Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/17104
標題: Nonlinearity of microwave-induced photovoltage and photocurrent of two-dimensional electron systems and mesoscopic structures.
在二維電子系統及介觀結構的微波感應光電壓及光電流之非線性探討
作者: 張哲瑋
Chang, Che-Wei
關鍵字: 2DES
微波感應
High-frequency
高頻
出版社: 物理學系所
引用: [1] D. K. Cheng “Field and Wave Electromagnetics” 2nd Edition, Addison-Wesley Publishing Company, Inc. (1989) [2] V. I. Fal'ko, Europhys. Lett. 8(8), 785 (1989) [3] V. I. Fal'ko, and D. E. Khmel'nitskii, Zh. Eksp. Teor. Fiz. 95, 328(1989) [Sov. Phys. JETP 68, 186 (1989)] [4] J. Liu, M. A. Pennington, and N. Giordano, Phys. Rev. B 45, 1267 (1992) [5] J. J. Lin, R. E. Bartolo, and N. Giordano, Phys. Rev. B 45, 14231 (1992) [6] L. DiCarlo, C. M. Marcus, and J. S. Harris, Phys. Rev. Lett. 91 246804 (2003) [7] K. von Klitzing, G. Dorda, and M. Pepper, Phys. Rev. Lett. 45, 494 (1980). [8] M. A. Zudov, R. R. Du, J. A. Simmons, and J. L. Reno, Phys. Rev. B 64, 201311 (2001). [9] C. Kittel “Introduction to Solid State Physics” Eighth Edition, John Wiely, and Sons, Inc. (2005) [10] A. N. Khondker, and Muhammad A. Alam, Phys. Rev. B 44, 5444 (1991) [11] R. E. Bartolo, N. Giordano, X. Huang, and G. H. Bernstein, Phys. Rev. B 55, 2384 (1997) [12] L. Angers, A. Chepelianskii, R. Deblock, B. Reulet, and H. Bouchiat, Phys. Rev. B 76, 075331(2007) [13] I. Kasalynas, and L. Subacius, Appl. Phys. Lett. 89, 152104(2006) [14] U. Sivan, P. M. Solomon, and H. Shrikman, Phys. Rev. Lett. 68, 1196(1992) [15] C. Skierbiszewski, K. Dybko, W. Knap, M. Siekacz, W. Krupczynski, G. Nowak, and M. Bockowski, Appl. Phys. Lett. 86, 102106(2005) [16] J. A. Keogh, K. Das Gupta, H. E. Beere, D. A. Ritchie, and M. Pepper, Appl. Phys. Lett. 87, 202104(2005) [17] A. M. M. Omer, S. Adhikari, S. Adhikary, H. Uchida, and M. Umeno, Appl. Phys. Lett. 87, 161912(2005) [18] M. Moskalets, and M. Buttiker, Phys. Rev. B 69, 205316(2004) [19] Y. Q. Tang, B. Shen, X. W. He, K. Han, N. Tang, W. H. Chen, Z. J. Yang, G. Y. Zhang, Y. H. Chen, C. G. Tang, Z. G. Wang, K. S. Cho, and Y. F. Chen, Appl. Phys. Lett. 91, 071920(2007) [20] F. Pierre, A. B. Gougam, A. Anthore, H. Pothier, D. Esteve, and N. O. Birge, Phys. Rev. B 68, 085413(2003) [21] E. Tutuc, M. Shayegan, and D. A. Huse, Phys. Rev. Lett. 93, 036802(2004) [22] M. G. Vavilov, and A. D. Stone, Phys. Rev. Lett. 97, 216801(2006) [23] R. E. Bartolo, and N. Giordano, Phys. Rev. Lett. 54, 3571(1996) [24] L. Angers, E. Z. Bajjani, R. Deblock, S. Gueron, H. Bouchiat, A. Cavanna, and U. Gennser, Phys. Rev. B 75, 115309(2007) [25] M. G. Vavilov, V. Ambegaokar and I. L. Aleiner, Phys. Rev. B 63, 195313(2001)
摘要: 我們在調變參雜GaAs/AlGaAs異質結構的二維電子系統上製作了寬度分別為50 μm、1 μm、5 μm的窄通道,在高頻微波照射下,產生一交流電場Eac作用於元件上,測量接點間的感應光電壓( VP )及光電流( IP )。在本實驗中,我們觀察不同寬度的窄通道在溫度1.4 K和4 K,及不同的磁場下,改變頻率( 500 MHz ~ 15 GHz )及微波強度( -39 ~ 10 dBm ),比較感應光電壓及光電流傳輸特性。在磁場B = 0 T下,隨著微波強度增強( -19 ~ 10 dBm )觀察到感應光電壓及光電流以非線性方式增減的現象,且在不同位置的微波天線下都有此現象。在較微弱的微波強度( -27 dBm )以下,與理論IP正比於Eac2相符合,並且在 ±3 ( Tesla )下分析反對稱與對稱性的現象,可以看出對稱性現象是由磁場的改變所造成的電阻變化為主要因素,而影響反對稱性現象則更為複雜。
In this work, we investigate microwave-induced current and voltage of mesoscopic two-dimensional electron systems embedded in the GaAs/AlGaAs heterostructure under various magnetic fields (B). The width of the mesoscopic channels are 50 μm、1 μm、5 μm. The frequency (f) range of the microwave is 500 MHz ~ 15 GHz with power –39 dBm ~10dBm. In the high power range (> -19 dBm), the behavior of the photocurrent (IP) and the photovoltage (VP) are very nonlinear at B = 0. However, we find that IP is proportional to the square of the ac electric field (Eac) in the low amplitude range (< -27 dBm). We also find that VP and IP have maximum at f = 4 GHz. By analyzing the magnetic-field-dependent data between -3 and 3 T, we can conclude that the field-symmetric part of the photocurrent is due to the variation of resistance caused by the change of the magnetic field.
URI: http://hdl.handle.net/11455/17104
其他識別: U0005-2308200802154300
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-2308200802154300
Appears in Collections:物理學系所

文件中的檔案:

取得全文請前往華藝線上圖書館



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.