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含双T形量子结构的量子波导中声学声子输运和热导

彭小芳 陈丽群 罗勇锋 刘凌虹 王凯军

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含双T形量子结构的量子波导中声学声子输运和热导

彭小芳, 陈丽群, 罗勇锋, 刘凌虹, 王凯军

Acoustic phonon transport and thermal conductance in quantum waveguide with abrupt quantum junctions modulated with double T-shapedquantum structure

Peng Xiao-Fang, Chen Li-Qun, Luo Yong-Feng, Liu Lin-Hong, Wang Kai-Jun
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  • 采用散射矩阵方法, 研究了含双T形量子结构的量子波导中声学声子输运和热导性质. 结果表明: 在极低温度, 双T形量子结构能增强低温热导; 相反地, 在相对较高的温度范围, 双T形量子结构能降低低温热导. 而在整个低温范围内, 增加散射区域最窄处的宽度能增强低温热导. 计算结果表明可以通过调节含双T形量子结构的量子波导结构来调控声子的输运概率和热导.
    By using the scattering matrix method, the transmission coefficient and thermal conductance of acoustic phonon through a quantum waveguide with abrupt quantum junctions modulated with double T-shaped quantum structure at low temperatures are studied. The results show that at very low temperatures, the double T-shaped quantum structure can enhance low-temperature thermal conductance; contrarily, at higher temperatures, the double T-shaped quantum structure can reduce low-temperature thermal conductance. However, in the whole low-temperature region, the low-temperature thermal conductance can be enhanced by adding the narrowest width c in the scattering region. Moreover, it is found that both the transmission coefficient and thermal conductance can be adjusted by changing the structural parameters of the the scattering region.
    • 基金项目: 湖南省教育厅青年项目(批准号: 12B136)和中南林业科技大学人才引进计划 (批准号: 104-0160) 资助的课题.
    • Funds: Work supported by the Youth Foundation of Hunan Provincial Education Department of China (Grant No. 12B136), and the Talent Introducing Plan of Central South University of Forestry and Technology (Grant No. 104-0160).
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    Li W X, Chen K Q, Duan W H, Wu J, Gu B L, 2004 Appl. Phys. Lett. 85 822

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    Ming Y, Wang Z X, Li Q, Ding Z Z 2007 Appl. Phys. Lett. 91 143508

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    Tanaka Y, Yoshida F, Tamura S 2005 Phys. Rev. B 71 205308

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    Peng X F, Chen K Q, Wang Q, Zhou B S 2010 Phys. Rev. B 81 195317

    [11]

    Chen K Q, Li W X, Duan W H, Shuai Z, Gu B L 2005 Phys. Rev. B 72 045422

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    Pekka H 2009 Microsyst Technol 15 75

    [13]

    Cross M C, Lifshitz R 2001 Phys. Rev. B 64 85324

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    Chang C M, Geller M R 2005 Phys. Rev. B 71 125304

    [15]

    Tang L M, Wang L L, Chen K Q, Huang W Q, Zou B S 2006 Appl. Phys. Lett. 88 163505

    [16]

    Peng X F, He M D, Wang X J, Chen L C, Pan C L, Luo Y F 2011 Physica E 43 1065

    [17]

    Peng X F, Wang X J, Chen L Q, Chen K Q 2012 EPL 98 56001

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    Santamore D H, Cross M C 2001 Phys. Rev. Lett. 87 115502

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    Li W X, Chen K Q, Duan W H, Wu J, Gu B L 2004 J. Phys.: Condens. Matter 16 5049

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    Yang P, Sun Q F, Guo H, Hu B B 2007 Phys. Rev. B 75 235319

    [21]

    Yao L J, Wang L L 2008 Acta Phys. Sin. 57 3100 (in Chinese) [姚凌江, 王玲玲 2008 物理学报 57 3100]

    [22]

    Peng X F, Wang X J, Gong Z Q, Chen L Q 2011 Acta Phys. Sin. 60 036806 (in Chinese) [彭小芳, 王新军, 龚志强, 陈丽群 2011 物理学报 60 036806]

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    Volz S G, Chen G 1999 Appl. Phys. Lett. 75 2056

    [24]

    Li B W, Wang L, Casati G 2004 Phys. Rev. Lett. 93 184301

    [25]

    Hu B B, Yang L, Zhang Y 2006 Phys. Rev. Lett. 97 124302

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    Eckmann J P, Carlos M M 2006 Phys. Rev. Lett. 97 094301

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    Xie F, Chen K Q, Wang Y G, Zhang Y 2008 J. Appl. Phys. 103 084501

  • [1]

    Rego L G C, Kirczenow G 1998 Phys. Rev. Lett. 81 232

    [2]

    Schwab K, Henriksen E A, Norlock J M, Roukes M L 2000 Nature (London) 404 974

    [3]

    Meschke M, Guichard W, Pekola J 2006 Nature (London) 444 187

    [4]

    Ojanen T, Heikkila T T 2007 Phys. Rev. B 76 073414

    [5]

    Chiatti O, Nicholls J T, Proskuryakov Y, Lumpkin Y N, Farrer I, Ritchie D A 2006 Phys. Rev. Lett. 97 056601

    [6]

    Li W X, Chen K Q, Duan W H, Wu J, Gu B L, 2004 Appl. Phys. Lett. 85 822

    [7]

    Peng X F, Chen K Q 2010 Physica E 42 1968

    [8]

    Ming Y, Wang Z X, Li Q, Ding Z Z 2007 Appl. Phys. Lett. 91 143508

    [9]

    Tanaka Y, Yoshida F, Tamura S 2005 Phys. Rev. B 71 205308

    [10]

    Peng X F, Chen K Q, Wang Q, Zhou B S 2010 Phys. Rev. B 81 195317

    [11]

    Chen K Q, Li W X, Duan W H, Shuai Z, Gu B L 2005 Phys. Rev. B 72 045422

    [12]

    Pekka H 2009 Microsyst Technol 15 75

    [13]

    Cross M C, Lifshitz R 2001 Phys. Rev. B 64 85324

    [14]

    Chang C M, Geller M R 2005 Phys. Rev. B 71 125304

    [15]

    Tang L M, Wang L L, Chen K Q, Huang W Q, Zou B S 2006 Appl. Phys. Lett. 88 163505

    [16]

    Peng X F, He M D, Wang X J, Chen L C, Pan C L, Luo Y F 2011 Physica E 43 1065

    [17]

    Peng X F, Wang X J, Chen L Q, Chen K Q 2012 EPL 98 56001

    [18]

    Santamore D H, Cross M C 2001 Phys. Rev. Lett. 87 115502

    [19]

    Li W X, Chen K Q, Duan W H, Wu J, Gu B L 2004 J. Phys.: Condens. Matter 16 5049

    [20]

    Yang P, Sun Q F, Guo H, Hu B B 2007 Phys. Rev. B 75 235319

    [21]

    Yao L J, Wang L L 2008 Acta Phys. Sin. 57 3100 (in Chinese) [姚凌江, 王玲玲 2008 物理学报 57 3100]

    [22]

    Peng X F, Wang X J, Gong Z Q, Chen L Q 2011 Acta Phys. Sin. 60 036806 (in Chinese) [彭小芳, 王新军, 龚志强, 陈丽群 2011 物理学报 60 036806]

    [23]

    Volz S G, Chen G 1999 Appl. Phys. Lett. 75 2056

    [24]

    Li B W, Wang L, Casati G 2004 Phys. Rev. Lett. 93 184301

    [25]

    Hu B B, Yang L, Zhang Y 2006 Phys. Rev. Lett. 97 124302

    [26]

    Eckmann J P, Carlos M M 2006 Phys. Rev. Lett. 97 094301

    [27]

    Xie F, Chen K Q, Wang Y G, Zhang Y 2008 J. Appl. Phys. 103 084501

计量
  • 文章访问数:  5420
  • PDF下载量:  375
  • 被引次数: 0
出版历程
  • 收稿日期:  2012-07-13
  • 修回日期:  2012-09-28
  • 刊出日期:  2013-03-05

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