang , W. -C. Jin , P. Zhang , P. Richard , G. Xu , X. Dai , Z. Fang , J. -G. Guo , X. -L. Chen , H. Ding