A very low temperature scanning tunneling microscope for the local spectroscopy of mesoscopic structures

被引：67

作者：

Moussy, N ^{[1
]}

Courtois, H ^{[1
]}

Pannetier, B ^{[1
]}

机构：

[1] Univ Grenoble 1, CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2001年 / 72卷 / 01期

关键词：

D O I：

10.1063/1.1331328

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present the design and operation of a very low temperature scanning tunneling microscope (STM) working at 60 mK in a dilution refrigerator. The STM features both atomic resolution and micron-sized scanning range at low temperature. We achieved an efficient thermalization of the sample while maintaining a clean surface for STM imaging. Our spectroscopic data show unprecedented energy resolution. We present current-voltage characteristics and the deduced local density of states of hybrid superconductor-normal metal systems. This work is the first experimental realization of a local spectroscopy of mesoscopic structures at very low temperature. (C) 2001 American Institute of Physics.

引用

页码：128 / 131

页数：4

共 16 条

[1] Studies of 2D cryocrystals by STM techniques [J].

Bauerle, C ;

Mori, N ;

Kurata, G ;

Fukuyama, H .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1998, 113 (5-6) :927-932

[2] Local density of states in a dirty normal metal connected to a superconductor [J].

Belzig, W ;

Bruder, C ;

Schon, G .

PHYSICAL REVIEW B, 1996, 54 (13) :9443-9448

[3] DIRECT MEASUREMENT OF QUASIPARTICLE-LIFETIME BROADENING IN A STRONG-COUPLED SUPERCONDUCTOR [J].

DYNES, RC ;

NARAYANAMURTI, V ;

GARNO, JP .

PHYSICAL REVIEW LETTERS, 1978, 41 (21) :1509-1512

[4] STM SPECTROSCOPY OF VORTEX CORES AND THE FLUX LATTICE [J].

HESS, HF ;

ROBINSON, RB ;

WASZCZAK, JV .

PHYSICA B-CONDENSED MATTER, 1991, 169 (1-4) :422-431

[5]

Imry Y., 1997, INTRO MESOSCOPIC PHY

[6] LOCAL TUNNELING SPECTROSCOPY OF A NB/INAS/NB SUPERCONDUCTING PROXIMITY SYSTEM WITH A SCANNING TUNNELING MICROSCOPE [J].

INOUE, K ;

TAKAYANAGI, H .

PHYSICAL REVIEW B, 1991, 43 (07) :6214-6215

[7] A 3He refrigerated scanning tunneling microscope in high magnetic fields and ultrahigh vacuum [J].

Kugler, M ;

Renner, C ;

Fischer, O ;

Mikheev, V ;

Batey, G .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2000, 71 (03) :1475-1478

[8] Spatially resolved tunneling spectroscopy of superconducting wires with artificial pinning centers [J].

Levi, Y ;

Millo, O ;

Rizzo, ND ;

Prober, DE ;

Motowidlo, LR .

APPLIED PHYSICS LETTERS, 1998, 72 (04) :480-482

[9]

Lindahl J, 1998, J VAC SCI TECHNOL B, V16, P3077, DOI 10.1116/1.590445

[10] THERMAL CONTRACTION OF ULTRAHIGH-VACUUM MATERIALS FOR SCANNING PROBE MICROSCOPY FROM 300 TO 4 K [J].

NUNES, G ;

WILLIAMS, D .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1995, 13 (03) :1063-1065

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