SCOPUS 정보 검색 플랫폼

Physical Review B - Condensed Matter and Materials Physics

Volumn 81, Issue 15, 2010, Pages

Scanning tunneling spectroscopy of a dilute two-dimensional electron system exhibiting Rashba spin splitting

(5) Becker, S a Liebmann, M a Mashoff, T a Pratzer, M a Morgenstern, M a

a RWTH AACHEN UNIVERSITY (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 77955355162 PISSN: 10980121 EISSN: 1550235X Source Type: Journal
DOI: 10.1103/PhysRevB.81.155308 Document Type: Article

Times cited : (30)

References (53)

1
- 1942449168
- 10.1063/1.102730
- S. Datta and B. Das, Appl. Phys. Lett. 56, 665 (1990). 10.1063/1.102730
- (1990) Appl. Phys. Lett. , vol.56 , pp. 665
- Datta, S.¹ Das, B.²

2
- 0035900398
- Spintronics: A spin-based electronics vision for the future
- DOI 10.1126/science.1065389
- S. A. Wolf, D. D. Awschalom, R. A. Buhrman, J. M. Daughton, S. von Molnar, M. L. Roukes, A. Y. Chtchelkanova, and D. M. Treger, Science 294, 1488 (2001). 10.1126/science.1065389 (Pubitemid 33063913)
- (2001) Science , vol.294 , Issue.5546 , pp. 1488-1495
- Wolf, S.A.¹ Awschalom, D.D.² Buhrman, R.A.³ Daughton, J.M.⁴ Von Molnar, S.⁵ Roukes, M.L.⁶ Chtchelkanova, A.Y.⁷ Treger, D.M.⁸

3
- 2942610744
- Spintronics: Fundamentals and applications
- DOI 10.1103/RevModPhys.76.323
- I. Áutić, J. Fabian, and S. Das Sarma, Rev. Mod. Phys. 76, 323 (2004). 10.1103/RevModPhys.76.323 (Pubitemid 39063520)
- (2004) Reviews of Modern Physics , vol.76 , Issue.2 , pp. 323-410
- Zutic, I.¹ Fabian, J.² Sarma, S.D.³

4
- 0000696553
- E. I. Rashba, Sov. Phys. Solid State 2, 1109 (1960).
- (1960) Sov. Phys. Solid State , vol.2 , pp. 1109
- Rashba, E.I.¹

5
- 0012396897
- 10.1088/0022-3719/17/33/015
- Y. A. Bychkov and E. I. Rashba, J. Phys. C 17, 6039 (1984). 10.1088/0022-3719/17/33/015
- (1984) J. Phys. C , vol.17 , pp. 6039
- Bychkov, Y.A.¹ Rashba, E.I.²

6
- 1542406893
- 10.1103/PhysRevLett.78.1335
- J. Nitta, T. Akazaki, H. Takayanagi, and T. Enoki, Phys. Rev. Lett. 78, 1335 (1997). 10.1103/PhysRevLett.78.1335
- (1997) Phys. Rev. Lett. , vol.78 , pp. 1335
- Nitta, J.¹ Akazaki, T.² Takayanagi, H.³ Enoki, T.⁴

7
- 0001063525
- 10.1103/PhysRevB.55.R1958
- G. Engels, J. Lange, T. Schäpers, and H. Lüth, Phys. Rev. B 55, R1958 (1997). 10.1103/PhysRevB.55.R1958
- (1997) Phys. Rev. B , vol.55 , pp. 1958
- Engels, G.¹ Lange, J.² Schäpers, T.³ Lüth, H.⁴

8
- 0343826150
- 10.1103/PhysRevLett.84.6074
- D. Grundler, Phys. Rev. Lett. 84, 6074 (2000). 10.1103/PhysRevLett.84. 6074
- (2000) Phys. Rev. Lett. , vol.84 , pp. 6074
- Grundler, D.¹

9
- 0037458419
- 10.1103/PhysRevLett.90.076807
- J. B. Miller, D. M. Zumbuhl, C. M. Marcus, Y. B. Lyanda-Geller, D. Goldhaber-Gordon, K. Campman, and A. C. Gossard, Phys. Rev. Lett. 90, 076807 (2003). 10.1103/PhysRevLett.90.076807
- (2003) Phys. Rev. Lett. , vol.90 , pp. 076807
- Miller, J.B.¹ Zumbuhl, D.M.² Marcus, C.M.³ Lyanda-Geller, Y.B.⁴ Goldhaber-Gordon, D.⁵ Campman, K.⁶ Gossard, A.C.⁷

10
- 33646346821
- 10.1103/PhysRevLett.89.046801
- T. Koga, J. Nitta, T. Akazaki, and H. Takayanagi, Phys. Rev. Lett. 89, 046801 (2002). 10.1103/PhysRevLett.89.046801
- (2002) Phys. Rev. Lett. , vol.89 , pp. 046801
- Koga, T.¹ Nitta, J.² Akazaki, T.³ Takayanagi, H.⁴

11
- 0030262850
- 10.1103/PhysRevLett.77.3419
- S. LaShell, B. A. McDougall, and E. Jensen, Phys. Rev. Lett. 77, 3419 (1996). 10.1103/PhysRevLett.77.3419
- (1996) Phys. Rev. Lett. , vol.77 , pp. 3419
- Lashell, S.¹ McDougall, B.A.² Jensen, E.³

12
- 37649027247
- 10.1103/PhysRevB.69.241401
- M. Hoesch, M. Muntwiler, V. N. Petrov, M. Hengsberger, L. Patthey, M. Shi, M. Falub, T. Greber, and J. Osterwalder, Phys. Rev. B 69, 241401 (R) (2004). 10.1103/PhysRevB.69.241401
- (2004) Phys. Rev. B , vol.69 , pp. 241401
- Hoesch, M.¹ Muntwiler, M.² Petrov, V.N.³ Hengsberger, M.⁴ Patthey, L.⁵ Shi, M.⁶ Falub, M.⁷ Greber, T.⁸ Osterwalder, J.⁹

13
- 34247863694
- Giant spin splitting through surface alloying
- DOI 10.1103/PhysRevLett.98.186807
- C. R. Ast, J. Henk, A. Ernst, L. Moreschini, M. C. Falub, D. Pacile, P. Bruno, K. Kern, and M. Grioni, Phys. Rev. Lett. 98, 186807 (2007). 10.1103/PhysRevLett.98.186807 (Pubitemid 46701737)
- (2007) Physical Review Letters , vol.98 , Issue.18 , pp. 186807
- Ast, C.R.¹ Henk, J.² Ernst, A.³ Moreschini, L.⁴ Falub, M.C.⁵ Pacile, D.⁶ Bruno, P.⁷ Kern, K.⁸ Grioni, M.⁹

14
- 40849102661
- Rashba effect in the graphene/Ni(111) system
- DOI 10.1103/PhysRevLett.100.107602
- Y. S. Dedkov, M. Fonin, U. Rüdiger, and C. Laubschat, Phys. Rev. Lett. 100, 107602 (2008). 10.1103/PhysRevLett.100.107602 (Pubitemid 351399114)
- (2008) Physical Review Letters , vol.100 , Issue.10 , pp. 107602
- Dedkov, Yu.S.¹ Fonin, M.² Rudiger, U.³ Laubschat, C.⁴

15
- 34247872882
- 10.1103/PhysRevB.75.201401
- C. R. Ast, G. Wittich, P. Wahl, R. Vogelgesang, D. Pacile, M. C. Falub, L. Moreschini, M. Papagno, M. Grioni, and K. Kern, Phys. Rev. B 75, 201401 (R) (2007). 10.1103/PhysRevB.75.201401
- (2007) Phys. Rev. B , vol.75 , pp. 201401
- Ast, C.R.¹ Wittich, G.² Wahl, P.³ Vogelgesang, R.⁴ Pacile, D.⁵ Falub, M.C.⁶ Moreschini, L.⁷ Papagno, M.⁸ Grioni, M.⁹ Kern, K.¹⁰

16
- 20844444738
- 10.1103/PhysRevLett.93.196802
- J. I. Pascual, G. Bihlmayer, Y. M. Koroteev, H. P. Rust, G. Ceballos, M. Hansmann, K. Horn, E. V. Chulkov, S. Blügel, P. M. Echenique, and P. Hofmann, Phys. Rev. Lett. 93, 196802 (2004). 10.1103/PhysRevLett.93.196802
- (2004) Phys. Rev. Lett. , vol.93 , pp. 196802
- Pascual, J.I.¹ Bihlmayer, G.² Koroteev, Y.M.³ Rust, H.P.⁴ Ceballos, G.⁵ Hansmann, M.⁶ Horn, K.⁷ Chulkov, E.V.⁸ Blügel, S.⁹ Echenique, P.M.¹⁰ Hofmann, P.¹¹

17
- 17144458119
- 10.1016/S0039-6028(00)00441-6
- L. Petersen and P. Hedegard, Surf. Sci. 459, 49 (2000). 10.1016/S0039-6028(00)00441-6
- (2000) Surf. Sci. , vol.459 , pp. 49
- Petersen, L.¹ Hedegard, P.²

18
- 36849019646
- Spin - Orbit coupling induced interference in quantum corrals
- DOI 10.1021/nl071711z
- J. E. D. Walls and E. J. Heller, Nano Lett. 7, 3377 (2007). 10.1021/nl071711z (Pubitemid 350218107)
- (2007) Nano Letters , vol.7 , Issue.11 , pp. 3377-3382
- Walls, J.D.¹ Heller, E.J.²

19
- 84957312198
- 10.1209/0295-5075/26/5/007
- V. Y. Aristov, G. LeLay, P. Soukiassian, K. Hricovini, J. E. Bonnet, J. Osvald, and O. Olsson, Europhys. Lett. 26, 359 (1994). 10.1209/0295-5075/26/5/ 007
- (1994) Europhys. Lett. , vol.26 , pp. 359
- Aristov, V.Y.¹ Lelay, G.² Soukiassian, P.³ Hricovini, K.⁴ Bonnet, J.E.⁵ Osvald, J.⁶ Olsson, O.⁷

20
- 0000019391
- 10.1103/PhysRevB.61.13805
- M. Morgenstern, M. Getzlaff, D. Haude, R. Wiesendanger, and R. L. Johnson, Phys. Rev. B 61, 13805 (2000). 10.1103/PhysRevB.61.13805
- (2000) Phys. Rev. B , vol.61 , pp. 13805
- Morgenstern, M.¹ Getzlaff, M.² Haude, D.³ Wiesendanger, R.⁴ Johnson, R.L.⁵

21
- 0034883893
- 10.1103/PhysRevB.63.205305
- M. Getzlaff, M. Morgenstern, C. Meyer, R. Brochier, R. L. Johnson, and R. Wiesendanger, Phys. Rev. B 63, 205305 (2001). 10.1103/PhysRevB.63.205305
- (2001) Phys. Rev. B , vol.63 , pp. 205305
- Getzlaff, M.¹ Morgenstern, M.² Meyer, C.³ Brochier, R.⁴ Johnson, R.L.⁵ Wiesendanger, R.⁶

22
- 0034894921
- 10.1103/PhysRevB.63.155315
- M. G. Betti, V. Corradini, G. Bertoni, P. Casarini, C. Mariani, and A. Abramo, Phys. Rev. B 63, 155315 (2001). 10.1103/PhysRevB.63.155315
- (2001) Phys. Rev. B , vol.63 , pp. 155315
- Betti, M.G.¹ Corradini, V.² Bertoni, G.³ Casarini, P.⁴ Mariani, C.⁵ Abramo, A.⁶

23
- 34249089947
- Quantum Hall effect at cleaved InSb surfaces and low-temperature annealing effect
- DOI 10.1063/1.2740579
- R. Masutomi, M. Hio, T. Mochizuki, and T. Okamoto, Appl. Phys. Lett. 90, 202104 (2007). 10.1063/1.2740579 (Pubitemid 46793997)
- (2007) Applied Physics Letters , vol.90 , Issue.20 , pp. 202104
- Masutomi, R.¹ Hio, M.² Mochizuki, T.³ Okamoto, T.⁴

24
- 23944444320
- Two-dimensional electrons at a cleaved semiconductor surface: Observation of the quantum Hall effect
- DOI 10.1063/1.2009811, 062103
- Y. Tsuji, T. Mochizuki, and T. Okamoto, Appl. Phys. Lett. 87, 062103 (2005). 10.1063/1.2009811 (Pubitemid 41202701)
- (2005) Applied Physics Letters , vol.87 , Issue.6 , pp. 1-3
- Tsuji, Y.¹ Mochizuki, T.² Okamoto, T.³

25
- 0000840355
- 10.1103/PhysRevB.61.15588
- T. Matsuyama, R. Kürsten, C. Meißner, and U. Merkt, Phys. Rev. B 61, 15588 (2000). 10.1103/PhysRevB.61.15588
- (2000) Phys. Rev. B , vol.61 , pp. 15588
- Matsuyama, T.¹ Kürsten, R.² Meißner, C.³ Merkt, U.⁴

26
- 0033707971
- 10.1103/PhysRevLett.84.5588
- M. Morgenstern, C. Wittneven, R. Dombrowski, and R. Wiesendanger, Phys. Rev. Lett. 84, 5588 (2000). 10.1103/PhysRevLett.84.5588
- (2000) Phys. Rev. Lett. , vol.84 , pp. 5588
- Morgenstern, M.¹ Wittneven, C.² Dombrowski, R.³ Wiesendanger, R.⁴

27
- 0034888013
- 10.1103/PhysRevB.63.201301
- M. Morgenstern, V. Gudmundsson, R. Dombrowski, C. Wittneven, and R. Wiesendanger, Phys. Rev. B 63, 201301 (R) (2001). 10.1103/PhysRevB.63.201301
- (2001) Phys. Rev. B , vol.63 , pp. 201301
- Morgenstern, M.¹ Gudmundsson, V.² Dombrowski, R.³ Wittneven, C.⁴ Wiesendanger, R.⁵

28
- 0041837577
- 10.1103/PhysRevB.68.041402
- J. Wiebe, C. Meyer, J. Klijn, M. Morgenstern, and R. Wiesendanger, Phys. Rev. B 68, 041402 (R) (2003). 10.1103/PhysRevB.68.041402
- (2003) Phys. Rev. B , vol.68 , pp. 041402
- Wiebe, J.¹ Meyer, C.² Klijn, J.³ Morgenstern, M.⁴ Wiesendanger, R.⁵

29
- 0037163818
- 10.1103/PhysRevLett.89.136806
- M. Morgenstern, J. Klijn, C. Meyer, M. Getzlaff, R. Adelung, R. A. Römer, K. Rossnagel, L. Kipp, M. Skibowski, and R. Wiesendanger, Phys. Rev. Lett. 89, 136806 (2002). 10.1103/PhysRevLett.89.136806
- (2002) Phys. Rev. Lett. , vol.89 , pp. 136806
- Morgenstern, M.¹ Klijn, J.² Meyer, C.³ Getzlaff, M.⁴ Adelung, R.⁵ Römer, R.A.⁶ Rossnagel, K.⁷ Kipp, L.⁸ Skibowski, M.⁹ Wiesendanger, R.¹⁰

30
- 0037422944
- 10.1103/PhysRevLett.90.056804
- M. Morgenstern, J. Klijn, C. Meyer, and R. Wiesendanger, Phys. Rev. Lett. 90, 056804 (2003). 10.1103/PhysRevLett.90.056804
- (2003) Phys. Rev. Lett. , vol.90 , pp. 056804
- Morgenstern, M.¹ Klijn, J.² Meyer, C.³ Wiesendanger, R.⁴

31
- 57949113920
- 10.1103/PhysRevLett.101.256802
- K. Hashimoto, C. Sohrmann, J. Wiebe, T. Inaoka, F. Meier, Y. Hirayama, R. A. Römer, R. Wiesendanger, and M. Morgenstern, Phys. Rev. Lett. 101, 256802 (2008). 10.1103/PhysRevLett.101.256802
- (2008) Phys. Rev. Lett. , vol.101 , pp. 256802
- Hashimoto, K.¹ Sohrmann, C.² Wiebe, J.³ Inaoka, T.⁴ Meier, F.⁵ Hirayama, Y.⁶ Römer, R.A.⁷ Wiesendanger, R.⁸ Morgenstern, M.⁹

32
- 66549094133
- 10.1063/1.3127589
- T. Mashoff, M. Pratzer, and M. Morgenstern, Rev. Sci. Instrum. 80, 053702 (2009). 10.1063/1.3127589
- (2009) Rev. Sci. Instrum. , vol.80 , pp. 053702
- Mashoff, T.¹ Pratzer, M.² Morgenstern, M.³

33
- 0001424651
- 10.1116/1.585508
- L. J. Whitman, J. A. Stroscio, R. A. Dragoset, and R. J. Celotta, J. Vac. Sci. Technol. B 9, 770 (1991). 10.1116/1.585508
- (1991) J. Vac. Sci. Technol. B , vol.9 , pp. 770
- Whitman, L.J.¹ Stroscio, J.A.² Dragoset, R.A.³ Celotta, R.J.⁴

34
- 0001379442
- 10.1116/1.583691
- R. M. Feenstra and J. A. Stroscio, J. Vac. Sci. Technol. B 5, 923 (1987). 10.1116/1.583691
- (1987) J. Vac. Sci. Technol. B , vol.5 , pp. 923
- Feenstra, R.M.¹ Stroscio, J.A.²

35
- 0000032861
- 10.1103/PhysRevB.59.8043
- R. Dombrowski, C. Steinebach, C. Wittneven, M. Morgenstern, and R. Wiesendanger, Phys. Rev. B 59, 8043 (1999). 10.1103/PhysRevB.59.8043
- (1999) Phys. Rev. B , vol.59 , pp. 8043
- Dombrowski, R.¹ Steinebach, C.² Wittneven, C.³ Morgenstern, M.⁴ Wiesendanger, R.⁵

36
- 85032069152
- 10.1103/RevModPhys.54.437
- T. Ando, A. B. Fowler, and F. Stern, Rev. Mod. Phys. 54, 437 (1982). 10.1103/RevModPhys.54.437
- (1982) Rev. Mod. Phys. , vol.54 , pp. 437
- Ando, T.¹ Fowler, A.B.² Stern, F.³

37
- 1542620763
- 10.1142/S0218625X0300575X
- M. Morgenstern, Surf. Rev. Lett. 10, 933 (2003). 10.1142/ S0218625X0300575X
- (2003) Surf. Rev. Lett. , vol.10 , pp. 933
- Morgenstern, M.¹

38
- 0035356466
- 10.1063/1.1368156
- I. Vurgaftman, J. R. Meyer, and L. R. Ram-Mohan, J. Appl. Phys. 89, 5815 (2001). 10.1063/1.1368156
- (2001) J. Appl. Phys. , vol.89 , pp. 5815
- Vurgaftman, I.¹ Meyer, J.R.² Ram-Mohan, L.R.³

39
- 0001754285
- 10.1080/00018737400101371
- W. Zawadzki, Adv. Phys. 23, 435 (1974). 10.1080/00018737400101371
- (1974) Adv. Phys. , vol.23 , pp. 435
- Zawadzki, W.¹

40
- 0000045254
- 10.1103/PhysRevB.48.8918
- R. Winkler and U. Rössler, Phys. Rev. B 48, 8918 (1993). 10.1103/PhysRevB.48.8918
- (1993) Phys. Rev. B , vol.48 , pp. 8918
- Winkler, R.¹ Rössler, U.²

41
- 30244514592
- 10.1016/0022-3697(57)90013-6
- E. O. Kane, J. Phys. Chem. Solids 1, 249 (1957). 10.1016/0022-3697(57) 90013-6
- (1957) J. Phys. Chem. Solids , vol.1 , pp. 249
- Kane, E.O.¹

42
- 0000714663
- 10.1103/PhysRevB.35.2460
- U. Merkt and S. Oelting, Phys. Rev. B 35, 2460 (1987). 10.1103/PhysRevB.35.2460
- (1987) Phys. Rev. B , vol.35 , pp. 2460
- Merkt, U.¹ Oelting, S.²

43
- 20444375215
- 10.1103/PhysRevB.50.8523
- E. A. de Andrada e Silva, G. C. La Rocca, and F. Bassani, Phys. Rev. B 50, 8523 (1994). 10.1103/PhysRevB.50.8523
- (1994) Phys. Rev. B , vol.50 , pp. 8523
- De Andradasilva, E.E.A.¹ La Rocca, G.C.² Bassani, F.³

44
- 17744411162
- Imaging of friedel oscillation patterns of two-dimensionally accumulated electrons at epitaxially grown InAs(111)A surfaces
- DOI 10.1103/PhysRevLett.86.3384
- K. Kanisawa, M. J. Butcher, H. Yamaguchi, and Y. Hirayama, Phys. Rev. Lett. 86, 3384 (2001). 10.1103/PhysRevLett.86.3384 (Pubitemid 32380641)
- (2001) Physical Review Letters , vol.86 , Issue.15 , pp. 3384-3387
- Kanisawa, K.¹ Butcher, M.J.² Yamaguchi, H.³ Hirayama, Y.⁴

45
- 26144433204
- 10.1103/PhysRevLett.42.673
- E. Abrahams, P. W. Anderson, D. C. Licciardello, and T. V. Ramakrishnan, Phys. Rev. Lett. 42, 673 (1979). 10.1103/PhysRevLett.42.673
- (1979) Phys. Rev. Lett. , vol.42 , pp. 673
- Abrahams, E.¹ Anderson, P.W.² Licciardello, D.C.³ Ramakrishnan, T.V.⁴

46
- 0038625404
- 10.1016/S1386-9477(02)00585-4
- M. Morgenstern, D. Haude, J. Klijn, C. Meyer, L. Sacharow, S. Heinze, S. Blügel, and R. Wiesendanger, Physica E 16, 121 (2003). 10.1016/S1386- 9477(02)00585-4
- (2003) Physica e , vol.16 , pp. 121
- Morgenstern, M.¹ Haude, D.² Klijn, J.³ Meyer, C.⁴ Sacharow, L.⁵ Heinze, S.⁶ Blügel, S.⁷ Wiesendanger, R.⁸

47
- 0020789739
- 10.1002/pssb.2221180153
- L. M. Kanskaya, S. I. Kokhanovskii, K. P. Seysyan, and Al. L. Efros, Phys. Status Solidi B 118, 447 (1983). 10.1002/pssb.2221180153
- (1983) Phys. Status Solidi B , vol.118 , pp. 447
- Kanskaya, L.M.¹ Kokhanovskii, S.I.² Seysyan, K.P.³ Efros, Al.L.⁴

48
- 0001343201
- 10.1103/PhysRevB.29.3303
- R. Joynt and R. E. Prange, Phys. Rev. B 29, 3303 (1984). 10.1103/PhysRevB.29.3303
- (1984) Phys. Rev. B , vol.29 , pp. 3303
- Joynt, R.¹ Prange, R.E.²

49
- 0021488632
- 10.1143/JPSJ.53.3101
- T. Ando, J. Phys. Soc. Jpn. 53, 3101 (1984). 10.1143/JPSJ.53.3101
- (1984) J. Phys. Soc. Jpn. , vol.53 , pp. 3101
- Ando, T.¹

50
- 59149088882
- 10.1103/PhysRevLett.102.026803
- Y. Niimi, H. Kambara, and H. Fukuyama, Phys. Rev. Lett. 102, 026803 (2009). 10.1103/PhysRevLett.102.026803
- (2009) Phys. Rev. Lett. , vol.102 , pp. 026803
- Niimi, Y.¹ Kambara, H.² Fukuyama, H.³

51
- 0001385634
- 10.1016/0039-6028(82)90573-8
- G. E. Marques and L. J. Sham, Surf. Sci. 113, 131 (1982). 10.1016/0039-6028(82)90573-8
- (1982) Surf. Sci. , vol.113 , pp. 131
- Marques, G.E.¹ Sham, L.J.²

52
- 28244442748
- Nonexponential spin relaxation in magnetic fields in quantum wells with random spin-orbit coupling
- DOI 10.1103/PhysRevB.71.241312, 241312
- M. M. Glazov and E. Y. Sherman, Phys. Rev. B 71, 241312 (R) (2005). 10.1103/PhysRevB.71.241312 (Pubitemid 41702951)
- (2005) Physical Review B - Condensed Matter and Materials Physics , vol.71 , Issue.24 , pp. 1-4
- Glazov, M.M.¹ Sherman, E.Ya.²

53
- 0037179314
- 10.1103/PhysRevLett.89.096805
- V. M. Apalkov and M. E. Raikh, Phys. Rev. Lett. 89, 096805 (2002). 10.1103/PhysRevLett.89.096805
- (2002) Phys. Rev. Lett. , vol.89 , pp. 096805
- Apalkov, V.M.¹ Raikh, M.E.²

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.