Abstract
The length λ0 at which the lateral electric-field component E ⊥ perpendicular to the boundary is conserved near the boundary of two-dimensional (2D) samples, which is covered by 2D electrons, has been determined. The existence of the finite such length follows from the self-consistent process of the screening of the external fields forming the boundaries of real 2D systems by the electrons of the metal. The effect of E ⊥ on the structure of magnetic edge states has been taken into account in the mean field approximation in a wide range of the external field from the semiclassical limit (ɛF ≫ ħωc), where ɛF is the Fermi energy of the 2D system and ħωc is the cyclotron energy to the quantum Hall effect (QHE) region (ɛF ≪ ħωc). The positions of the magnetic edge state peaks against the background of their ideal distribution along the perimeter of the 2D circle in the known problem of transverse magnetic focusing have been determined in the semiclassical limit. The systematic description of the structure of the skin layer with λ H ≥ λ0, consisting of the set of the so-called integer strips (overlapping or independent), which are carriers of the universal quantum conductance, has been proposed in the QHE regime. A relatively large probability of the overlapping of the fields of adjacent strips, as well as the possibility of describing coupled integer cascades, is remarkable. The existing data on the tunneling current through integer strips in the λ H layer providing suitable information on the actual state of the boundary of the 2D system have been commented. A natural analogy between the properties of magnetic edge states and a well-known problem of the details of the ballistic conductance σ‖(H) of narrow electron channels in the magnetic field H has been noticed. The formalisms of both problems are identical under the conditions λ H ≥ w, where 2w is the effective width of the quasi-one-dimensional channel. The existing information on the σ‖(H) dependence in a wide range of the magnetic field has been systematized. The attributes of the QHE observed in σ‖(H) convincingly indicate the reality of the formation of various modifications of integer strips in inhomogeneous 2D systems in the quantizing magnetic field.
Similar content being viewed by others
References
I. M. Lifshitz and A. M. Kosevich, Sov. Phys. JETP 2, 646 (1955).
M. S. Khaikin, Sov. Phys. JETP 12, 152 (1960).
R. Prange and T. Nee, Phys. Rev. 168, 779 (1968).
V. Tsoi, J. Bass, and P. Wyder, Rev. Mod. Phys. 71, 1641 (1999).
M. Kaplit and J. Zemel, Phys. Rev. Lett. 21, 212 (1968).
S. Takaoka, K. Oto, H. Kurimoto, K. Murase, K. Gamo, and S. Nishi, Phys. Rev. Lett. 72, 3080 (1994).
B. Halperin, Phys. Rev. B: Condens. Matter 25, 2185 (1982).
M. Büttiker, Phys. Rev. B: Condens. Matter 38, 9375 (1988); IBM J. Res. Dev. 32, 317 (1988).
K. von Klitzing, Physica B (Amsterdam) 184, 1 (1993).
R. Haug, Semicond. Sci. Technol. 8, 131 (1993).
X. Wen, Phys. Rev. Lett. 64, 2206 (1990); Phys. Rev. B: Condens. Matter 43, 11025 (1991); Phys. Rev. B: Condens. Matter 44, 5708 (1991).
C. de C. Chamon and X. G. Wen, Phys. Rev. B: Condens. Matter 49, 8227 (1994).
M. Grayson, D. C. Tsui, L. N. Pfeiffer, K. W. West, and A. M. Chang, Phys. Rev. Lett. 80, 1062 (1998).
M. Hilke, D. C. Tsui, M. Grayson, L. N. Pfeiffer, and K. W. West, Phys. Rev. Lett. 87, 186806 (2001).
E. Deviatov, A. A. Kapustin, V. T. Dolgopolov, A. Lorke, D. Reuter, and A. D. Wieck, Phys. Rev. B: Condens. Matter 74, 073303 (2006).
E. Andrei, Phys. Rev. Lett. 52, 1449 (1984).
Yu. Monarkha, U. Albrecht, K. Kono, and P. Leiderer, Phys. Rev. B: Condens. Matter 47, 13812 (1993).
P. Leiderer, S. Nazin, and V. Shikin, Low Temp. Phys. 34(4), 392 (2008).
D. Chklovskii, B. Shklovskii, and L. Glazman, Phys. Rev. B: Condens. Matter 46, 4026 (1992).
D. Chklovskii, K. Matveev, and B. Shklovskii, Phys. Rev. B: Condens. Matter 47, 12605 (1993).
E. A. Kaner, N. M. Makarov, and I. M. Fuks, Sov. Phys. JETP 28, 483 (1968).
L. A. Fal’kovskii, Sov. Phys. JETP 31, 981 (1970).
G. B. Volovik, JETP Lett. 55, 368 (1992).
M. Z. Hasan and C. L. Kane, Rev. Mod. Phys. 82, 3045 (2010).
I. M. Lifshitz, M. Ya. Azbel, and M. I. Kaganov, Electron Theory of Metals (Nauka, Moscow, 1971; Consultants Bureau, New York, 1973); M. Ya. Azbel’, JETP Lett. 5, 230 (1967).
L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 5: Statistical Physics: Part 1 (Nauka, Moscow, 1995; Butterworth-Heinemann, Oxford, 1996).
K. Berggren and D. Newson, Semicond. Sci. Technol. 1, 327 (1986).
T. Demel, D. Heitman, P. Grambow, and K. Ploog, Phys. Rev. B: Condens. Matter 38, 12732 (1998).
S. Laux, D. Frank, and F. Stern, Surf. Sci. 196, 101 (1988).
V. B. Shikin, Sov. Phys. JETP 74, 852 (1991).
J. Eisenstein, L. Pfeifer, and K. West, Phys. Rev. B: Condens. Matter 50, 1760 (1994).
L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 8: Electrodynamics of Continuous Media (Nauka, Moscow, 1982; Butterworth-Heinemann, Oxford, 1984).
W. Dietsche, K. von Klitzing, K. Ploog, and K. Eberl, Semicond. Sci. Technol. 10, 117 (1995); W. Dietsche, K. von Klitzing, and K. Ploog, Surf. Sci. 361, 117 (1996).
V. Shikin, Phys. Rev. B: Condens. Matter 64, 245335 (2001).
Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 2: The Classical Theory of Fields (Nauka, Moscow, 1973; Butterworth-Heinemann, Oxford, 1980).
V. Fock, Z. Phys. 47, 446 (1928).
K. Berggren, T. Thornton, D. Newson, and M. Pepper, Phys. Rev. Lett. 57, 1769 (1986).
T. Thornton, M. Pepper, H. Ahmed, D. Andrews, and G. J. Davies, Phys. Rev. Lett. 56, 1198 (1986).
B. J. van Wees, L. P. Kouwenhoven, H. van Houten, C.W. J. Beenakker, J. E. Mooij, C. T. Foxon, and J. J. Harris, Phys. Rev. B: Condens. Matter 38, 3625 (1988).
H. Linke, L. Christensson, P. Omling, and P. E. Lindelof, Phys. Rev. B: Condens. Matter 56, 1440 (1997).
P. Boggild, A. Kristensen, H. Bruus, S. M. Reimann, and P. E. Lindelof, Phys. Rev. B: Condens. Matter 57, 15408 (1998).
M. Yu. Mel’nikov, V. T. Dolgopolov, V. S. Khrapai, and D. Shukh, JETP Lett. 88, 36 (2008).
S. Iordansky, Solid State Commun. 43, 1 (1982).
A. MacDonald, T. Rice, and W. Brinkman, Phys. Rev. B: Condens. Matter 28, 3648 (1983).
I. V. Kukushkin, S. V. Meshkov, and V. B. Timofeev, Sov. Phys. Usp. 31, 511 (1988).
M. Fogler, Phys. Rev. B: Condens. Matter 69, 245321 (2004).
V. B. Shikin, JETP Lett. 84, 27 (2006).
I. Larkin and V. Shikin, Phys. Lett. A 151, 1406 (1990).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.B. Shikin, S.S. Nazin, 2011, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2011, Vol. 140, No. 2, pp. 350–367.
Rights and permissions
About this article
Cite this article
Shikin, V.B., Nazin, S.S. Screening and edge states in two-dimensional metals in a magnetic field. J. Exp. Theor. Phys. 113, 306–321 (2011). https://doi.org/10.1134/S1063776111060203
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063776111060203