Anderson localization of electron states in a quasicrystal

被引：13

作者：

Sarkar, Shuvam ^{[1
]}

Krajci, Marian ^{[2
]}

Sadhukhan, Pampa ^{[1
]}

Singh, Vipin Kumar ^{[1
]}

Gloskovskii, Andrei ^{[3
]}

Mandal, Prabhat ^{[4
]}

Fournee, Vincent ^{[5
]}

de Weerd, Marie-Cecile ^{[5
]}

Ledieu, Julian ^{[5
]}

Fisher, Ian R. ^{[6
,7
]}

Barman, Sudipta Roy ^{[1
]}

机构：

[1] UGC DAE Consortium Sci Res, Khandwa Rd, Indore 452001, Madhya Pradesh, India

[2] Slovak Acad Sci, Inst Phys, Dubravska Cesta 9, SK-84511 Bratislava, Slovakia

[3] DESY, Notkestr 85, D-22607 Hamburg, Germany

[4] Saha Inst Nucl Phys, HBNI, 1-AF Bidhannagar, Kolkata 700064, W Bengal, India

[5] Univ Lorraine, CNRS, UMR 7198, Inst Jean Lamour, Campus ARTEM,2 Allee Andre Guinier, F-54011 Nancy, France

[6] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[7] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW B | 2021年 / 103卷 / 24期

关键词：

METAL-INSULATOR-TRANSITION; MULTIFRACTAL WAVE-FUNCTIONS; ENERGY; CONDUCTIVITY; TRANSPORT; DISORDER; PSEUDOGAP; ALLOYS; PHASE; RESISTIVITY;

D O I：

10.1103/PhysRevB.103.L241106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of disorder on the critical electron states in a quasiperiodic lattice is a subject of intense research. In this work, we report the occurrence of Anderson localization in an icosahedral (i) polygrain quasicrystal Al-Pd-Re due to site disorder using hard x-ray photoemission spectroscopy, resistivity, and density functional theory (DFT). Photoemission spectroscopy shows that the density of states is enhanced at the Fermi level in polygrain i-Al-Pd-Re compared to single-grain i-Al-Pd-Re. In contrast, the conductivity of the former is an order of magnitude reduced compared to the latter, indicating that these electron states are localized. DFT shows that these states originate primarily from Re 5d-Pd 4d hybridization and are enhanced in polygrain i-Al-Pd-Re due to compositional difference, but are broadened because of disorder that brings about Anderson localization. This is established by the Mott variable range hopping behavior of conductivity, and the estimated localization length is 23 angstrom.

引用

页数：7

共 82 条

[1] Evidence for finite conductivity of icosahedral AlPdRe at T=0 K [J].

Ahlgren, M ;

Gignoux, C ;

Rodmar, M ;

Berger, C ;

Rapp, O .

PHYSICAL REVIEW B, 1997, 55 (18) :11915-11918

[2] ABSENCE OF DIFFUSION IN CERTAIN RANDOM LATTICES [J].

ANDERSON, PW .

PHYSICAL REVIEW, 1958, 109 (05) :1492-1505

[3] ELECTRONIC-STRUCTURES OF GALLIUM AND INDIUM ACROSS THE SOLID-LIQUID TRANSITION [J].

BARMAN, SR ;

SARMA, DD .

PHYSICAL REVIEW B, 1995, 51 (07) :4007-4013

[4] Relationship of phason strain and electronic properties in icosahedral Al-Pd-(Re,Mn) and Al-Cu-Os [J].

Beeli, C ;

Soltmann, C ;

Poon, SJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 294 :531-534

[5] NATURE OF ELECTRONIC STATES IN DISORDERED 1-DIMENSIONAL SYSTEMS [J].

BORLAND, RE .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1963, 274 (1356) :529-+

[6] Layer-dependent topological phase in a two-dimensional quasicrystal and approximant [J].

Cain, Jeffrey D. ;

Azizi, Amin ;

Conrad, Matthias ;

Griffin, Sinead M. ;

Zettl, Alex .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (42) :26135-26140

[7] Introduction to the standard reference data of electron energy loss spectra and their database: eel.geri.re.kr [J].

Chae J.E. ;

Kim J.-S. ;

Nam S.-Y. ;

Kim M.S. ;

Park J. .

Applied Microscopy, 2020, 50 (01)

[8] Higher-Order Topological Insulators in Quasicrystals [J].

Chen, Rui ;

Chen, Chui-Zhen ;

Gao, Jin-Hua ;

Zhou, Bin ;

Xu, Dong-Hui .

PHYSICAL REVIEW LETTERS, 2020, 124 (03)

[9] Madelung potentials and disorder broadening of core photoemission spectra in random alloys [J].

Cole, RJ ;

Brooks, NJ ;

Weightman, P .

PHYSICAL REVIEW LETTERS, 1997, 78 (19) :3777-3780

[10] Evidence for variable range hopping conductivity in the ordered quasicrystal i-AlPdRe [J].

Delahaye, J ;

Brison, JP ;

Berger, C .

PHYSICAL REVIEW LETTERS, 1998, 81 (19) :4204-4207

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