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Professor
Tang,Shu-Jung
 personal web

　
Office：886-3-5742272 (PHYS R102)
Fax：886-3-5723052
E-mail：sjtang@phys.nthu.edu.tw

Education
  1. 1995-2002 Ph.D in Physics, University of Tennessee, Knoxville, U.S.A.
  2. 1989-1993 B.S. in Physics, Tamkang University, Taiwan, R.O.C.
Professional Experience
Current position：

   2014-present, Professor, National Tsing Hua University, R.O.C.

Experience：：

  1. 2010-2014, Associate Professor, Tsing Hua University, R.O.C.
  2. 2006-2010, Assistant Professor, Tsing Hua University, R.O.C.
  3. 2003-2006, Postdoctoral research associate, University of Illinois at Urbana-Champaign
Research Fields
    1. Surface Physics
    2. Photoelectron
    3. LEED Microscopy
    4. Electronic structures of metal surfaces, thin films and organic thin films.
Research Interests and achievement
Updated on September 3, 2006

My PhD researches were various. Among them I was mostly concentrated on the study of electron-phonon coupling on Be surface. Beryllium is a very interesting metal in the sense that it is a semimetal with a very large band gap over the brillouin zone, but on the surface, it is free electron-like and there exist very localized surface states, which behave completely different from the bulk states. The electron–phonon coupling strength of the most localized surface state is 3 times larger than the bulk states of Beryllium. From the Photoemission spectra of surface states, I successfully characterized the density of phonon states which dominate the coupling of the localized surface states of Be surface through the temperature dependence of imaginary part of self energies, and the energy dependence of real part of self energy. The further direction I plan to go is to study the interplay between the surface states and the surface lattice behavior, like surface relaxation and surface thermal expansion. In my post-doctor career, I was focused on the quantum well states of metal thin film on semiconductor surface (e.g. Ag /Ge(111)). Thin films are widely employed in device designs. For example, if a film is made of magnetic material, the quantum well states are closely correlated with magnetic properties such as oscillatory magnetic coupling and giant magnetoresistance (GMR), which have been applied to magnetic storage devices. My study on the Ag/Ge(111) system has two important discoveries.

1. The atomically uniform film can be made for this system on a certain deposition and annealing condition.

2. The substrate can strongly modify electronic structures of the thin film. These two findings are certainly important and might lead to the enhancement of certain important properties for the application of thin films. The major experimental technique I use is the Photoemission which is the best tool to detect the electronic band structures and behaviors. I'm cooperating with National Synchrotron Radiation Research Center ( NSRRC) for the Photoemission experiments. In the future, I will also plan to use Low Energy Electronic Microscopy (LEEM) to study the surface morphology and the thin film growth. Currently, I also cooperate with Prof. Hisao Ishii form Chiba university in Japan on the study of the interfacial and molecule orbital electronic structures of organic thin films on metal surfaces. Our aim is to grow crystalline uniform organic thin films on the atomically uniform metal thin films.

Selected Publications

Selected Publications:

1.          [2015] Deeper insight into phase relations in ultrathin Pb films, Ro-Ya Liu, Angus Huang, Chien-Chung Huang, Chang-Yeh Lee, Chung-Huang Lin, Cheng-Maw Cheng, Ku-Ding Tsuei, Horng-Tay Jeng, Iwao Matsuda, and S.-J. Tang*, Phys. Rev. B 92, 115415 (2015)

2.          [2105] Significantly enhanced giant Rashba splitting in a thin film of binary alloy, Wei-Chuan Chen, Tay-Rong Chang, Sun-Ting Tsai, S Yamamoto, Je-Ming Kuo, Cheng-Maw Cheng, Ku-Ding Tsuei, Koichiro Yaji, Hsin Lin, H-T Jeng, Chung-Yu Mou, Iwao Matsuda and S.-J. Tang*, New J. Phys. 17, 083015 (2015).

3.          [2014] Rashba effect within the space charge layer of a semiconductor, Chung-Huang Lin, Tay-Rong Chang, Ro.-Ya. Liu, Cheng-Maw Cheng, Ku-Ding Tsuei, H.-T. Jeng, Chung-Yu Mou, Iwao Matsuda, S.-J. Tang*, New J. Phys.16 (2014) 045003 (Focus issue on the Rashba effect).

4.          [2013] Tuning gap states at organic-metal interface by quantum size effects, Meng-Kai Lin, Yasuo Nakayama, Chin-Hung Chen, Chin-Yung Wang, Shin-ichi Machida, H.-T. Jeng, Tun-Wen Pi, Hisao Ishii, S.-J. Tang*,

Nature Communications 4, 2925 (2013).

5.          [2013] Oscillatory relaxation of surface photovoltage on a silicon surface, M. Ogawa, S. Yamamoto, R. Yukawa, R. Hobara, C.-H. Lin, R.-Y. Liu, S.-J. Tang, and I. Matsuda, Phys. Rev. B 87, 235308 (2013)

6.          [2012] Controlling the Topology of Fermi Surfaces in Metal Nanofilms, M. Ogawa, A. Gray, P. M. Sheverdyaeva, P. Moras, H. Hong, L.-C. Huang, S.-J. Tang, K. Kobayashi, C. Carbone, T.-C. Chiang, and I. Matsuda, Phys. Rev. Lett. 109, 026802 (2012).

7.          [2012] Interfacial properties at the organic-metal interface probed using quantum-well  states, Meng-Kai Lin,Yasuo Nakayama, Chin-Youg Wang, Che-Chia Hsu, Shinichi Machida , Tun-Wen Pi, Hisao Ishii, S. -J. Tang*, Phys. Rev. B 86, 155453 (2012).

8.          [2011]Consonant diminution of lattice and electronic coupling between a film and a substrate: Pb on Ge(100),  Pei-Wen Chen, Yu-Hsuan Lu, Chi-Bin Wang,  Tay-Rong Chang, Cheng-Maw Cheng, Ku-Ding Tsuei, H.-T. Jeng, S. -J. Tang*, Phys. Rev. B. 84, 205401 (2011).

9.          [2011] Electronic versus Lattice Match for Metal-Semiconductor Epitaxial     Growth: Pb on Ge(111), S. -J. Tang*, Chang-Yeh Lee, Chien-Chung Huang, Tay-Rong Chang, Cheng-Maw Cheng, Ku-Ding Tsuei, H.-T. Jeng,V. Yeh, and Tai-Chang Chiang, Phys. Rev. Lett., 107, 066802 (2011).

10.      [2010] Interface electronic structures of 2-amino-4,5-imidazoledicarbonitrile on Ag and Al surfaces, Yasuo Nakayama, Yen-Hao Huang, Ching-Hsuan Wei, Shinichi Machida, Takuya Kubo, Tun-Wen Pi, S. -J. Tang, Yutaka Noguchi, and Hisao Ishii, J. Appl. Phys. 108, 053702 (2010)

11.      [2010] Dispersive resonance bands within the space charge layer of metal- semiconductor junction, S. -J. Tang*, T. -R. Chang, Chien-Chung Huang, Chang-Yeh Lee, Cheng-Maw Cheng, Ku-Ding Tsuei, H. -T. Jeng, Chung-Yu Mou, Phys. Rev. B. 81, 245406 (2010).

12.      [2010] Bilayer oscillation of subband effective masses in Pb/Ge(111) thin-film quantum wells, S. -J. Tang*, Chang-Yeh Lee, Chien-Chung Huang, Tay-Rong Chang, Cheng-Maw Cheng, Ku-Ding Tsuei, and H.-T. Jeng, Appl. Phys. Lett. 96,103106 (2010).

13.      [2009] Surface electronic band structure and temperature dependence of the surface state at A bar on Mg(1010) surface, S. -J. Tang*, H.-T. Jeng, Ismail, P. T. Sprunger, and E. W. Plummer, Phys. Rev. B, 80 , 085419 (2009).

14.      [2008] Enhancement of subband effective mass in Ag/Ge(111) thin film quantum wells, S. -J. Tang*, Wen-Kai Chang, Yu-Mei Chiu, Hsin-Yi Chen, Cheng-Maw Cheng, Ku-Ding Tsuei, T. Miller, and T.-C. Chiang, Phys. Rev. B 78, 245407 (2008)

15.      [2008] Interface-induced complex electronic interference structures in Ag films on Ge(111), Y. Liu, N. J. Speer, S. -J. Tang, T. Miller, and T.-C. Chiang, Phys. Rev. B 78, 035443 (2008).

16.      [2008] Surface state influence on the surface lattice structure in Be(1010) , S. -J. Tang*, H.-T. Jeng, Chen-Shiung Hsue, Ismail, P.T. Sprunger, and E. W. Plummer, Phys. Rev. B 77, 045405 (2008).

17.      [2006]Electronic Fringe Structure in Silver Films on Highly Doped Silicon, N. J. Speer, S. -J. Tang, T. Miller, and T.-C. Chiang, Science 314, 804 (2006).

18.      [2006]Umklapp-mediated Quantization of Electronic States in Ag Films on Ge(111), S. -J. Tang*, Y. R. Lee, S. -L. Chang, T. Miller, and T. -C. Chiang, Phys. Rev. Lett. 96, 216803 (2006).

19.      [2006]Sublimation of Atomic Layers from a Chromium Surface, S. -J. Tang*, S. Kodambaka, W. Swiech, I. Petrov, T. -C. Chiang, Phys. Rev. Lett. 96, 126106 (2006)

20.      [2006]Modification of Surface States in Ultrathin Films via Hybridization with the Substrate – a Study of Ag on Ge, S. -J. Tang*, T. Miller, and T.-C. Chiang, Phys. Rev. Lett. 96, 036802 (2006).

21.      [2004]Breakup of Quasiparticles in Thin-Film Quantum Wells, S. -J. Tang*, L. Basile, T. Miller, and T.-C. Chiang, Phys. Rev. Lett. 93, 216804 (2004).

22.      [2004]Direct extraction of the Eliashberg function for electron-phonon coupling: A case study of Be . Junren Shih, S. -J. Tang, B. Wu, et al, Phys. Rev. Lett. 92, 186401 (2004).

23.      [2004]A spectroscopic view of electron phonon coupling at metal surfaces, S. -J. Tang, Junren Shih, B. Wu, et al, Physica Status Solidi (b), 241, 2345 (2004).

24.      [2002]The electron phonon coupling and the temperature dependent initial energy shifts of the surface states on Be(1010) , S. -J. Tang, Ismail, P. T. Sprunger, E. W. Plummer, Phys. Rev. B 65, 235428 (2002).

1.          Deeper insight into phase relations in ultrathin Pb films, Ro-Ya Liu, Angus Huang, Chien-Chung Huang, Chang-Yeh Lee, Chung-Huang Lin, Cheng-Maw Cheng, Ku-Ding Tsuei, Horng-Tay Jeng, Iwao Matsuda, and S.-J. Tang*, Phys. Rev. B 92, 115415 (2015)

 

2.          Significantly enhanced giant Rashba splitting in a thin film of binary alloy, Wei-Chuan Chen, Tay-Rong Chang, Sun-Ting Tsai, S Yamamoto, Je-Ming Kuo, Cheng-Maw Cheng, Ku-Ding Tsuei, Koichiro Yaji, Hsin Lin, H-T Jeng, Chung-Yu Mou, Iwao Matsuda and S.-J. Tang*, New J. Phys. 17, 083015 (2015).

 

3.          Rashba effects within the space charge layer of a semiconductor, Chung-Huang Lin, Tay-Rong Chang, Ro.-Ya. Liu, Cheng-Maw Cheng, Ku-Ding Tsuei, H.-T. Jeng, Chung-Yu Mou, Iwao Matsuda, S.-J. Tang*,

New J. Phys.16 (2014) 045003 (Focus issue on the Rashba effect).

 

4.          Non-linear kinetic model for oscillatory relaxation of the photovoltage effect on a Si(111)7×7 surface, M. Ogawa, R.-Y. Liu, C.-H. Lin, S. Yamamoto, R.Yukawa, R. Hobara, S.-J. Tang, and I. Matsuda, Surf. Sci., 624, (2014), 70-75. (Impact factor: 1.838)

 

5.          Tuning gap states at organic-metal interface by quantum size effects, Meng-Kai Lin, Yasuo Nakayama, Chin-Hung Chen, Chin-Yung Wang, Shin-ichi Machida, H.-T. Jeng, Tun-Wen Pi, Hisao Ishii, S.-J. Tang*,

Nature Communications 4, 2925 (2013).

                                                                          

6.          Relaxations of the surface photovoltage effect on the atomically controlled semiconductor surfaces studied by time-resolved photoemission spectroscopy,  M. Ogawa, S. Yamamoto, K. Fujikawa, R. Hobara, R. Yukawa, Sh. Yamamoto, S. Kitagawa, D. Pierucci, M. G. Silly, C.-H. Lin, R.-Y. Liu, H. Daimon, F. Sirotti, S.-J. Tang, and I. Matsuda, Phys. Rev. B 88, 165313 (2013)

 

7.          Oscillatory relaxation of surface photovoltage on a silicon surface, M. Ogawa, S. Yamamoto, R. Yukawa, R. Hobara, C.-H. Lin, R.-Y. Liu, S.-J. Tang, and I. Matsuda, Phys. Rev. B 87, 235308 (2013)

 

8.          Controlling the Topology of Fermi Surfaces in Metal Nanofilms, M. Ogawa, A. Gray, P. M. Sheverdyaeva, P. Moras, H. Hong, L.-C. Huang, S.-J. Tang, K. Kobayashi, C. Carbone, T.-C. Chiang, and I. Matsuda, Phys. Rev. Lett. 109, 026802 (2012).

 

9.          Interfacial properties at the organic-metal interface probed using quantum-well states, Meng-Kai Lin,Yasuo Nakayama, Chin-Youg Wang, Che-Chia Hsu, Shinichi Machida , Tun-Wen Pi, Hisao Ishii, S. -J. Tang*, Phys. Rev. B 86, 155453 (2012).

 

10.      Experimental Determination of Electron Affinities for InN and GaN Polar Surfaces, Shih-Chieh Lin, Cheng-Tai Kuo, Xiaoge Liu, Li-Yen Liang, Ching-Hung Cheng, Chung-Huang Lin, Shu-Jung Tang, Lo-Yueh Chan, Chia-Hao Chen, and Shangjr Gwo, Applied Physics Express 5, 031003(2012).

 

11.      Interface Electronic Structure of Zinc-Phthalocyanine on the Silver Thin-Film Quantum-Well, Yasuo Nakayama, Meng-Kai Lin and Chin-Yung Wang, Tun-Wen Pi, Hisao Ishii, and S.-J. Tang, e-J. Surf. Sci. Nanotech. 10, 149-152, (2012).

 

12.      Consonant diminution of lattice and electronic coupling between a film and a substrate: Pb on Ge(100),  Pei-Wen Chen, Yu-Hsuan Lu, Chi-Bin Wang,  Tay-Rong Chang, Cheng-Maw Cheng, Ku-Ding Tsuei, H.-T. Jeng, S. -J. Tang*, Phys. Rev. B. 84, 205401 (2011).

 

13.      Electronic versus Lattice Match for Metal-Semiconductor Epitaxial Growth: Pb on Ge(111), S. -J. Tang*, Chang-Yeh Lee, Chien-Chung Huang, Tay-Rong Chang, Cheng-Maw Cheng, Ku-Ding Tsuei, H.-T. Jeng,V. Yeh, and Tai-Chang Chiang, Phys. Rev. Lett., 107, 066802 (2011).

 

14.      Is electron accumulation universal at InN polar surfaces? Cheng-Tai Kuo (郭承泰), Shih-Chieh Lin (林詩傑)1, Kai-Kuen Chang (張凱焜), Hung-Wei Shiu (許紘瑋), Lo-Yueh Chang (張羅嶽), Chia-Hao Chen (陳家浩), Shu-Jung Tang (唐述中), and Shangjr Gwo (果尚志), Appl. Phys. Lett. 98, 052101 (2011).

 

15.      Interface electronic structures of 2-amino-4,5-imidazoledicarbonitrile on Ag and Al surfaces, Yasuo Nakayama, Yen-Hao Huang, Ching-Hsuan Wei, Shinichi Machida, Takuya Kubo, Tun-Wen Pi, S. -J. Tang, Yutaka Noguchi, and Hisao Ishii, J. Appl. Phys. 108, 053702 (2010). (Impact factor 2.072)

 

16.      Photoemission study on the electronic structures of 2-amino-4,5-imidazoledicarbonitrile (AIDCN)-metal interfaces as a model of an organic nonvolatile memory device, Yasuo Nakayama, Yen-Hao Huang, Ching-Hsuan Wei, Takuya Kubo, Shinichi Machida, Tun-Wen Pi, Shu-Jung Tang, Yutaka Noguchi, and Hisao Ishii, J. Surf. Sci. Soc. Jpn. 31(9), 434-440 (2010).

 

17.      Dispersive resonance bands within the space charge layer of metal- semiconductor junction, S. -J. Tang*, T. -R. Chang, Chien-Chung Huang, Chang-Yeh Lee, Cheng-Maw Cheng, Ku-Ding Tsuei, H. -T. Jeng, Chung-Yu Mou, Phys. Rev. B. 81, 245406 (2010). (Impact factor 3.322)

 

18.      Bilayer oscillation of subband effective masses in Pb/Ge(111) thin-film quantum wells, S. -J. Tang*, Chang-Yeh Lee, Chien-Chung Huang, Tay- Rong Chang, Cheng-Maw Cheng, Ku-Ding Tsuei, and H. -T. Jeng, Appl. Phys. Lett. 96, 103106 (2010). (citations: 0) (Impact factor 3.726)

 

19.      Surface electronic band structure and temperature dependence of the surface state at A bar on Mg(1010) surface, S. -J. Tang*, H.-T. Jeng, Ismail, P. T. Sprunger, and E. W. Plummer, Phys. Rev. B 80, 085419 (2009). (citations: 0)  (Impact factor 3.322)

 

20.      Interface-induced complex electronic interference structures in Ag films on Ge(111), Y. Liu, N. J. Speer, S.-J. Tang, T. Miller, and T.-C. Chiang, Phys. Rev. B 78, 035443 (2008). (citations: 3) (Impact factor 3.322)

 

21.      Enhancement of subband effective mass in Ag/Ge(111) thin film quantum wells, S.-J. Tang*, Wen-Kai Chang, Yu-Mei Chiu, Hsin-Yi Chen, Cheng-Maw Cheng, Ku-Ding Tsuei, T. Miller, and T.-C. Chiang, Phys. Rev. B 78, 245407 (2008). (citations: 5) (Impact factor 3.322)

 

22.      Surface state influence on the surface lattice structure in Be, S. -J. Tang*, H.-T. Jeng, Chen-Shiung Hsue, Ismail, P.T. Sprunger, and E. W. Plummer, Phys. Rev. B 77, 045405 (2008). (citations: 3) (Impact factor 3.322)

 

23.      Coherent Electronic Fringe Structure in Incommensurate Silver-Silicon Quantum Wells, N. J. Speer, S.-J. Tang, T. Miller, T.-C. Chiang, Science, 314, 804 (2006). (citations: 24) (Impact factor: 30.028)

 

24.      Umklapp-mediated Quantization of Electronic States in Ag Films on Ge(111), S. -J. Tang*, Y. R. Lee, S. -L. Chang, T. Miller, and T. -C. Chiang, Phys. Rev. Lett. 96, 216803 (2006). Selected for the Virtual Journal of Nanoscale Science & Technology 13 (23) 2006. (citations: 16) (Impact factor: 7.180)

 

25.      Sublimation of Atomic Layers from a Chromium Surface, S. -J. Tang*, S. Kodambaka, W. Swiech, I. Petrov, T. -C. Chiang, Phys. Rev. Lett. 96, 126106 (2006). (citations: 8 ) (Impact factor: 7.180)

 

26.      Modification of Surface States in Ultrathin Films via Hybridization with the Substrate – a Study of Ag on Ge, S. -J. Tang*, T. Miller, and T.-C. Chiang, Phys. Rev. Lett. 96, 036802 (2006). Selected for the Virtual Journal of Nanoscale Science & Technology 13 (5) 2006.(citations: 25) (Impact factor: 7.180)

 

27.      Breakup of Quasiparticles in Thin-Film Quantum Wells, S. -J. Tang*, L. Basile, T. Miller, and T.-C. Chiang, Phys. Rev. Lett. 93, 216804 (2004). Selected for the Virtual Journal of Nanoscale Science & Technology 10 (22) 2004. (citations:26) (Impact factor: 7.180)

 

28.      A spectroscopic view of electron phonon coupling at metal surfaces, S. -J.  Tang, Junren Shih, B. Wu, et al, Physica Status Solidi (b), 241, 2345 (2004). (citations: 4 ) (Impact factor: 0.873)

 

29.      Direct extraction of the Eliashberg function for electron-phonon coupling: A case study of Be. Junren Shih, S.-J. Tang, B. Wu, et al, Phys Rev Lett. 92, 186401 (2004) (citations: 37) (Impact factor: 7.180)

 

30.      Enhanced electron-phonon coupling at metal surfaces. E.W. Plummer, Junren Shih, S. -J. Tang, et al. Progress in Surface Science, 74, 251-268,  (2003). (citations: 19) (Impact factor: 5.592)

 

31.      The investigation of the growth and thin film morphological structure of Be on Si(111)-(7 x 7)  by STM and UPS. D. A. Hite, S.-J. Tang , P. T. Sprunger, Chemical physics letters, 367, (2003), 129-135. (citations: 3) (Impact factor: 2.341)

 

32.      The electron phonon coupling and the temperature dependent initial energy shifts of the surface states on Be, S. -J. Tang, Ismail, P. T. Sprunger, E. W. Plummer, Phys Rev B 65, 235428 (2002). (citations: 33) (Impact factor: 3.322)

 

33.      Electronic structure of a surface quantum-wire array, K. Yoo, S. J. Tang, P. T Sprunger, I. Benito, J. Ortega, F. Flores, P.C. Snijders, M.C. Demeter, H.H. Weitering, Surf. Sci. 514, (2002), 100-107. (citations: 3) (Impact factor: 1.731)

 

34.      Photoemission band symmetries and dipole active modes of crystalline film of vinyidene fluoride(70%) with trifluoroethylene(30%) across the ferroelectric  transitions, Jaewu  Choi,  S. -J. Tang,  P.T Sprunger, P.A Dowben , J. Phys.Condens. Matter 12, (2000), 4735. (citations: 20) (Impact factor: 1.900)

35.      Electronic Structure and Molecular Orientation of Well-ordered Polyethylene Oligomer  (n-C44H90) on Cu(100) and Au(111) Surfaces Studied by UV Photoemission and Low Energy Electron Diffraction, H. Ishii, E. Morikawa, S. J. Tang, et al, Journal of Electron Spectroscopy and related Phenomena, 101-103, (1999), 559-564. (citations: 16) (Impact factor: 1.076)

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