Continuous doping of a cuprate surface: Insights from in situ angle-resolved photoemission

被引：18

作者：

Zhong, Y-G ^{[1
,2
,3
]}

Guan, J-Y ^{[1
,2
,3
]}

Shi, X. ^{[1
,2
,3
,10
,11
,12
]}

Zhao, J. ^{[1
,2
,3
]}

Rao, Z-C ^{[1
,2
,3
]}

Tang, C-Y ^{[1
,2
,3
]}

Liu, H-J ^{[1
,2
,3
]}

Weng, Z. Y. ^{[4
,5
]}

Wang, Z. Q. ^{[6
]}

Gu, G. D. ^{[7
]}

Qian, T. ^{[1
,2
,5
]}

Sun, Y-J ^{[1
,2
,8
,9
]}

Ding, H. ^{[1
,2
,3
,5
,8
]}

机构：

[1] Chinese Acad Sci, Betjing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Sch Phys, Beijing 100190, Peoples R China

[4] Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China

[5] Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China

[6] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA

[7] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[8] Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China

[9] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

[10] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[11] Univ Colorado, JILA, Boulder, CO 80309 USA

[12] NIST, Boulder, CO 80309 USA

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 14期

关键词：

FERMI-SURFACE; NORMAL-STATE; TEMPERATURE; PSEUDOGAP; BI2SR2CACU2O8+DELTA; PHYSICS; GAP; BI;

D O I：

10.1103/PhysRevB.98.140507

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a technique of a continuously doped surface of Bi2Sr2CaCu2O8+x, through ozone/vacuum annealing and a systematic measurement over the nearly whole superconducting dome on the same sample surface by in situ angle-resolved photoemission spectroscopy. We find that the quasiparticle weight on the antinode is proportional to the doped carrier concentration x within the entire superconducting dome, while the nodal quasiparticle weight changes more mildly. More significantly, we discover that a d-wave pairing energy gap extracted from the nodal region scales well with the onset temperature of the Nernst signal. These findings suggest that the emergence of superconducting pairing is concomitant with the onset of free vortices.

引用

页数：6

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