Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

被引：12

作者：

Borisenko, Sergey V. ^{[1
]}

Zabolotnyy, Volodymyr B. ^{[1
]}

Kordyuk, Alexander A. ^{[1
,2
]}

Evtushinsky, Danil V. ^{[1
]}

Kim, Timur K. ^{[1
,3
]}

Carleschi, Emanuela ^{[4
]}

Doyle, Bryan P. ^{[4
]}

Fittipaldi, Rosalba ^{[5
,6
]}

Cuoco, Mario ^{[5
,6
]}

Vecchione, Antonio ^{[5
,6
]}

Berger, Helmut ^{[7
]}

机构：

[1] IFW Dresden, Inst Solid State Res, Dresden, Germany

[2] Natl Acad Sci Ukraine, Inst Met Phys, Kiev, Ukraine

[3] Diamond Light Source LTD, Didcot, Oxon, England

[4] Univ Johannesburg, Dept Phys, Johannesburg, South Africa

[5] Univ Salerno, CNR, SPIN, Salerno, Italy

[6] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy

[7] Ecole Polytech Fed Lausanne, Inst Phys Complex Matter, CH-1015 Lausanne, Switzerland

来源：

JOVE-JOURNAL OF VISUALIZED EXPERIMENTS | 2012年 / 68期

关键词：

Physics; Issue; 68; Chemistry; electron energy bands; band structure of solids; superconducting materials; condensed matter physics; ARPES; angle-resolved photoemission synchrotron; imaging;

D O I：

10.3791/50129

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The physical properties of a material are defined by its electronic structure. Electrons in solids are characterized by energy (omega) and momentum (k) and the probability to find them in a particular state with given. and k is described by the spectral function A(k,omega). This function can be directly measured in an experiment based on the well-known photoelectric effect, for the explanation of which Albert Einstein received the Nobel Prize back in 1921. In the photoelectric effect the light shone on a surface ejects electrons from the material. According to Einstein, energy conservation allows one to determine the energy of an electron inside the sample, provided the energy of the light photon and kinetic energy of the outgoing photoelectron are known. Momentum conservation makes it also possible to estimate k relating it to the momentum of the photoelectron by measuring the angle at which the photoelectron left the surface. The modern version of this technique is called Angle-Resolved Photoemission Spectroscopy (ARPES) and exploits both conservation laws in order to determine the electronic structure, i.e. energy and momentum of electrons inside the solid. In order to resolve the details crucial for understanding the topical problems of condensed matter physics, three quantities need to be minimized: uncertainty(star) in photon energy, uncertainty in kinetic energy of photoelectrons and temperature of the sample. In our approach we combine three recent achievements in the field of synchrotron radiation, surface science and cryogenics. We use synchrotron radiation with tunable photon energy contributing an uncertainty of the order of 1 meV, an electron energy analyzer which detects the kinetic energies with a precision of the order of 1 meV and a He-3 cryostat which allows us to keep the temperature of the sample below 1 K. We discuss the exemplary results obtained on single crystals of Sr2RuO4 and some other materials. The electronic structure of this material can be determined with an unprecedented clarity.

引用

页数：8

共 11 条

[1] One-Sign Order Parameter in Iron Based Superconductor [J].

Borisenko, Sergey V. ;

Zabolotnyy, Volodymyr B. ;

Kordyuk, Alexnader A. ;

Evtushinsky, Danil V. ;

Kim, Timur K. ;

Morozov, Igor V. ;

Follath, Rolf ;

Buechner, Bernd .

SYMMETRY-BASEL, 2012, 4 (01) :251-264

[2]

HUFNER S, 1996, PHOTOELECTRON SPECTR

[3] Momentum and energy dependence of the anomalous high-energy dispersion in the electronic structure of high temperature superconductors [J].

Inosov, D. S. ;

Fink, J. ;

Kordyuk, A. A. ;

Borisenko, S. V. ;

Zabolotnyy, V. B. ;

Schuster, R. ;

Knupfer, M. ;

Buechner, B. ;

Follath, R. ;

Duerr, H. A. ;

Eberhardt, W. ;

Hinkov, V. ;

Keimer, B. ;

Berger, H. .

PHYSICAL REVIEW LETTERS, 2007, 99 (23)

[4] Excitation energy map of high-energy dispersion anomalies in cuprates [J].

Inosov, D. S. ;

Schuster, R. ;

Kordyuk, A. A. ;

Fink, J. ;

Borisenko, S. V. ;

Zabolotnyy, V. B. ;

Evtushinsky, D. V. ;

Knupfer, M. ;

Buechner, B. ;

Follath, R. ;

Berger, H. .

PHYSICAL REVIEW B, 2008, 77 (21)

[5] Origin of the peak-dip-hump line shape in the superconducting-state (π,0) photoemission spectra of Bi2Sr2CaCu2O8 -: art. no. 077003 [J].

Kordyuk, AA ;

Borisenko, SV ;

Kim, TK ;

Nenkov, KA ;

Knupfer, M ;

Fink, J ;

Golden, MS ;

Berger, H ;

Follath, R .

PHYSICAL REVIEW LETTERS, 2002, 89 (07) :1-077003

[6] SUPERCONDUCTIVITY IN A LAYERED PEROVSKITE WITHOUT COPPER [J].

MAENO, Y ;

HASHIMOTO, H ;

YOSHIDA, K ;

NISHIZAKI, S ;

FUJITA, T ;

BEDNORZ, JG ;

LICHTENBERG, F .

NATURE, 1994, 372 (6506) :532-534

[7] RELATIONSHIP OF SR2RUO4 TO THE SUPERCONDUCTING LAYERED CUPRATES [J].

SINGH, DJ .

PHYSICAL REVIEW B, 1995, 52 (02) :1358-1361

[8] Crystal structure and calculated electronic band structure of ZrTe3 [J].

Stowe, K ;

Wagner, FR .

JOURNAL OF SOLID STATE CHEMISTRY, 1998, 138 (01) :160-168

[9] Momentum and temperature dependence of renormalization effects in the high-temperature superconductor YBa2Cu3O7-δ [J].

Zabolotnyy, V. B. ;

Borisenko, S. V. ;

Kordyuk, A. A. ;

Geck, J. ;

Inosov, D. S. ;

Koitzsch, A. ;

Fink, J. ;

Knupfer, M. ;

Buechner, B. ;

Drechsler, S. -L. ;

Berger, H. ;

Erb, A. ;

Lambacher, M. ;

Patthey, L. ;

Hinkov, V. ;

Keimer, B. .

PHYSICAL REVIEW B, 2007, 76 (06)

[10] Surface and bulk electronic structure of the unconventional superconductor Sr2RuO4: unusual splitting of the β band [J].

Zabolotnyy, V. B. ;

Carleschi, E. ;

Kim, T. K. ;

Kordyuk, A. A. ;

Trinckauf, J. ;

Geck, J. ;

Evtushinsky, D. ;

Doyle, B. P. ;

Fittipaldi, R. ;

Cuoco, M. ;

Vecchione, A. ;

Buechner, B. ;

Borisenko, S. V. .

NEW JOURNAL OF PHYSICS, 2012, 14

← 1 2 →