Metal-insulator transition in a two-dimensional system of chiral unitary class

被引：4

作者：

Karcher, Jonas F. ^{[1
,2
,3
]}

Gruzberg, Ilya A. ^{[4
]}

Mirlin, Alexander D. ^{[2
,3
]}

机构：

[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[2] Karlsruhe Inst Technol, Inst Quantum Mat & Technol, D-76021 Karlsruhe, Germany

[3] Karlsruhe Inst Technol, Inst Theorie Kondensierten Materie, D-76128 Karlsruhe, Germany

[4] Ohio State Univ, Dept Phys, 191 West Woodruff Ave, Columbus, OH 43210 USA

来源：

PHYSICAL REVIEW B | 2023年 / 107卷 / 02期

关键词：

RANDOM HOPPING FERMIONS; ANDERSON MODEL; CRITICAL-BEHAVIOR; QUANTUM WIRES; LOCALIZATION; DELOCALIZATION; DIMENSIONS; EXPONENTS; DISORDER; LATTICES;

D O I：

10.1103/PhysRevB.107.L020201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We perform a numerical investigation of Anderson metal-insulator transition (MIT) in a two-dimensional system of chiral symmetry class AIII by combining finite-size scaling, transport, density of states, and multifrac-tality studies. The results are in agreement with the a-model renormalization-group theory where MIT is driven by proliferation of vortices. We determine the phase diagram and find an apparent nonuniversality of several parameters on the critical line of MIT, which is consistent with the analytically predicted slow renormalization towards the ultimate fixed point of the MIT. The localization-length exponent nu is estimated as nu = 1.55 +/- 0.1.

引用

页数：6

共 50 条

[1] Metal-insulator transition in two-dimensional transition metal dichalcogenides
Byoung Hee Moon
[J]. Emergent Materials, 2021, 4 : 989 - 998
[2] Metal-insulator transition in two-dimensional transition metal dichalcogenides
Moon, Byoung Hee
[J]. EMERGENT MATERIALS, 2021, 4 (04) : 989 - 998
[3] Metal-insulator transition in two-dimensional system in zero magnetic field
Pudalov, VM
[J]. USPEKHI FIZICHESKIKH NAUK, 1998, 168 (02): : 227 - 231
[4] Metal-insulator transition unexpectedly appears in a two-dimensional electron system
Lubkin, GB
[J]. PHYSICS TODAY, 1997, 50 (07) : 19 - 21
[5] Functionalized graphene as a model system for the two-dimensional metal-insulator transition
Osofsky, M. S.
Hernandez, S. C.
Nath, A.
Wheeler, V. D.
Walton, S. G.
Krowne, C. M.
Gaskill, D. K.
[J]. SCIENTIFIC REPORTS, 2016, 6
[6] Quantum scaling for the metal-insulator transition in a two-dimensional electron system
Kagalovsky, V.
Kravchenko, S. V.
Nemirovsky, D.
[J]. SCIENTIFIC REPORTS, 2024, 14 (01):
[7] Functionalized graphene as a model system for the two-dimensional metal-insulator transition
M. S. Osofsky
S. C. Hernández
A. Nath
V. D. Wheeler
S. G. Walton
C. M. Krowne
D. K. Gaskill
[J]. Scientific Reports, 6
[8] Thermodynamic signature of a two-dimensional metal-insulator transition
Dultz, SC
Jiang, HW
[J]. PHYSICAL REVIEW LETTERS, 2000, 84 (20) : 4689 - 4692
[9] On the metal-insulator transition in a two-dimensional Hubbard model
Kondo, H
Moriya, T
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (08) : 2559 - 2563
[10] Metal-insulator transition in two-dimensional ando model
Markos, P.
[J]. Journal De Physique, I, 1994, 4 (04):

← 1 2 3 4 5 →