Study of Electronic Structure of Ultrathin Co Films Epitaxially Grown on Cu (111) by Angle-Resolved Photoemission Spectroscopy

SU Run; LIU Feng-Qin; QIAN Hai-Jie

Chinese Physics C> 2003, Vol. 27> Issue(2) : 178-182

Study of Electronic Structure of Ultrathin Co Films Epitaxially Grown on Cu (111) by Angle-Resolved Photoemission Spectroscopy

Institute of High Energy Physics, CAS, Beijing 100039, China

Abstract
HTML
Reference
Related

PDF

Abstract：
Electronic structure of Co films grown by molecular-beam epitaxy on Cu (111) surface was studied by Synchrotron Radiation angle-resolved Photoemission Spectroscopy. The peak intensity of the surface state at the Γ point of Cu(111) surface Brillouin zone still can be distinguished even at the coverage of 2ML, which means that the growth mode is not the two-dimensional layer-by-layer mode. With changing the momentum along the direction of Γ-Λ-L of Brillouin zone of bulk copper by varying photon energy, we find that the most prominent peak of cobalt film both at the coverage of 1ML and 2ML disperses like that of the surface of Co(0001). With a fixed photon energy for the coverage of cobalt from 1ML to 2ML, the changes of cobalt energy band were obtained. It shows that the 3d-band modification do exist because of the interaction of substrate and film atoms at the initial stage of growth. Compared with theoretical calculations, we find that films show ferromagnetic characters even at 1ML thickness, and they might grow as bilayer island at the initial period of growth.

References

[1]

. Schneider C M ,Bressler P ,Schuster P et al.Phys.Rev.Lett.,1990,64:10592. Pappas D P ,K mper K P ,Hopster H .Phys.Rev.Lett.,1990,64:31793. Himpsel F J.Phys. Rev.Lett.,1991,67:22634. WANG D S ,Freeman A J,Krakauer H .Phys.Rev.,1982,B26:13405. Tersoff J,Falicov L M .Phys.Rev.,1982,B26:61866. Gonzalez L ,Miranda R ,SalmeroｎＭ et al. Phys.Rev.,1981,B24:32457. Victora R H ,Falicov L M .Phys.Rev.,1983,B28:52328. Gradmann U ,Ullrich K ,Pebler J et al.J .Magn.Magn.Mater.,1977,5:3399. Alkemper U ,Carbone C ,Vescovo E et al.Phys.Rev.,1994,B50,1749610. Kohlhepp J, Elmers H J, Cordes S et al.Phys.Rev.,1992,B45:1228711. Miranda R , Yndurain F ,Chandesris D et al.Phys.Rev.,1982,B25:52712. Himpsel F J, Eastman D E . Phys.Rev.,1980,B21:320713. Parkin S S , Bhadra R ,Roche K P .Phys.Rev.Lett.,1991,66:215214. QUI Z Q ,Pearson J, Bader S D .Phys.Rev.,1992,B46:819515. Rabe A ,Memme l N ,Steltenpohl A et al.Phys.Rev.Lett.,1994,73:272816. Figuera J de la,Prieto J E ,Ocal C et al.Phys.Rev.,1993,B47:1304317. Butterfield M T ,Crapper M D ,Noakes T et al.Phys.Rev.,2000,B62:1698418. Pedersen M ,B nicke I A ,L gsgaard E et al.Surf.Sci.,1997,387:86—10119. Himpsel F J, Knapp J A ,Eastman D E .Phys.Rev.,1979,B19:291920. Tersoff J,Falicov L M .Phys.Rev.,1982,B26:618621. Noffke J ,Fritsche L .J .Phys.,1981,C14:8922. Heimann P ,Marschall E ,Neddermeyer H et al.Phys.Rev.,1977,B16:2575

[1]	YIN Zhong-Bao , ZHOU Dai-Cui . Performance of the ALICE PHOS Front-End Electronics. Chinese Physics C, 2006, 30(12): 1165-1170.
[2]	XU Yi , XU Wang , MA Yu-Gang , CAI Xiang-Zhou , CHEN Jin-Gen , GU Jia-Hui , GUO Wei , PAN Qiang-Yan , SHEN Wen-Qing , WANG Cheng-Bin , WANG Hong-Wei , XU Jia-Qiang , YUAN Ren-Yong . Study on the Reaction Rate of Key Reaction $\bf ^{12}$C($\bm\upalpha$,~$\bm\upgamma$)$\bf ^{16}$O in Astrophysics Base on Shanghai Laser Electron $\bm\upgamma$ Source. Chinese Physics C, 2006, 30(S2): 252-254.
[3]	GAO Bin , ZHONG Jun , LIU Lei , LI Hong-Nian , LUO Yi , WANG Chun-Ru , WU Zi-Yu . Ultraviolet Photoelectron Spectroscopy of Fullerenes C₆₀ and C₇₀:A Model Study. Chinese Physics C, 2006, 30(4): 368-370.
[4]	QIAN Hai-Jie , YAN Yong-Lian , SU Run , WANG Jia-Ou . Study on Beam Spot Size Requirement in PES, BSRF and the Beamline Upgrade. Chinese Physics C, 2005, 29(S1): 144-147.
[5]	HONG Hao-Cai , WANG Jia-Ou , QIAN Hai-Jie , KUI Re-Xi , DONG Yu-Hui . Growth BaTiO3 film using Laser-MBE and in-situ measurement with photoemission. Chinese Physics C, 2005, 29(S1): 43-46.
[6]	KONG Wei , XI Chuan-Ying , YE Bang-Jiao , WENG Hui-Min , ZHOU Xian-Yi , HAN Rong-Dian . Two-Detector Doppler Broadening of Annihilation Radiation in Metals. Chinese Physics C, 2004, 28(11): 1234-1237.
[7]	JIN Yun-Fan , TIAN Hui-Xian , LIU Jie , XIE Er-Qing , WANG Zhi-Guang , ZHANG Chong-Hong , SUN You-Mei , ZHU Zhi-Yong , YAO Cun-Feng . Strong Electronic Excitation Effect of Swift Heavy Ions on C₆₀ Films. Chinese Physics C, 2004, 28(7): 781-785.
[8]	XIANG Rong , QUAN Sheng-Wen , LIN Lin , DING Yuan-Tao , LU Xiang-Yang , JIAO Fei , WANG Gui-Mei , ZHAO Kui . Research and Fabrication of the Photocathodes for DC-SC Photoinjector. Chinese Physics C, 2004, 28(7): 771-774.
[9]	JIANG Xiao-Ming , JIA Quan-Jie , HU Tian-Dou , HUANG Yu-Ying , ZHENG Wen-Li , HE Wei , XIAN Ding-Chang , SHI Bin , JIANG Zui-Min , WANG Xun . Study of Semiconductor Super Thin Heterostructures with Synchrotron Radiation X-Ray Standing Wave Technique. Chinese Physics C, 2001, 25(6): 588-594.
[10]	TAN Wei-Shi , YOU Biao , ZHANG Jie-Qiu , WU Xiao-Shan , HU An , JIANG Shu-Sheng , WANG Jun , JIA Quan-Jie , ZHANG Wen-Li , JIANG Xiao-Ming . Magnetoresistance and Structural Studies on Co/Cu Multilayers with the Combination of the first and Second Antiferromagnetic Oscillation Peak. Chinese Physics C, 2001, 25(S1): 106-109.
[11]	GUO Zhi-Yuan , QIN Qing , ZHANG Chuang , MA Li . Study on Beam Photoelectron Instability in BEPC. Chinese Physics C, 2001, 25(3): 251-257.
[12]	XU Ya-Bo , LI Hong-Nian , BAO Shi-Ning , LI Hai-Yang , QIAN Hai-Jie , LIU Feng-Qin , Kurash Ibrahim , JIA Jin-Feng , XUE Qi-Kun . Synchrotron Radiation Angle-Resolved Photoemission Study of the Orientational Phase Transition for K₃C₆₀. Chinese Physics C, 2001, 25(S1): 33-38.
[13]	Kurash Ibrahim , WU Zi-Yu , QIAN Hai-Jie , Abbas M.I. , SU Run , LIU Feng-Qin , XIAN Ding-Chang . Synchrotron Radiation Based Angle Integrated Photoemission Experiments and Data Treatments. Chinese Physics C, 2001, 25(S1): 21-27.
[14]	Kurash Ibrahim , WU Zi-Yu , QIAN Hai-Jie , LIU Feng-Qin , XIAN Ding-Chang . Valence Band Photoelectron Investigation of Pr_1-xSr_xMnO₃ System. Chinese Physics C, 2001, 25(S1): 28-32.
[15]	Zhu Yongsheng , Chen Jiangchuan , Cheng Baosen . The δ Ray Effect in Particle ldentification via Cherenkov Correlated Timing. Chinese Physics C, 1998, 22(7): 577-586.
[16]	Ju Xin , Peng Liangqiang , Deng Bin , Weng Huimin , Han Rongdian . Study on Lithium Fluoride Cluster-Based Nanophase Films by Low Energy Positron Beam. Chinese Physics C, 1997, 21(9): 844-850.
[17]	WENG Hu-Min , ZHOU Xian-Yi , XU Ji-Hua , SUN Shi-Jun , ZHU Jing-Sheng , WU Shu-Lan , HAN Rong-Dian . Microstructure of A1/GaAs Interface Studied by Slow Positron Beam. Chinese Physics C, 1993, 17(9): 775-783.
[18]	CHEN Zhi-Qian , ZHENG Ren-Rong , YIN Chuan-Zong . Mossbauer Study of GdBa₂Cu₃O_7－δ. Chinese Physics C, 1992, 16(5): 385-389.
[19]	ZHOU Xian-Yi , ZHANG Han , YUAN Song-Liu , WANG Shun-Xi , ZHU Jing-Sheng , ZHANG Qi-Rui . 1D-ACAR Spectra of YBa_2－xSr_xCu₃O_y. Chinese Physics C, 1991, 15(11): 961-965.
[20]	ZHANG Duan-Ming , LI Guo-Yuan , WANG Jian-An , HE Yuan-Jin . POSITRON ANNIHILATION STUDY OF PHASE TRANSITION IN HIGH-TEMPERATURE SUPERCONDUCTOR Y-Ba-Cu-O. Chinese Physics C, 1989, 13(9): 769-771.

Access

Get Citation

SU Run, LIU Feng-Qin and QIAN Hai-Jie. Study of Electronic Structure of Ultrathin Co Films Epitaxially Grown on Cu (111) by Angle-Resolved Photoemission Spectroscopy[J]. Chinese Physics C, 2003, 27(2): 178-182.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2002-03-06
Revised: 1900-01-01

Article Metric

Article Views(2907)
PDF Downloads(569)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Study of Electronic Structure of Ultrathin Co Films Epitaxially Grown on Cu (111) by Angle-Resolved Photoemission Spectroscopy

Corresponding author: SU Run,

Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date: 2002-03-06

Accepted Date: 1900-01-01

Available Online: 2003-02-05

Abstract: Electronic structure of Co films grown by molecular-beam epitaxy on Cu (111) surface was studied by Synchrotron Radiation angle-resolved Photoemission Spectroscopy. The peak intensity of the surface state at the Γ point of Cu(111) surface Brillouin zone still can be distinguished even at the coverage of 2ML, which means that the growth mode is not the two-dimensional layer-by-layer mode. With changing the momentum along the direction of Γ-Λ-L of Brillouin zone of bulk copper by varying photon energy, we find that the most prominent peak of cobalt film both at the coverage of 1ML and 2ML disperses like that of the surface of Co(0001). With a fixed photon energy for the coverage of cobalt from 1ML to 2ML, the changes of cobalt energy band were obtained. It shows that the 3d-band modification do exist because of the interaction of substrate and film atoms at the initial stage of growth. Compared with theoretical calculations, we find that films show ferromagnetic characters even at 1ML thickness, and they might grow as bilayer island at the initial period of growth.

HTML

Reference (1)

Study of Electronic Structure of Ultrathin Co Films Epitaxially Grown on Cu (111) by Angle-Resolved Photoemission Spectroscopy

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article