Fermi states and anisotropy of Brillouin zone scattering in the decagonal Al-Ni-Co quasicrystal

被引：14

作者：

Rogalev, V. A. ^{[1
]}

Groening, O. ^{[2
]}

Widmer, R. ^{[2
]}

Dil, J. H. ^{[1
,3
]}

Bisti, F. ^{[1
]}

Lev, L. L. ^{[1
,4
]}

Schmitt, T. ^{[1
]}

Strocov, V. N. ^{[1
]}

机构：

[1] Paul Scherrer Inst, Dept Synchrotron Radiat & Nanotechnol SYN, Swiss Light Source, CH-5232 Villigen, Switzerland

[2] Swiss Fed Labs Mat Sci & Technol, EMPA, Dept Adv Mat & Surfaces, CH-8600 Dubendorf, Switzerland

[3] Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland

[4] Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia

来源：

NATURE COMMUNICATIONS | 2015年 / 6卷

关键词：

ELECTRONIC-STRUCTURE; E/A DETERMINATION; RECIPROCAL SPACE; SPECIAL POINTS; PHOTOEMISSION; APPROXIMANTS; DYNAMICS; ENERGY; FE; SI;

D O I：

10.1038/ncomms9607

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Quasicrystals (QCs) are intermetallic alloys that have excellent long-range order but lack translational symmetry in at least one dimension. The valence band electronic structure near the Fermi energy E-F in such materials is of special interest since it has a direct relation to their unusual physical properties. However, the Fermi surface (FS) topology as well as the mechanism of QC structure stabilization are still under debate. Here we report the first observation of the three-dimensional FS and valence band dispersions near E-F in decagonal Al70Ni20Co10 (d-AlNiCo) QCs using soft X-ray angle-resolved photoemission spectroscopy. We show that the FS, formed by dispersive Al sp-states, has a multicomponent character due to a large contribution from high-order bands. Moreover, we discover that the magnitude of the gap at the FS related to the interaction with Brillouin zone boundary (Hume-Rothery gap) critically differs for the periodic and quasiperiodic directions.

引用

页数：7

共 50 条

[21] ALCHEMI STUDIES ON Al-Ni-Co DECAGONAL QUASICRYSTALS
Saitoh, K.
Tanaka, M.
Tsai, A. P.
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2002, 58 : C236 - C236
[22] Plastic deformation of decagonal Al-Ni-Co quasicrystals
Feuerbacher, M
Bartsch, M
Grushko, B
Messerschmidt, U
Urban, K
PHILOSOPHICAL MAGAZINE LETTERS, 1997, 76 (06) : 369 - 375
[23] Atomic dynamics in decagonal Al-Ni-Co quasicrystals
Gähler, F
Hocker, S
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2004, 334 : 308 - 311
[24] Formation of a quasicrystalline Pb monolayer on the 10-fold surface of the decagonal Al-Ni-Co quasicrystal
Smerdon, J. A.
Leung, L.
Parle, J. K.
Jenks, C. J.
McGrath, R.
Fournee, V.
Ledieu, J.
SURFACE SCIENCE, 2008, 602 (14) : 2496 - 2501
[25] An ordered arrangement of atom columnar clusters in a pentagonal quasiperiodic lattice of an Al-Ni-Co decagonal quasicrystal
Hiraga, K
Ohsuna, T
Nishimura, S
PHILOSOPHICAL MAGAZINE LETTERS, 2000, 80 (09) : 653 - 659
[26] The structure of an Al-Ni-Co decagonal quasicrystal studied by atomic-scale electron microscopic observations
Hiraga, K
Ohsuna, T
MATERIALS TRANSACTIONS, 2001, 42 (03) : 509 - 513
[27] Decagonal quasicrystals in Al-Ni-Co:: generality and particulars
Grushko, B
Döblinger, M
ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 2004, 219 (07): : 447 - 455
[28] Plasticity of Al-Ni-Co decagonal single quasicrystals
Edagawa, K
Ohta, S
Takeuchi, S
Kabutoya, E
Guo, JQ
Tsai, AP
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 294 : 748 - 752
[29] Self-diffusion of Ni and Co in decagonal Al-Ni-Co quasicrystals
Khoukaz, C
Galler, R
Feuerbacher, M
Mehrer, H
DIFFUSIONS IN MATERIALS: DIMAT2000, PTS 1 & 2, 2001, 194-1 : 873 - 882
[30] Crystalline Textures on the Al-Ni-Co Quasicrystal Surface
Erbudak, Mehmet
Longchamp, Jean-Nicolas
Weisskopf, Yves
TURKISH JOURNAL OF PHYSICS, 2005, 29 (05): : 277 - 285

← 1 2 3 4 5 →