Extended Drude Model Analysis of the Optical Spectra of Correlated Electron Systems in a d-Wave Superconducting State

다국어 초록 (Multilingual Abstract)

Correlation information in strongly correlated electron systems can be obtained using an extended Drude model. An interesting method related to the extended Drude model analysis of superconducting optical data was proposed recently. This method aims to extract the optical self-energy of quasiparticles (or residual unpaired electrons) from measured optical data in the superconducting state.
However, this new optical self-energy is part of the (full) optical self-energy. The interpretation and the significance of this new optical self-energy is unclear. We investigate the proposed method by using a reverse process with simple electron-boson spectral density functions. With our obtained results, we conclude that the new optical self-energy is difficult to interpret because it provides an unphysical feature, which is a negative (optical) effective mass. The present study clarifies the extended Drude analysis method for superconducting optical data of correlated electron systems.

참고문헌 (Reference)

1 P. D. Johnson, 87 : 177007-, 2001

2 J. F. Zasadzinski, 96 : 017004-, 2006

3 W. Zhang, 100 : 107002-, 2008

4 D. Bonn, 47 : 11314-, 1993

5 J. Hwang, 25 : 295701-, 2013

6 W. Gotze, 6 : 1226-, 1972

7 J. Hwang, 427 : 714-, 2004

8 J. P. Carbotte, 71 : 054506-, 2005

9 J. Hwang, 98 : 207002-, 2007

10 G. Kotliar, 57 : 53-, 2004

11 B. C. Webb, 57 : 1951-, 1986

12 P. E. Sulewski, 38 : 5338-, 1988

13 G. A. Thomas, 61 : 1313-, 1988

14 A. M. Awasthi, 48 : 10692-, 1993

15 A. V. Puchkov, 8 : 10049-, 1996

16 J. P. Carbotte, 401 : 354-, 1999

17 S. V. Dordevic, 86 : 684-, 2001

18 P. Tran, 65 : 205102-, 2002

19 S. V. Dordevic, 71 : 104529-, 2005

20 E. van Heumen, 79 : 184512-, 2009

21 J. Hwang, 28 : 125702-, 2016

22 R. T. Collins, 39 : 6571-, 1989

23 J. P. Carbotte, 62 : 1027-, 1990

24 E. Schachinger, 62 : 9054-, 2000

25 J. Hwang, 73 : 014508-, 2006

26 J. Hwang, 75 : 144508-, 2007

27 E. Schachinger, 73 : 184507-, 2006

28 J. Hwang, 27 : 085701-, 2015

29 S. V. Dordevic, 90 : 174508-, 2014

30 J. P. Carbotte, 74 : 066501-, 2011

31 J. Hwang, 6 : 23647-, 2016

32 J. Hwang, 30 : 405604-, 2018

33 P. B. Allen, 3 : 305-, 1971

34 J. Hwang, 20 : 295215-, 2008

35 T. Valla, 98 : 167003-, 2007

36 C. Stock, 69 : 014502-, 2004

37 R. E. Glover, 104 : 844-, 1956

38 R. A. Ferrell, 109 : 1398-, 1958

39 J. Hwang, 19 : 125208-, 2007

40 A. J. Millis, 42 : 167-, 1990

41 D. N. Basov, 77 : 721-, 2005

42 J. Rossat-Mignod, 185-189 : 86-, 1991

43 P. Dai, 284 : 1344-, 1999

44 H. F. Fong, 61 : 14773-, 2000

45 F. Wooten, "Optical Properties of Solids" Academic 1972

46 H. M. Nussenzveig, "Causality and Dispersion Relations Vol. 95" Accademic Press 30-, 1972