Transition from tunneling regime to local point contact realized on Ba0.6K0.4Fe2As2 surface<xref rid="cpb_26_6_067402fn1" ref-type="fn">*</xref><fn id="cpb_26_6_067402fn1"><label>*</label>Project supported by the National Natural Science Foundation of China (Grant Nos. 11574372 and 11322432) and the “Strategic Priority Research Program (B)” of the Chinese Academy of Sciences (Grant No. XDB07020300).</fn>

Transition from tunneling regime to local point contact realized on Ba_0.6K_0.4Fe₂As₂ surface**

Project supported by the National Natural Science Foundation of China (Grant Nos. 11574372 and 11322432) and the “Strategic Priority Research Program (B)” of the Chinese Academy of Sciences (Grant No. XDB07020300).

Hou Xingyuan^{1, 2}, Jie Yunyin^{1, 2}, Gong Jing^{1, 2}, Shen Bing², Zi Hai², Li Chunhong², Ren Cong², Shan Lei^{1, 2, 3, †}

(color online) (a) Spectra with varying from 0.2 G to 410 . (b) Fitting some normalized spectra to a modified two-gap BTK model. The gap function is the same as that used in Figs. 2. (c)–(f) Fitting parameters plotted as the function of , including larger gap and smaller gap in panel (c), spectral weight contributed from (P) in panel (d), broadening factor in panel (e), and effective barrier Z in panel (f). Dotted lines indicate the transition region. All data presented here were taken at T = 2.4 K.