Variational calculation of the depolarization of the maximum density droplet in two-dimensional quantum dots

Citation:
Geist, W, Chou MY.  2007.  Variational calculation of the depolarization of the maximum density droplet in two-dimensional quantum dots, Dec. Physical Review B. 76:7., Number 23

Abstract:

We show that, if a variational parameter in the Fock-Darwin states is optimized, the lowest Landau level (LLL) approximation agrees well with configuration interaction results using several Landau levels for a wide range of confining and Coulomb interaction strengths. Within the optimized LLL approximation, we study several phase transitions beyond the maximum density droplet for four to nine electrons and find similar patterns in the phase-space diagrams for angular momenta up to N(N+1)/2. Calculations for larger angular momentum reveal unpolarized phases for filling factors up to nu=1/3.

Notes:

ISI Document Delivery No.: 246DATimes Cited: 0Cited Reference Count: 46Cited References: Tavernier MB, 2006, PHYS REV B, V74, DOI 10.1103/PhysRevB.74.125305 Guclu AD, 2005, PHYS REV B, V72 Jeon GS, 2004, PHYS REV B, V69, DOI 10.1103/PhysRevB.69.241304 Szafran B, 2004, PHYS REV B, V69, DOI 10.1103/PhysRevB.69.125344 Yannouleas C, 2004, PHYS REV B, V69, DOI 10.1103/PhysRevB.69.113306 Wensauer A, 2004, SOLID STATE COMMUN, V130, P115, DOI 10.1016/j.ssc.2003.12.039 Tavernier MB, 2003, PHYS REV B, V68, DOI 10.1103/PhysRevB.68.205305 Yannouleas C, 2003, PHYS REV B, V68, DOI 10.1103/PhysRevB.68.035326 Szafran B, 2003, PHYS REV B, V67, DOI 10.1103/PhysRevB.67.045311 Wensauer A, 2003, PHYS REV B, V67, DOI 10.1103/PhysRevB.67.035325 Colletti L, 2002, EUR PHYS J B, V27, P385, DOI 10.1140/epjb/e2002-00169-x Siljamaki S, 2002, PHYS REV B, V65, DOI 10.1103/PhysRevB.65.121306 Tsiper EV, 2002, J MATH PHYS, V43, P1664, DOI 10.1063/1.1446244 Vdovin EE, 2000, SCIENCE, V290, P122, DOI 10.1126/science.290.5489.122 Pederiva F, 2000, PHYS REV B, V62, P8120, DOI 10.1103/PhysRevB.62.8120 Yannouleas C, 2000, PHYS REV B, V61, P15895, DOI 10.1103/PhysRevB.61.15895 Austing DG, 1999, PHYS REV B, V60, P11514, DOI 10.1103/PhysRevB.60.11514 Egger R, 1999, PHYS REV LETT, V82, P3320, DOI 10.1103/PhysRevLett.82.3320 Oosterkamp TH, 1999, PHYS REV LETT, V82, P2931, DOI 10.1103/PhysRevLett.82.2931 Sasaki S, 1998, PHYSICA B, V256, P157, DOI 10.1016/S0921-4526(98)00486-4 Oosterkamp TH, 1998, NATURE, V395, P873, DOI 10.1038/27617 Harju A, 1998, EUROPHYS LETT, V41, P407, DOI 10.1209/epl/i1998-00165-4 Tarucha S, 1997, JPN J APPL PHYS 1, V36, P3917, DOI 10.1143/JJAP.36.3917 Tarucha S, 1996, PHYS REV LETT, V77, P3613, DOI 10.1103/PhysRevLett.77.3613 Filippi C, 1996, J CHEM PHYS, V105, P213, DOI 10.1063/1.471865 Klein O, 1996, PHYS REV B, V53, pR4221 Ashoori RC, 1996, NATURE, V379, P413, DOI 10.1038/379413a0 OAKNIN JH, 1995, PHYS REV LETT, V74, P5120, DOI 10.1103/PhysRevLett.74.5120 KLEIN O, 1995, PHYS REV LETT, V74, P785, DOI 10.1103/PhysRevLett.74.785 FERCONI M, 1994, PHYS REV B, V50, P14722, DOI 10.1103/PhysRevB.50.14722 EVANS AK, 1993, PHYS REV B, V48, P11120, DOI 10.1103/PhysRevB.48.11120 ASHOORI RC, 1993, PHYS REV LETT, V71, P613, DOI 10.1103/PhysRevLett.71.613 KASTNER MA, 1993, PHYS TODAY, V46, P24, DOI 10.1063/1.881393 MCDONALD AH, 1993, AUST J PHYS, V46, P345 KASTNER MA, 1992, REV MOD PHYS, V64, P849, DOI 10.1103/RevModPhys.64.849 ASHOORI RC, 1992, PHYS REV LETT, V68, P3088, DOI 10.1103/PhysRevLett.68.3088 WAGNER M, 1992, PHYS REV B, V45, P1951, DOI 10.1103/PhysRevB.45.1951 ASHOORI RC, 1992, P INT S NAN MES SYST MEIRAV U, 1990, PHYS REV LETT, V65, P771, DOI 10.1103/PhysRevLett.65.771 MAKSYM PA, 1990, PHYS REV LETT, V65, P108, DOI 10.1103/PhysRevLett.65.108 UMRIGAR CJ, 1988, PHYS REV LETT, V60, P1719, DOI 10.1103/PhysRevLett.60.1719 GIRVIN SM, 1983, PHYS REV B, V28, P4506, DOI 10.1103/PhysRevB.28.4506 LAUGHLIN RB, 1983, PHYS REV LETT, V50, P1395, DOI 10.1103/PhysRevLett.50.1395 GEIST W, UNPUB GHOSAL A, ARXIVCONDMAT0702666 ZENG L, UNPUBGeist, W. Chou, M. Y.AMER PHYSICAL SOCCOLLEGE PK

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