| CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
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Thermodynamic behaviour of Rashba quantum dot in the presence of magnetic field |
| Sukirti Gumber1, Manoj Kumar1, Pradip Kumar Jha2, Man Mohan1 |
1. Department of Physics & Astrophysics, University of Delhi, Delhi 110007, India;
2. Department of Physics, DDU College, University of Delhi, Delhi 110015, India |
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Abstract The thermodynamic properties of an InSb quantum dot have been investigated in the presence of Rashba spin-orbit interaction and a static magnetic field. The energy spectrum and wave-functions for the system are obtained by solving the Schrodinger wave-equation analytically. These energy levels are employed to calculate the specific heat, entropy, magnetization and susceptibility of the quantum dot system using canonical formalism. It is observed that the system is susceptible to maximum heat absorption at a particular value of magnetic field which depends on the Rashba coupling parameter as well as the temperature. The variation of specific heat shows a Schottky-like anomaly in the low temperature limit and rapidly converges to the value of 2kB with the further increase in temperature. The entropy of the quantum dot is found to be inversely proportional to the magnetic field but has a direct variation with temperature. The substantial effect of Rashba spin-orbit interaction on the magnetic properties of quantum dot is observed at low values of magnetic field and temperature.
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Received: 02 December 2015
Revised: 01 February 2016
Accepted manuscript online:
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PACS:
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65.80.-g
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(Thermal properties of small particles, nanocrystals, nanotubes, and other related systems)
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75.75.-c
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(Magnetic properties of nanostructures)
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| Fund: Project support by the University Grants Commission, India, the Department of Science and Technology, and the University Grants Commission-Basic Science Research (UGC-BSR). |
Corresponding Authors:
Sukirti Gumber
E-mail: sukirti.du@gmail.com
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Cite this article:
Sukirti Gumber, Manoj Kumar, Pradip Kumar Jha, Man Mohan Thermodynamic behaviour of Rashba quantum dot in the presence of magnetic field 2016 Chin. Phys. B 25 056502
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| [1] |
Garcia J M, Medeiros-Ribeiro G, Schmidt K, Ngo T, Feng J L, Lorke A, Kotthaus J and Petroff P M 1997 Appl. Phys. Lett. 71 2014
|
| [2] |
Sundaram M, Chalmers S A, Hopkins P F and Gossard A C 1991 Science 254 1326
|
| [3] |
Wang L, Yang D, Hao Z B and Luo Y 2015 Chin. Phys. B 24 067303
|
| [4] |
Milliron D J, Hughes S M, Cui Y, Manna L, Li J B, Wang L W and Alivisatos A P 2004 Nature 430 190
|
| [5] |
Gates B D, Xu Q, Stewart M, Ryan D, Willson C G and Whitesides G M 2005 Chem. Rev. 105 1171
|
| [6] |
Qin Z H 2013 Chin. Phys. B 22 098108
|
| [7] |
Ito T and Okazaki S 2000 Nature 406 1027
|
| [8] |
Xia Y N, Rogers J A, Paul K E and Whitesides G M 1999 Chem. Rev. 99 1823
|
| [9] |
Barth J V, Costantini G and Kern K 2005 Nature 437 671
|
| [10] |
Drexler H, Leonard D, Hansen W, Kotthaus J P and Petroff P M 1994 Phys. Rev. Lett. 73 2252
|
| [11] |
Nilsson H A, Karlstrom O, Larsson M, Caroff P, Pedersen J N, Samuelson L, Wacker A, Wernersson L E and Xu H Q 2010 Phys. Rev. Lett. 104 186804
|
| [12] |
Brunhes T, Boucaud P and Sauvage S 2000 Phys. Rev. B 61 5562
|
| [13] |
Motyka M, Kudrawiec R, Misiewicz J, Hümmer M, Röbner K, Lehnhardt T, Müller M and Forchel A 2008 J. Appl. Phys. 103 113514
|
| [14] |
Huynh W U, Dittmer J J and Alivisatos A P 2002 Science 295 2425
|
| [15] |
Kazes M, Lewis D Y, Ebenstein Y, Mokari T and Banin U 2002 Adv. Mater. 14 317
|
| [16] |
Badawi A 2015 Chin. Phys. B 24 047205
|
| [17] |
Gudiksen M S, Lauhon L J, Wang J, Smith D C and Lieber C M 2002 Nature 415 617
|
| [18] |
Thelander C, Mårtensson T, Björk M T, Ohlsson B J, Larsson M W, Wallenberg L R and Samuelson L 2003 Appl. Phys. Lett. 83 2052
|
| [19] |
Bratschitsch R and Leitenstorfer A 2006 Nat. Mater. 5 855
|
| [20] |
Voskoboynikov O, Lee C P and Tretyak O 2001 Phys. Rev. B 63 165306
|
| [21] |
Governale M 2002 Phys. Rev. Lett. 89 206802
|
| [22] |
Bulaev D V and Loss D 2005 Phys. Rev. B 71 205324
|
| [23] |
Rashba E I 1960 Fiz. Tverd. Tela (Leningrad) 2 1224
|
| [24] |
Rashba E I 1960 Sov. Phys. Solid State 2 1109
|
| [25] |
Moroz A V and Barnes C H W 2000 Phys. Rev. B 61 R2464
|
| [26] |
Destefani C F, Ulloa S E and Marques G E 2004 Phys. Rev. B 69 125302
|
| [27] |
Bagga A, Pietiläinen P and Chakraborty T 2006 Phys. Rev B 74 033313
|
| [28] |
Bai X F, Sun L L and Chi F 2015 Chin. Phys. B 24 057302
|
| [29] |
Jha P K, Kumar M, Lahon S, Gumber S and Mohan M 2013 Superlatt. Microstruct. 57 11
|
| [30] |
Gornik E, Lassnig R, Strasser G, Störmer H L, Gossard A C and Wiegmann W 1985 Phys. Rev. Lett. 54 1820
|
| [31] |
De Groote J J S, Hornos J and Chaplik A 1994 Phys. Rev. B 46 15397
|
| [32] |
Neeleshwar S, Chen C L, Tsai C B and Chen Y Y 2005 Phys. Rev. B 71 201307
|
| [33] |
Diaz-Sanchez L E, Romero A H, Cardona M, Kremer R K and Gonze X 2007 Phys. Rev. Lett. 99 165504
|
| [34] |
Liao Y Y 2014 Phys. Rev. A 89 022510
|
| [35] |
Climente J I, Planelles J and Movilla J L 2004 Phys. Rev. B 70 081301
|
| [36] |
Boyacioglu B and Chatterjee A 2012 J. Appl. Phys. 112 083514
|
| [37] |
Voskoboynikov O, Bauga O, Lee C P and Tretyak O 2003 J. Appl. Phys. 94 5891
|
| [38] |
Darwin C G 1931 Proc. Cambridge Philos. Soc. 27 86
|
| [39] |
De Andrada e Silva E A, La Rocca G C and Bassani F 1997 Phys. Rev. B 55 16293
|
| [40] |
Datta S and Das B 1990 Appl. Phys. Lett. 56 665
|
| [41] |
Kane B E 1998 Nature 393 133
|
| [42] |
Stano P and Fabian J 2005 Phys. Rev. B 72 155410
|
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