JMP  Vol.9 No.5 , April 2018
Co and Phthalocyanine Overlayers on the Quantum-Well System Co(001)/Cu: Spin-Polarized Electron Reflection Experiments
ABSTRACT
The influence of a Co or phthalocyanine (Pc) molecular overlayer on the properties of quantum-well resonances (QWR) in Cu layers atop Co(001) is studied by means of spin-polarized electron reflection. For Co atoms and Pc molecules, an energy shift of the QWR-induced signal is observed with increasing coverage and is attributed to a variation of the electron reflection phase at the Cu/Co and Cu/Pc interface. For Co we find a linear energy shift in the Cu QWR energy position with increasing coverage down to the sub-monolayer regime. This shows that the phase accumulation model remains accurate within the sub-monolayer regime of a discontinuous interface. An opposite sign in the energy shift between Co and Pc overlayers could reflect an opposite impact on the Cu surface work function of overlayer adsorption.
Cite this paper
Urbain, E. , Garreau, G. , Wetzel, P. , Boukari, S. , Beaurepaire, E. , Bowen, M. and Weber, W. (2018) Co and Phthalocyanine Overlayers on the Quantum-Well System Co(001)/Cu: Spin-Polarized Electron Reflection Experiments. Journal of Modern Physics, 9, 976-984. doi: 10.4236/jmp.2018.95060.
References
[1]   Milun, M., Pervan, P. and Woodruff, D.P. (2002) Reports on Progress in Physics, 65, 99-141.
https://doi.org/10.1088/0034-4885/65/2/201

[2]   Wei, C.M. and Chou, M.Y. (2002) Physical Review B, 66, Article ID: 233408.

[3]   Upton, M.H., Wei, C.M., Chou, M.Y., Miller, T. and Chiang, T.-C. (2004) Physical Review Letters, 93, Article ID: 026802.
https://doi.org/10.1103/PhysRevLett.93.026802

[4]   Kim, J., Qin, S., Yao, W., Niu, Q., Chou, M.Y. and Shih, C.-K. (2009) Proceedings of the National Academy of Sciences of the United States of America, 107, 12761.
https://doi.org/10.1073/pnas.0915171107

[5]   Miyata, N., Horikoshi, K., Hirahara, T., Hasegawa, S., Wei, C.M. and Matsuda, I. (2008) Physical Review B, 78, Article ID: 245405.
https://doi.org/10.1103/PhysRevB.78.245405

[6]   Aballe, L., Barinov, A., Locatelli, A., Heun, S. and Kiskinova, M. (2004) Physical Review Letters, 93, Article ID: 196103.
https://doi.org/10.1103/PhysRevLett.93.196103

[7]   Ma, X., Jiang, P., Qi, Y., Jia, J., Yang, Y., Duan, W., Li, W.-X., Bao, X., Zhang, S.B. and Xue, K.-Q. (2007) Proceedings of the National Academy of Sciences of the United States of America, 104, 9204-9208.
https://doi.org/10.1073/pnas.0611024104

[8]   Parkin, S.S.P., More, N. and Roche, K.P. (1990) Physical Review Letters, 64, 2304-2307.
https://doi.org/10.1103/PhysRevLett.64.2304

[9]   Bruno, P., Suzuki, Y. and Chappert, C. (1996) Physical Review B, 53, 9214.
https://doi.org/10.1103/PhysRevB.53.9214

[10]   Back, C.H., Weber, W., Bischof, A., Pescia, D. and Allenspach, R. (1995) Physical Review B, 52, R13114.
https://doi.org/10.1103/PhysRevB.52.R13114

[11]   Weber, W., Bischof, A., Allenspach, R., Würsch, C., Back, C.H. and Pescia, D. (1996) Physical Review Letters, 76, 3424-3427.
https://doi.org/10.1103/PhysRevLett.76.3424

[12]   Ney, A., Wilhelm, F., Farle, M., Poulopoulos, P., Srivastava, P. and Baberschke, K. (1999) Physical Review B, 59, R3938.
https://doi.org/10.1103/PhysRevB.59.R3938

[13]   Chiang, T.-C. (2000) Surface Science Reports, 39, 181-235.
https://doi.org/10.1016/S0167-5729(00)00006-6

[14]   Uchihashi, T., Zhang, J., Kröger, J. and Berndt, R. (2008) Physical Review B, 78, Article ID: 033402.
https://doi.org/10.1103/PhysRevB.78.033402

[15]   Zhang, X., Zhao, A., Wang, K. and Xiao, X. (2008) Physical Review B, 78, Article ID: 035431.

[16]   Fu, Y.-S., Ji, S.-H., Chen, X., Ma, X.-C., Wu, R., Wang, C.-C., Duan, W.-H., Qiu, X.-H., Sun, B., Zhang, P., Jia, J.-F. and Xue, Q.-K. (2007) Physical Review Letters, 99, Article ID: 256601.
https://doi.org/10.1103/PhysRevLett.99.256601

[17]   Lin, M.-K., Nakayama, Y., Chen, C.-H., Wang, C.-Y., Jeng, H.-T., Pi, T.-W., Ishii, H. and Tang, S.-J. (2013) Nature Communications, 4, Article No. 2925.
https://doi.org/10.1038/ncomms3925

[18]   Mueller, M.A., Miller, T. and Chiang, T.-C. (1990) Physical Review B, 41, 5214-5220.
https://doi.org/10.1103/PhysRevB.41.5214

[19]   Pierce, D.T., Celotta, R.J., Wang, G.C., Unertl, W.N., Galejs, A., Kuyatt, C.E. and Mielczarek, S.R. (1980) Review of Scientific Instruments, 51, 478-499.
https://doi.org/10.1063/1.1136250

[20]   Clarke, A., Jennings, G., Willis, R.F., Rous, P.J. and Pendry, J.B. (1987) Surface Science, 187, 327-338.
https://doi.org/10.1016/S0039-6028(87)80060-2

[21]   Krams, P., Lauks, F., Stamps, R.L., Hillebrands, B. and Güntherodt, G. (1992) Physical Review Letters, 69, 3674-3677.
https://doi.org/10.1103/PhysRevLett.69.3674

[22]   Heckmann, O., Magnan, H., le Fevre, P., Chandesris, D. and Rehr, J.J. (1994) Surface Science, 312, 62-72.
https://doi.org/10.1016/0039-6028(94)90803-6

[23]   Ramsperger, U., Vaterlaus, A., Pfäffli, P., Maier, U. and Pescia, D. (1996) Physical Review B, 53, 8001-8006.
https://doi.org/10.1103/PhysRevB.53.8001

[24]   Ortega, J.E., Himpsel, F.J., Mankey, G.J. and Willis, R.F. (1993) Physical Review B, 47, 1540-1552.
https://doi.org/10.1103/PhysRevB.47.1540

[25]   Joly, L., Tati-Bismaths, L. and Weber, W. (2006) Physical Review Letters, 97, Article ID: 187404.
https://doi.org/10.1103/PhysRevLett.97.187404

[26]   Guo, Q., Qin, Z., Zang, K., Liu, C., Yu, Y. and Cao, G. (2010) Langmuir, 26, 11804-11808.
https://doi.org/10.1021/la1019907

[27]   Djeghloul, F., Dey, P., Hallal, A., Urbain, E., Mahiddine, S., Gruber, M., Spor, D., Alouani, M., Bulou, H., Scheurer, F. and Weber, W. (2014) Physical Review B, 89, Article ID: 134411.
https://doi.org/10.1103/PhysRevB.89.134411

[28]   Egger, S., Back, C.H., Krewer, J. and Pescia, D. (1999) Physical Review Letters, 83, 2833-2836.
https://doi.org/10.1103/PhysRevLett.83.2833

[29]   Dey, P. and Weber, W. (2011) Journal of Physics: Condensed Matte, 23, Article ID: 473201.
https://doi.org/10.1088/0953-8984/23/47/473201

[30]   Joly, L., Tati-Bismaths, L., Scheurer, F. and Weber, W. (2007) Physical Review B, 76, Article ID: 104415.
https://doi.org/10.1103/PhysRevB.76.104415

[31]   van Gelderen, P., Crampin, S. and Inglesfield, J.E. (1996) Physical Review B, 53, 9115.
https://doi.org/10.1103/PhysRevB.53.9115

[32]   Schwingenschlögl, U., Uchihashi, T., Di Paola, C. and Berndt, R. (2010) Physical Review B, 82, Article ID: 033406.
https://doi.org/10.1103/PhysRevB.82.033406

[33]   Ochapski, M., Urbain, E., Djeghloul, F., Speisser, V., Majjad, H., Spor, D., Vu, A.D., Coraux, J., Rougemaille, N., Chen, G., Schmid, A.K., Suzuki, M., Yasue, T., Koshikawa, T., Bulou, H. and Weber, W. (2016) Physical Review B, 93, Article ID: 174411.
https://doi.org/10.1103/PhysRevB.93.174411

[34]   Javaid, S., Lebégue, S., Detlefs, B., Ibrahim, F., Djeghloul, F., Bowen, M., Boukari, S., Miyamachi, T., Arabski, J., Spor, D., Zegenhagen, J., Wulfhekel, W., Weber, W., Beaurepaire, E. and Alouani, M. (2013) Physical Review B, 87, Article ID: 155418.
https://doi.org/10.1103/PhysRevB.87.155418

 
 
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