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Volume 2 Issue 9
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Original Articles
MAGNETIC POLARITONS ON SUPERLATTICES
ZHOU Jing, CAO Shu
Chin. Phys. Lett. 1985, 2 (9): 385-388 .  
Abstract   PDF(pc) (53KB) ( 403 )
The magnetic polariton spectrum characteristic of collective behavior in magnetic/nonmagnetic superlattices has been obtained within the framework of a macroscopic theory.
THE RELATIONSHIP BETWEEN THE STRUCTURAL TYPE OF ANIONIC GROUP AND SHG EFFECT IN BORON-OXYGEN COMPOUNDS
CHEN Chuang-tian, WU Yi-cheng, LI Ru-kang
Chin. Phys. Lett. 1985, 2 (9): 389-392 .  
Abstract   PDF(pc) (49KB) ( 550 )
The relationship between the Structural type of anionic group and SHG effect in oxide compounds has been reviewed.
THE β-FUNCTIONS OF THE SU(2) LATTICE GAUGE THEORIES WITH SIN AND EXP ACTIONS
DONG Shao-jing, LI Wen-zhu
Chin. Phys. Lett. 1985, 2 (9): 393-396 .  
Abstract   PDF(pc) (44KB) ( 341 )
The β-functions of the SU(2) Lattice gauge theories with SIN and EXP actions are investigated by means of Monte Carlo renormalization group method (MCRG). Only one ultraviolet fixed point is observed. The finite size effect and the connection with the continuum limit are discussed.

THE EFFECT OF SODIUM ADLAYERS ON THE ADSORPTION OF OXYGEN ON Ag(100)
Eric GARFUNKEL, DING Xun-min, DONG Guo-sheng, YANG Shu, HOU Xiao-vuan. WANG Xun
Chin. Phys. Lett. 1985, 2 (9): 397-400 .  
Abstract   PDF(pc) (47KB) ( 424 )
The application of HREELS to the study of the Ag(100)/Na+O2 system reveals the presence of molecularly adsorbed oxygen species at room temperature. This may help explain why alkali metals can enhance the selectivity of an Ag catalyst towards the formation of C2H4O.
DEFECTS AND THEIR THERMAL ANNEALING BEHAVIOURS IN n- Si IMPLANTED WITH BORON AND PHOSPHORUS
CHEN Jian-xin, LI Ming-fu, LI Yan-jin
Chin. Phys. Lett. 1985, 2 (9): 401-404 .  
Abstract   PDF(pc) (54KB) ( 402 )
An up to date most detailed information of H(Hole) as well as E(Electron) traps produced by low dose (1011cm-2) boron and phosphorus implantation in n-Si and their thermal annealing behaviours are reported. For the first time, two hole traps H2(0.62), H3(0.49) of huge concentrations were detected in B+ implanted n-Si. They are tentatively assigned as boron related acceptors. H2(0.51) of huge concentration were detected in P+ implanted n-Si. Other three hole traps H1(0.63), H4( 0.37) and H5(0.15) were detected in both B+ and P+ implanted n-Si; they are thus unrelated to boron. E traps are also reported; some of these E traps are consistent with previous reports and some are new.

INTEGRATION OF THE CONTINUOUS HEISENBERG FERROMAGNET CHAIN WITH AN EASY AXIS THROUGH THE INVERSE SCATTERING METHOD
HUANG Nian-ning
Chin. Phys. Lett. 1985, 2 (9): 405-408 .  
Abstract   PDF(pc) (35KB) ( 339 )
The inverse scattering method is applied to the Heisenberg ferromagnet chain with an easy axis. The Gelfand-Levitan-Marchenko equation is found. From the equation the one-soliton solution is obtained as an example.
THE EXACT GROUND STATE OF A HAMILTONIAN LATTICE GAUGE THEORY
GUO Shuo-hong, LIU Jin-ming, CHEN Qi-zhou
Chin. Phys. Lett. 1985, 2 (9): 409-412 .  
Abstract   PDF(pc) (33KB) ( 388 )
A modified hamiltonian of lattice gauge theory including 2-plaquette, interaction has been studied. We have found the exact ground state of the theory.
SERS OF THE MOLECULES ADSORBED ON Cu SURFACE AT 4880Å EXCITATION
MO Yu-jun, LI Xiu-ying, ZHANG Pena-xiang
Chin. Phys. Lett. 1985, 2 (9): 413-416 .  
Abstract   PDF(pc) (44KB) ( 454 )
SERRS has been developed for observing a weak enhancement of SERS. A SERS from dye molecules 1555 adsorbed on Copper surface was observed at 4880Å excitation and this result could be qualitatively explained by the antenna model of SERS.

COLOR CENTERS IN LiNbO3 CRYSTALS
FENG Xi-qi, HE Xue-mei, SHE Wei-long
Chin. Phys. Lett. 1985, 2 (9): 417-420 .  
Abstract   PDF(pc) (48KB) ( 463 )
Color centers stable at room temperature with absorption bands peaking at 365m, 460nm, 540nm and 620nm were produced in LiNbO3 crystals by γ-radiation, Measurements with XPS (X-ray photoelectron energy spectroscopy) and ESR (electron spin resonance) techniques show that the concentration of Nb4+ ion is high in the reduced LiNbO3 crystal but no typical ten-line Nb4+ ESR spectrum appears. The experimental results can be explained by the Nb4+ ion-F+ center association model.

RAMAN SPECTRA OF LiYF4 CRYSTAL
GAN Fu-xi, CHEN Hai-yan
Chin. Phys. Lett. 1985, 2 (9): 421-424 .  
Abstract   PDF(pc) (41KB) ( 391 )
The polarized Raman spectra of lithium yttrium fluoride crystal for the incident light along different axes are presented and the vibrational modes of the crystal structure are discussed.
NEW ANOMALOUS PULSE OPTOGALVANIC SIGNALS
ZHANG Yan-ping, YIN Li-feng, HU Qi-ling, ZHANG Gui-yan, JIN Chun-yacg, LIN Fu-cheng
Chin. Phys. Lett. 1985, 2 (9): 425-428 .  
Abstract   PDF(pc) (54KB) ( 402 )
We report here some new anomalous pulse optogalvanic signals arising from transitions between different levels of metal atoms and suggest a possible mechanism to explain this phenomenon.
A RECURSION FORMULA FOR THE NUMBER OF STABLE ORBITS IN THE CUBIC MAP
ZENG Wan-zhen
Chin. Phys. Lett. 1985, 2 (9): 429-431 .  
Abstract   PDF(pc) (34KB) ( 342 )
A recursion formula for the number of stable cycles in the cubic map is given by analysing different types of bifurcations and investigating the stability of all periodic orbits.
12 articles